The goal of this observational study is to learn about the feasibility of hemodynamic measurement by the UltraSonic Cardiac Output Monitor (USCOM) in very preterm or very-low-birth-weight infants. The main questions it aims to answer are: 1) establishing reference ranges for USCOM parameters in this specific population, 2) assessing the effect of patients' characteristics and other possible confounders on USCOM parameters, and 3) evaluating the short-term repeatability of the measurement. Participants will receive USCOM measurements on 3, 7, and 14 postnatal days.
Study Type
OBSERVATIONAL
Enrollment
80
We will measure cardiac output, cardiac index, and systemic vascular resistance index on 3, 7, and 14 postnatal days using the UltraSonic Cardiac Output Monitor.
Fondazione IRCCS San Gerardo dei Tintori
Monza, Monza E Brianza, Italy
RECRUITINGCardiac Output at 3 days
Cardiac Output measured by the USCOM system, normalized by body weight and expressed in ml/kg/min
Time frame: 3 ± 1 days of life
Cardiac Output at 7 days
Cardiac Output measured by the USCOM system, normalized by body weight and expressed in ml/kg/min
Time frame: 7 ± 2 days of life
Cardiac Output at 14 days
Cardiac Output measured by the USCOM system, normalized by body weight and expressed in ml/kg/min
Time frame: 14 ± 2 days of life
Cardiac Index at 3 days
Cardiac Output measured by the USCOM system normalized by body surface and expressed in L/min/m2
Time frame: 3 ± 1 days of life
Cardiac Index at 7 days
Cardiac Output measured by the USCOM system normalized by body surface and expressed in L/min/m2
Time frame: 7 ± 2 days of life
Cardiac Index at 14 days
Cardiac Output measured by the USCOM system normalized by body surface and expressed in L/min/m2
Time frame: 14 ± 2 days of life
Systemic Vascular Resistance Index at 3 days
Systemic Vascular Resistance measured by the USCOM system normalized by body surface and expressed in d\*s\*cm-5/m2
Time frame: 3 ± 1 days of life
Systemic Vascular Resistance Index at 7 days
Systemic Vascular Resistance measured by the USCOM system normalized by body surface and expressed in d\*s\*cm-5/m2
Time frame: 7 ± 2 days of life
Systemic Vascular Resistance Index at 14 days
Systemic Vascular Resistance measured by the USCOM system normalized by body surface and expressed in d\*s\*cm-5/m2
Time frame: 14 ± 2 days of life
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