Patients who met the inclusion criteria were included and signed an informed consent form, which complied with the requirements of the ethics committee of our unit. All subjects were inpatients. Subjects were randomized into two groups. patients in group A were first treated with HFNC on top of conventional treatment, and after 24 hours, patients were treated with non-invasive ventilator-assisted ventilation BiPAP mode until discharge. patients in group B were treated with a non-invasive ventilator on top of conventional treatment, and after 24 hours of treatment, patients were treated with HFNC until discharge. Patient information was collected during treatment.
Patients who met the inclusion criteria were included and signed the informed consent, which met the requirements of the ethics committee of our unit. All subjects were hospitalized patients. Subjects were randomly divided into two groups. Patients in group A were treated with HFNC on the basis of conventional treatment. The initial parameters were: temperature:31-37℃, flow: 30-40l /min, SpO2 \> 92% maintained, the oxygen concentration was adjusted according to the patient's oxygen saturation, and the treatment time was 24h. Twenty-four hours later, the patients were treated with non-invasive ventilator-assisted ventilation BiPAP mode until discharge. On the basis of conventional treatment, patients in group B were given a non-invasive ventilator with the following initial parameters: BiPaP mode, initial inspiratory pressure (IPAP) of 8-15cmH2O, initial expiratory pressure (EPAP) of 4-8cmH2O. The parameters were adjusted according to the specific conditions of the patients. After 24 hours of treatment, the patient was treated with HFNC until discharge. Patient information was collected during treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
243
Patients were first treated with HFNC (High-flow nasal cannula) on the basis of conventional treatment. The initial parameters were temperature: 31-37 °C, flow rate: 30-40l /min, maintaining SpO2\>92%, adjusting oxygen concentration according to blood oxygen saturation, and treatment duration was 24 h. After 24 h, patients were treated with non-invasive ventilator-assisted ventilation BiPAP mode until discharge.
On the basis of conventional treatment, patients were first administered a noninvasive ventilator with the following initial parameters. BiPAP mode with an initial inspiratory pressure (IPAP) of 8-15 cmH2O and an initial expiratory pressure (EPAP) of 4-8 cmH2O. These parameters were adjusted according to the patient's specific conditions. After 24 hours of treatment, patients received HFNC (High-flow nasal cannula) until discharge.
Qilu Hospital of Shandong University
Jinan, Shandong, China
HR
Heart rate
Time frame: At the time of enrollment in the clinical study
HR
Heart rate
Time frame: On the first hour after enrollment
HR
Heart rate
Time frame: On the second hour after enrollment
HR
Heart rate
Time frame: On the 6th hour after enrollment
HR
Heart rate
Time frame: On the 12th hour after enrollment
HR
Heart rate
Time frame: On the 24th hour after enrollment
HR
Heart rate
Time frame: On the 25th hour after enrollment (On the first hour after crossover)
HR
Heart rate
Time frame: On the 26th hour after enrollment (On the second hour after crossover)
HR
Heart rate
Time frame: On the 30th hour after enrollment (On the 6th hour after crossover)
HR
Heart rate
Time frame: On the 36th hour after enrollment (On the 12th hour after crossover)
HR
Heart rate
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
HR
Heart rate
Time frame: On the third day after enrollment (On the 48th hour after crossover)
HR
Heart rate
Time frame: On the 4th day after enrollment (On the third day after crossover)
HR
Heart rate
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
HR
Heart rate
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
HR
Heart rate
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
HR
Heart rate
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
HR
Heart rate
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
RR
Respiratory rate
Time frame: At the time of enrollment in the clinical study
RR
Respiratory rate
Time frame: On the first hour after enrollment
RR
Respiratory rate
Time frame: On the second hour after enrollment
RR
Respiratory rate
Time frame: On the 6th hour after enrollment
RR
Respiratory rate
Time frame: On the 12th hour after enrollment
RR
Respiratory rate
Time frame: On the 24th hour after enrollment
RR
Respiratory rate
Time frame: On the 25th hour after enrollment (On the first hour after crossover)
RR
Respiratory rate
Time frame: On the 26th hour after enrollment (On the second hour after crossover)
RR
Respiratory rate
Time frame: On the 30th hour after enrollment (On the 6th hour after crossover)
RR
Respiratory rate
Time frame: On the 36th hour after enrollment (On the 12th hour after crossover)
RR
Respiratory rate
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
RR
Respiratory rate
Time frame: On the third day after enrollment (On the 48th hour after crossover)
RR
Respiratory rate
Time frame: On the 4th day after enrollment (On the third day after crossover)
RR
Respiratory rate
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
RR
Respiratory rate
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
RR
Respiratory rate
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
RR
Respiratory rate
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
RR
Respiratory rate
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: At the time of enrollment in the clinical study
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the first hour after enrollment
