Table 2. Gas Exchange and Systemic Hemodynamic Variables
Values are mean ± SD.
* Tested on a randomized basis.
†P < 0.05,
‡P < 0.01,
§P < 0.001 compared with airway pressure release ventilation (APRV) with spontaneous breathing.
∥P < 0.05,
#P < 0.01 compared with APRV without spontaneous breathing, high tidal volume (Vt).
CO = cardiac output; Ḋo2= oxygen delivery; Fio2= fraction of inspired oxygen; HR = heart rate; ITBV = intrathoracic blood volume; MAP = mean arterial pressure; MPAP = mean pulmonary arterial pressure; Paco2= arterial carbon dioxide tension; Pao2= arterial oxygen tension; PAOP = pulmonary artery occlusion pressure; Sao2= arterial oxygen saturation; SV = stroke volume.