Patients on pressure support ventilation were prospectively included when fluid challenges were clinically indicated.
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: The study patients were (1) intubated, mechanically ventilated on pressure support ventilation, (2) in acute circulatory failure. Acute circulatory failure was defined as (1) a systolic blood pressure lesser than 90mmHg (or mean arterial pressure lesser than 65mmHg) or the need for vasopressive drugs, (2) a urine output below 0.5ml/kg/hr for at least 2 hours, (3) tachycardia (heart rate >100bpm), (4) the presence of skin mottling
Exclusion criteria
Exclusion criteria: Patients with elevated intracranial hypertension, abdominal compartment syndrome, pulmonary embolism, pulmonary hypertension, severe acute respiratory distress syndrome (ARDS), positive end expiratory pressure (PEEP) higher than 10cmH2O, severe left ventricular dysfunction (ejection fraction lesser than 30%), irregular heart rhythm, occlusion of IJVs or SCVs or IVC was excluded
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| To evaluate utility of collapsibility of internal jugular veins (IJVs) and subclavian veins (SCVs) in comparison with collapsibility of IVC to predict fluid responsiveness on pressure support ventilation. Fluid responsiveness was defined as 8% increase of stroke volume calculated with arterial pulse contour analysis after passive leg raising (PLR). | — |
Countries
Japan
Contacts
Shonan Kamakura General Hospital Critical Care