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the second hour after enrollment
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 6th hour after enrollment
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 12th hour after enrollment
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 24th hour after enrollment
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 25th hour after enrollment (On the first hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 26th hour after enrollment (On the second hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 30th hour after enrollment (On the 6th hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 36th hour after enrollment (On the 12th hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the third day after enrollment (On the 48th hour after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 4th day after enrollment (On the third day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
BP
Blood pressure (Includes systolic and diastolic blood pressure)
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
SO2
Pulse oxygen saturation
Time frame: At the time of enrollment in the clinical study
SO2
Pulse oxygen saturation
Time frame: On the first hour after enrollment
SO2
Pulse oxygen saturation
Time frame: On the second hour after enrollment
SO2
Pulse oxygen saturation
Time frame: On the 6th hour after enrollment
SO2
Pulse oxygen saturation
Time frame: On the 12th hour after enrollment
SO2
Pulse oxygen saturation
Time frame: On the 24th hour after enrollment
SO2
Pulse oxygen saturation
Time frame: On the 25th hour after enrollment (On the first hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 26th hour after enrollment (On the second hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 30th hour after enrollment (On the 6th hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 36th hour after enrollment (On the 12th hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the third day after enrollment (On the 48th hour after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 4th day after enrollment (On the third day after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
SO2
Pulse oxygen saturation
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
pH
Degree of pH in arterial blood
Time frame: At the time of enrollment in the clinical study
pH
Degree of pH in arterial blood
Time frame: On the 24th hour after enrollment
pH
Degree of pH in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
pH
Degree of pH in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 4th day after enrollment (On the 3th day after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
pH
Degree of pH in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: At the time of enrollment in the clinical study
PaO2
Partial arterial oxygen pressure
Time frame: On the 24th hour after enrollment
PaO2
Partial arterial oxygen pressure
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the third day after enrollment (On the 48th hour after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 4th day after enrollment (On the 3th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
PaO2
Partial arterial oxygen pressure
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
SaO2
Arterial oxygen saturation
Time frame: At the time of enrollment in the clinical study
SaO2
Arterial oxygen saturation
Time frame: On the 24th hour after enrollment
SaO2
Arterial oxygen saturation
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the third day after enrollment (On the 48th hour after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 4th day after enrollment (On the third day after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
SaO2
Arterial oxygen saturation
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: At the time of enrollment in the clinical study
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 24th hour after enrollment
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
PCO2
partial pressure of carbon dioxide in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
FiO2
Fraction of inspiration O2
Time frame: At the time of enrollment in the clinical study
FiO2
Fraction of inspiration O2
Time frame: On the 24th hour after enrollment
FiO2
Fraction of inspiration O2
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the third day after enrollment (On the 48th hour after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 4th day after enrollment (On the third day after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
FiO2
Fraction of inspiration O2
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Lac
Lactic acid in arterial blood
Time frame: At the time of enrollment in the clinical study
Lac
Lactic acid in arterial blood
Time frame: On the 24th hour after enrollment
Lac
Lactic acid in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Lac
Lactic acid in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: At the time of enrollment in the clinical study
Glu
Arterial blood glucose in arterial blood
Time frame: On the 24th hour after enrollment
Glu
Arterial blood glucose in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
GLu
Arterial blood glucose in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Glu
Arterial blood glucose in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: At the time of enrollment in the clinical study
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 24th hour after enrollment
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
A-aDO2
The difference between the oxygen partial pressure of alveolar air and the oxygen partial pressure of arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
BE
Base excess in arterial blood
