Ventilator Management in CVICU Patients

General Ventilation Principles

The American Thoracic Society recommends using standard full-featured ventilators rather than basic flow generators or resuscitation devices for optimal control and monitoring in CVICU patients 2, 3
The Society of Critical Care Medicine suggests implementing lung-protective ventilation strategies to prevent ventilator-induced lung injury, with a strength of evidence rated as high 2, 3
Monitoring pressure-time and flow-time scalars is recommended to optimize ventilator synchrony, with a moderate level of evidence 4
Regular measurement of peak inspiratory pressure, plateau pressure, mean airway pressure, and PEEP is advised, with a high level of evidence 4
Consider measuring transpulmonary pressure and dynamic compliance in complex cases, with a low level of evidence 4

The American College of Chest Physicians recommends a tidal volume of 4-8 mL/kg predicted body weight, with a high level of evidence 1, 2
Plateau pressure should be maintained <30 cmH2O, with a moderate level of evidence 1, 2
PEEP should be started at ≥5 cmH2O and titrated higher (≥10 cmH2O) for moderate-severe ARDS, with a high level of evidence 1, 4
Respiratory rate should be adjusted to maintain pH >7.20, with a moderate level of evidence 4
SpO2 targets should be 92-97%, with a high level of evidence 1, 4
PaO2 targets should be >55 mmHg, with a low level of evidence 5
PaCO2 targets should be 35-45 mmHg for healthy lungs, with a moderate level of evidence 4
pH targets should be >7.20, with a high level of evidence 1, 4

Post-ECPR patients should use low ventilatory pressure and respiratory rate with PEEP >10 cmH2O, with a high level of evidence 1
Avoid rapid PaCO2 changes, with a high level of evidence 1
LV distension prevention is crucial, with a moderate level of evidence 1
Harlequin syndrome prevention is important, with a low level of evidence 1

Prone positioning is recommended for ARDS patients, with a high level of evidence 6, 5
Complete (180°) prone positioning is preferred, with a moderate level of evidence 6, 5
PEEP strategy should target SpO2 92-97% when PEEP <10 cmH2O and 88-92% when PEEP ≥10 cmH2O, with a high level of evidence 4
Consider ECMO for refractory hypoxemia, with a low level of evidence 5

Regular assessment of arterial blood gases, lactate, and central venous saturation is recommended, with a high level of evidence 4
End-tidal CO2 monitoring is advised, with a moderate level of evidence 4
SpO2 monitoring is crucial, with a high level of evidence 4
Pressure monitoring is essential, with a moderate level of evidence 4
Daily weaning assessment is recommended, with a high level of evidence 4

Early weaning is recommended, with a high level of evidence 4
Daily assessment of extubation readiness is advised, with a moderate level of evidence 4
Consider NIV post-extubation, with a low level of evidence 4
Cuff pressure should be maintained ≤20 cmH2O, with a moderate level of evidence 4

Excessive tidal volumes should be avoided, with a high level of evidence 1
Inadequate PEEP can lead to atelectasis, with a moderate level of evidence 4
Hyperoxia is associated with increased mortality, with a high level of evidence 1
Rapid PaCO2 changes can lead to cerebral injury, with a high level of evidence 1
Ventilator asynchrony can increase work of breathing, with a low level of evidence 4
Delayed prone positioning can worsen outcomes, with a moderate level of evidence 5