We conducted an observation sub-study of the prospective randomized controlled trial "High Dose Inhaled Nitric Oxide in Acute Hypoxemic Respiratory Failure", in which we analysed the echocardiographic data collected both at baseline when patients where included and 3-5 days later for followup.
We conducted an observation sub-study of the prospective randomized controlled trial "High Dose Inhaled Nitric Oxide in Acute Hypoxemic Respiratory Failure" which was conducted in 2020/2021 during the COVID-19 pandemic on patients with ARDS due to COVID and requiring mechanical ventialtion. Patients underwent echocardiography at baseline, and were then randomized either to control, or treatment with inhaled nitric oxide, starting at 80ppm and then 40ppm. Followup echocardiography was performed 3-5 days later, and all echocardiographies were conducted by highly experienced sonographeres certified by the European Association of Cardiovascular Imaging. Analysis of these cardiac ultrasounds focused on the amount of patients showing signs of pulmonary hypertension, right ventricular failure and left ventricular failure. Several parameters were used to estimate these, and we also aimed to evalute the utility of more novel measures such as RV and LV GLS for this use in the ICU.
Study Type
OBSERVATIONAL
Enrollment
39
Danderyds Hospital
Stockholm, Sweden
Delta MPAP
Difference in MPAP, measured at baseline and at followup
Time frame: 3-5 days
Delta RV GLS
Difference in RV GLS, measured at baseline and at followup
Time frame: 3-5 days
Delta TAPSE
Difference in TAPSE, measured at baseline and at followup
Time frame: 3-5 days
Delta EF
Difference in EF, measured at baseline and at followup
Time frame: 3-5 days
Delta CI
Difference in CI, measured at baseline and at followup
Time frame: 3-5 days
Delta LV GLS
Difference in LV GLS, measured at baseline and at followup
Time frame: 3-5 days
Rates of LV failure detected by LV GLS compared to EF
Comparison of the amount of patients with LV failure for LV GLS and for EF, presented at both timepoints
Time frame: Presented both at baseline and followup
Rates of RV failure detected by RV GLS compared to TAPSE
Comparison of the amount of patients with RV failure for RV GLS and for TAPSE, presented at both timepoints
Time frame: Presented both at baseline and followup
Associations between levels of pulmonary hypertension, PEEP, peak pressures, central venous pressures and measurements
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Regression analysis will be performed to check for association between these potential confounders
Time frame: 3-5 days