Vibration response imaging: a novel noninvasive tool for evaluating the initial therapeutic effect of noninvasive positive pressure ventilation in patients with acute exacerbation of chronic obstructive pulmonary disease

Table 4 Clinical observation indices of AECOPD patients at different time points

Group	HR (/Min.)	MAP (mmHg)	RR (/Min.)	SPO₂(%)	VAS	AMUS	PH	PCO₂(mmHg)	PO₂/FiO₂	HCO₃mmol/l
T1	109.31 ± 14.62	99.63 ± 10.36	36.35 ± 7.92	94.51 ± 2.52	6.68 ± 0.79	4.21 ± 0.83	7.27 ± 0.09	87.35 ± 9.61	243 ± 32	35 ± 6
T2	98.24 ±7.13	98.45 ± 9.72	25.21 ± 6.43	94.23 ± 2.13	4.31 ± 0.56	3.12 ± 0.48
T3	97.95 ± 8.52	98.11 ± 10.63	23.24 ± 8.21	94.78 ± 2.41	3.98 ± 0.84	3.03 ± 0.52	7.33 ± 0.12	71.31 ± 7.53	257 ± 24	34 ± 4
T4	99.65 ± 8.72	99.23 ± 11.37	26.54 ± 9.16	94.35 ± 2.31	4.82 ± 0.82	3.64 ± 0.68
F	4.66	0.01	2.25	0.05	5.35	2.36	0.69	6.36	1.20	0.53
P	0.016 ^a,c	0.99	0.12 ^{a c}	0.95	<0.01 ^{a, c}	0.11 ^{a, c}	0.41	0.02 ^d	0.26	0.61

Post hoc: ^aP < 0.05 (T2 vs. T1); ^bP < 0.05 (T4 vs. T2), ^cP < 0.05 (T4 vs.T1), ^dP < 0.05 (T3 vs.T1).
Abbreviations: TP = Time point, T1 = Before NPPV treatment, T2 = at 15 min of NPPV treatment, T3 = at 2 hours of NPPV treatment, T4 = at 15 min after the end of NPPV treatment, HR = heart rate, MAP = mean arterial pressure, RR = respiratory rate, SPO₂ = Pulse oxygen saturation, VAS = visual analogue scale grading, AMUS = scale for accessory muscle use, PH = Potential Of Hydrogen, PCO₂ = partial pressure of carbon dioxide.

ISSN: 1465-993X