Pressure-Controlled and Volume-Cycled Mechanical Ventilation

Comparison of volume-controlled and pressure-controlled ventilation in steep Trendelenburg position for robot-assisted laparoscopic radical prostatectomy

“…However, given the many possible factors such as degree of Trendelenburg tilt, the cross-over study design may have affected the results. Volume-controlled ventilation delivers a constant flow during the entire inspiration, and initially manifests as a rapid increase in proximal airway pressure [17]. High proximal airway pressure is incompletely transmitted to the alveoli during inspiration in the VCV of the normal lung; it usually reflects the resistance of the tracheal tube, inspiratory flow, and respiratory mechanics of the lung, rather than peak alveolar pressure [18].…”

Positive end-expiratory pressure in pressure-controlled ventilation improves ventilatory and oxygenation parameters during laparoscopic cholecystectomy

“…Since the main disadvantage of PCV is the variability of V T delivery, Ppeak was reset after pneumoperitoneum in this study [12]. If Ppeak had not been reset, a smaller V T might have resulted due to the decrease in compliance during pneumoperitoneum, which may lead to intraoperative atelectasis [13].…”

Pressure and volume controlled mechanical ventilation in anaesthetized pregnant sheep

“…19 A decelerating flow pattern (as is generated in PCV mode) is met with less flow resistance than the constant flow pattern of VCV, meaning that less airway pressure is generated and PIP is lower; however the decelerating pattern does tend to lead to higher mean airway pressures. 20 Unfortunately in our study we had no facility for measuring the mean airway pressure, so it is possible that despite generating a higher PIP, VCV may have produced equal or lower mean airway pressures. Different inspiratory flow waveforms may account for the differences in arterial pressure found between the VCV and PCV groups in our study.…”