Feasibility of Anesthesiologist-Performed Preoperative Echocardiography for the Prediction of Postinduction Hypotension: A Prospective Observational Study

Table 2

Patient characteristics for all subjects and by the ability to obtain IVC measurements.

	All available data (n = 63)			(A) IVC measurements available (n = 48)			(B) IVC measurements not available (n = 15)			Comparison (A) vs. (B)
	N	%	Mean (SD)	N	%	Mean (SD)	N	%	Mean (SD)	value
Demographics
Age	63	—	64.1 (10.9)	48	—	62.8 (12.0)	15	—	68.1 (5.1)	0.098
Gender
Female	25	39.7	—	22	45.8	—	3	20.0	—	0.074
Male	38	60.3	—	26	54.2	—	12	80.0	—	—
Height	63	—	171.0 (9.7)	48	—	170.5 (10.3)	15	—	172.5 (7.5)	0.485
Weight	63	—	87.3 (15.8)	48	—	83.5 (14.0)	15	—	99.4 (15.6)	<0.001
BMI	63	—	29.6 (5.2)	48	—	28.4 (4.5)	15	—	33.6 (5.5)	0.001
BSA (m^2)	63	—	2.0 (0.5)	48	—	1.9 (0.2)	15	—	2.1 (0.2)	0.004
ASA physical status
2	33	52.4	—	25	52.1	—	8	53.3	—	0.933
3	30	47.6	—	23	47.9	—	7	46.7	—
Health characteristics
Hypertension	32	50.4	—	23	47.9	—	9	60.0	—	0.414
CVD	2	3.2	—	2	4.2	—	0	—	—	—
CAD	4	6.3	—	4	8.3	—	0	—	—	—
Preoperative MAP	63	—	99.7 (13.6)	48	—	99.3 (13.4)	15	—	101 (14.4)	0.687
Outcomes
MAP < 65 mmHg	44	69.8	—	32	66.7	—	12	80.0	—	0.520
MAP decrease > 30% preoperative value	43	68.3	—	31	64.6	—	12	80.0	—	0.350
MAP < 65 mmHg and decrease of > 30%	31	49.2	—	24	50.0	—	7	46.7	—	0.822

ASA, American Society of Anesthesiologists; BMI, body mass index; CVD, cardiovascular disease; IVC, inferior vena cava; MAP, mean arterial pressure (mmHg).