Time frame: At the time of enrollment in the clinical study
BE
Base excess in arterial blood
Time frame: On the 24th hour after enrollment
BE
Base excess in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
BE
Base excess in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
BE
Base excess in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
BE
Base excess in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
BE
Base excess in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
BE
Base excess in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
BE
Base excess in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
BE
Base excess in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
RI
Respiratory Index
Time frame: At the time of enrollment in the clinical study
RI
Respiratory Index
Time frame: On the 24th hour after enrollment
RI
Respiratory Index
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
RI
Respiratory Index
Time frame: On the third day after enrollment (On the 48th hour after crossover)
RI
Respiratory Index
Time frame: On the 4th day after enrollment (On the third day after crossover)
RI
Respiratory Index
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
RI
Respiratory Index
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
RI
Respiratory Index
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
RI
Respiratory Index
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
RI
Respiratory Index
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: At the time of enrollment in the clinical study
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 24th hour after enrollment
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the third day after enrollment (On the 48th hour after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 4th day after enrollment (On the third day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Arterial blood HCO3- concentration
Arterial blood HCO3- concentration,including arterial blood HCO3- std concentration
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: At the time of enrollment in the clinical study
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 24th hour after enrollment
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the third day after enrollment (On the 48th hour after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 4th day after enrollment (On the third day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Arterial blood K+ concentration
Arterial blood K+ concentration
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: At the time of enrollment in the clinical study
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 24th hour after enrollment
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the third day after enrollment (On the 48th hour after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 4th day after enrollment (On the third day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Arterial blood Ca2+ concentration
Arterial blood Ca2+ concentration
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: At the time of enrollment in the clinical study
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 24th hour after enrollment
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the third day after enrollment (On the 48th hour after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 4th day after enrollment (On the third day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
Arterial blood Na+ concentration
Arterial blood Na+ concentration
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: At the time of enrollment in the clinical study
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 24th hour after enrollment
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
TCO2
Total carbon dioxide in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
HCT
hematocrit in arterial blood
Time frame: At the time of enrollment in the clinical study
HCT
hematocrit in arterial blood
Time frame: On the 24th hour after enrollment
HCT
hematocrit in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
HCT
hematocrit in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
HCT
hematocrit in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: At the time of enrollment in the clinical study
tHbc
Total hemoglobin in arterial blood
Time frame: On the 24th hour after enrollment
tHbc
Total hemoglobin in arterial blood
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the third day after enrollment (On the 48th hour after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 4th day after enrollment (On the third day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 5th day after enrollment (On the 4th day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 6th day after enrollment (On the 5th day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 7th day after enrollment (On the 6th day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 8th day after enrollment (On the 7th day after crossover)
tHbc
Total hemoglobin in arterial blood
Time frame: On the 9th day after enrollment (On the 8th day after crossover)
height
m
Time frame: At the time of enrollment in the clinical study
Weight
Kg
Time frame: At the time of enrollment in the clinical study
gender
Male and female
Time frame: At the time of enrollment in the clinical study
age
year
Time frame: At the time of enrollment in the clinical study
WBC
The number of white blood cells in venous blood
Time frame: On the first day after enrollment
WBC
The number of white blood cells in venous blood
Time frame: up to 9 days
NEU
The number of Neutrophil granulocyte in venous blood
Time frame: On the first day after enrollment
NEU
