Differential Effects of Endotracheal Suctioning on Gas Exchanges in Patients with Acute Respiratory Failure under Pressure-Controlled and Volume-Controlled Ventilation

Table 2

Changes in heart rate (HR) and mean arterial pressure (MAP) before and after suctioning at different time points under PCV and VCV modes.

Time	PCV		VCV
	HR (beat/min)	MAP (mmHg)	HR (beat/min)	MAP (mmHg)
Basic level	95 ± 13	82 ± 12	96 ± 17	81 ± 10
Before suctioning	117 ± 16	86 ± 13	112 ± 15	86 ± 14
1 min	122 ± 17^*	89 ± 15^*	109 ± 12^*	88 ± 16^*
3 min	108 ± 15^*	90 ± 17^*	104 ± 12^*	89 ± 12^*
5 min	105 ± 17^*	91 ± 14^*	106 ± 21^*	90 ± 12^*
10 min	100 ± 14	87 ± 13	98 ± 17	84 ± 14

^*Compared with the baseline, ; HR: heart rate; MAP: mean arterial pressure; PCV: pressure-controlled ventilation; VCV: volume-controlled ventilation.