The number of Neutrophil granulocyte in venous blood
Time frame: up to 9 days
LYM
The number of Venous blood lymphocytes in venous blood
Time frame: On the first day after enrollment
LYM
The number of Venous blood lymphocytes in venous blood
Time frame: up to 9 days
EOS
The number of Venous blood eosinophils in venous blood
Time frame: On the first day after enrollment
EOS
The number of Venous blood eosinophils in venous blood
Time frame: up to 9 days
BAS
The number of Venous blood Basophils in venous blood
Time frame: On the first day after enrollment
BAS
The number of Venous blood Basophils in venous blood
Time frame: up to 9 days
MON
The number of Venous blood Monocyte cell in venous blood
Time frame: On the first day after enrollment
MON
The number of Venous blood Monocyte cell in venous blood
Time frame: up to 9 days
RBC
The number of red blood cells in venous blood
Time frame: On the first day after enrollment
RBC
The number of red blood cells in venous blood
Time frame: up to 9 days
HGB
The number of haemoglobin in venous blood
Time frame: On the first day after enrollment
HGB
The number of haemoglobin in venous blood
Time frame: up to 9 days
HCT
hematocrit in venous blood
Time frame: On the first day after enrollment
HCT
hematocrit in venous blood
Time frame: up to 9 days
MCV
Mean Corpuscular Volume in venous blood
Time frame: On the first day after enrollment
MCV
Mean Corpuscular Volume in venous blood
Time frame: up to 9 days
MCH
Mean Corpuscular Haemoglobin Concentration in venous blood
Time frame: On the first day after enrollment
MCH
Mean Corpuscular Haemoglobin Concentration in venous blood
Time frame: up to 9 days
RDW
red blood cell distribution width in venous blood
Time frame: On the first day after enrollment
RDW
red blood cell distribution width in venous blood
Time frame: up to 9 days
PLT
platelet in venous blood
Time frame: On the first day after enrollment
PLT
platelet in venous blood
Time frame: up to 9 days
PDW
Platelet distributionwidth in venous blood
Time frame: On the first day after enrollment
PDW
Platelet distributionwidth in venous blood
Time frame: up to 9 days
MPV
Mean Platelet Volume in venous blood
Time frame: On the first day after enrollment
MPV
Mean Platelet Volume in venous blood
Time frame: up to 9 days
plateletcrit
plateletcrit in venous blood
Time frame: On the first day after enrollment
plateletcrit
plateletcrit in venous blood
Time frame: up to 9 days
CRP
C-reactive protein in venous blood
Time frame: On the first day after enrollment
CRP
C-reactive protein in venous blood
Time frame: up to 9 days
PCT
Procalcitonin in venous blood
Time frame: On the first day after enrollment
PCT
Procalcitonin in venous blood
Time frame: up to 9 days
NT-proBNP
NT-proBNP in venous blood
Time frame: On the first day after enrollment
NT-proBNP
NT-proBNP in venous blood
Time frame: up to 9 days
ESR
erythrocytesedimentationrate in venous blood
Time frame: On the first day after enrollment
ESR
erythrocytesedimentationrate in venous blood
Time frame: up to 9 days
PT
prothrombin time in venous blood
Time frame: On the first day after enrollment
PT
prothrombin time in venous blood
Time frame: up to 9 days
APTT
activated partial thromboplastin time in venous blood
Time frame: On the first day after enrollment
APTT
activated partial thromboplastin time in venous blood
Time frame: up to 9 days
TT
Thrombin time in venous blood
Time frame: On the first day after enrollment
TT
Thrombin time in venous blood
Time frame: up to 9 days
D-Di
D-Dimer in venous blood
Time frame: On the first day after enrollment
D-Di
D-Dimer in venous blood
Time frame: up to 9 days
ALT
alanine transaminase in venous blood
Time frame: On the first day after enrollment
ALT
alanine transaminase in venous blood
Time frame: up to 9 days
AST
Aspartate Transaminase in venous blood
Time frame: On the first day after enrollment
AST
Aspartate Transaminase in venous blood
Time frame: up to 9 days
PA
Serum prealbumin in venous blood
Time frame: On the first day after enrollment
PA
Serum prealbumin in venous blood
Time frame: up to 9 days
TP
Total serum protein in venous blood
Time frame: On the first day after enrollment
TP
Total serum protein in venous blood
Time frame: up to 9 days
ALB
Albumin protein in venous blood
Time frame: On the first day after enrollment
ALB
Albumin protein in venous blood
Time frame: up to 9 days
GLB
Globulin globulin in venous blood
Time frame: On the first day after enrollment
GLB
Globulin globulin in venous blood
Time frame: up to 9 days
Cr
creatinine in venous blood
Time frame: On the first day after enrollment
Cr
creatinine in venous blood
Time frame: up to 9 days
BUN
Urea nitrogen in venous blood
Time frame: On the first day after enrollment
BUN
Urea nitrogen in venous blood
Time frame: up to 9 days
Cys-C
Cystatin C in venous blood
Time frame: On the first day after enrollment
Cys-C
Cystatin C in venous blood
Time frame: up to 9 days
eGFR
Estimate glomerular filtration rate in venous blood
Time frame: On the first day after enrollment
eGFR
Estimate glomerular filtration rate in venous blood
Time frame: up to 9 days
Respiratory support time
Daily respiratory support time after patients were enrolled in the clinical study,h/Day
Time frame: during hospitalization, approximately 9 days
Relief time for dyspnea
Remission time of dyspnea after intervention
Time frame: during hospitalization, approximately 9 days
Tracheal intubation
Yes or No
Time frame: during hospitalization, approximately 9 days
Stay in the ICU
Yes or No
Time frame: during hospitalization, approximately 9 days
Complications
Facial injury, flatulence,Gastroesophageal reflux,Dry throat, sore throat,pneumothorax,Eye irritation discomfort,Low blood pressure.
Time frame: during hospitalization, approximately 9 days
Outcome of disease
Get better, get worse, die
Time frame: during hospitalization, approximately 9 days
Total bilirubin
Serum total bilirubin in venous blood
Time frame: On the first day after enrollment
Total bilirubin
Serum total bilirubin in venous blood
Time frame: up to 9 days
DBIL
Direct bilirubin in venous blood
Time frame: On the first day after enrollment
DBIL
Direct bilirubin in venous blood
Time frame: up to 9 days
IBIL
Indirect bilirubin in venous blood
Time frame: On the first day after enrollment
IBIL
Indirect bilirubin in venous blood
Time frame: up to 9 days
Diaphragm mobility
The patient is lying in a flat position. The convex array probe is placed at the junction of the anterior axillary line, midclavicular line, and rib margin (bilaterally), with the probe mark facing outward and downward for measurement.
Time frame: At the time of enrollment in the clinical study
Diaphragm mobility
The patient is lying in a flat position. The convex array probe is placed at the junction of the anterior axillary line, midclavicular line, and rib margin (bilaterally), with the probe mark facing outward and downward for measurement.
Time frame: On the 24th hour after enrollment
Diaphragm mobility
The patient is lying in a flat position. The convex array probe is placed at the junction of the anterior axillary line, midclavicular line, and rib margin (bilaterally), with the probe mark facing outward and downward for measurement.
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Diaphragm mobility
The patient is lying in a flat position. The convex array probe is placed at the junction of the anterior axillary line, midclavicular line, and rib margin (bilaterally), with the probe mark facing outward and downward for measurement.
Time frame: up to 9 days
Diaphragm thickness
Includes end-inspiratory diaphragm thickness and end-expiratory diaphragm thickness;The patient is lying flat on the bed. A linear array probe is placed in the mid-axillary line or between the anterior and mid-axillary lines between the eighth and tenth ribs, and measurements are taken.
Time frame: At the time of enrollment in the clinical study
Diaphragm thickness
Includes end-inspiratory diaphragm thickness and end-expiratory diaphragm thickness;The patient is lying flat on the bed. A linear array probe is placed in the mid-axillary line or between the anterior and mid-axillary lines between the eighth and tenth ribs, and measurements are taken.
Time frame: On the 24th hour after enrollment
Diaphragm thickness
Includes end-inspiratory diaphragm thickness and end-expiratory diaphragm thickness;The patient is lying flat on the bed. A linear array probe is placed in the mid-axillary line or between the anterior and mid-axillary lines between the eighth and tenth ribs, and measurements are taken.
Time frame: On the 48th hour after enrollment (On the 24th hour after crossover)
Diaphragm thickness
Includes end-inspiratory diaphragm thickness and end-expiratory diaphragm thickness;The patient is lying flat on the bed. A linear array probe is placed in the mid-axillary line or between the anterior and mid-axillary lines between the eighth and tenth ribs, and measurements are taken.
Time frame: up to 9 days
Patient compliance to the treatment
Patients were managed for compliance with the treatment.Dependent judgment 1. Complete dependence: patients actively cooperate with medical staff in treatment 2. Partial dependence: in most cases, patients can cooperate with the treatment, and in a few cases, patients resist the treatment but receive treatment after being enlightened by the medical staff. 3. Non-dependence: patients have strong resistance and resistance, so that they are unable to use ventilators or nasal high-flow humidification instruments.
Time frame: during hospitalization, approximately 9 days
Kolcaba Comfort Scale (GCQ) assessment assesses patient comfort
Kolcaba's General Comfort Questionnaire (GCQ) is composed of 28 items from 4 dimensions: physiological, psychological, spiritual, socio-cultural and environmental. The modification Scale adopts 1 to 4Likert Scale, with 1 indicating strongly disagree and 4 indicating strongly agree. In the negative question, 1 means strongly agree and 4 means strongly disagree. A higher score indicates more comfort.
Time frame: during hospitalization, approximately 9 days
Dyspnea rating scale
According to the degree of dyspnea and symptoms of the patient, the lowest score is 0, the highest score is 10.
Time frame: during hospitalization, approximately 9 days
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