Pre-anesthesia ultrasound monitoring of subclavian vein diameter changes induced by modified passive leg raising can predict the occurrence of hypotension after general anesthesia: a prospective observational study

Table 1 Baseline Demographic and Hemodynamic Parameters in all Patients

Parameter	All patients (n = 107)	Group N (n = 80)	Group H (n = 27)	P-value
Age,y	36.36 ± 7.15	36.40 ± 6.80	36.26 ± 8.26	0.93
ASA PS I/II	95/12	73/7	22/5	0.17
NPO period,h	15.37 ± 2.24	15.48 ± 2.25	15.07 ± 2.25	0.43
BMI,kg/m2	21.51 ± 2.66	21.49 ± 2.52	21.58 ± 3.09	0.89
Propofol,mg	109.25 ± 13.31	108.25 ± 12.33	112.22 ± 15.77	0.18
HRb,beats/min	73.25 ± 10.83	73.71 ± 11.24	71.89 ± 9.59	0.45
MBPb,mm Hg	85.49 ± 6.88	85.43 ± 6.79	85.67 ± 7.30	0.88
HRplr,beats/min	73.71 ± 10.34	74 ± 10.73	72.85 ± 9.25	0.62
MBPplr,mmhg	85.08 ± 8.71	85.56 ± 7.61	83.67 ± 11.44	0.33

ASA PS American Society of Anesthesiologists physical status, NPO nil per os (no oral intake), BMI Body Mass Index
HRb Heart Rate of baseline, MBPb Mean Blood Pressure of baseline, PLR Passive Leg Raising test
HRplr Heart Rate of PLR, MBPplr Mean Blood Pressure of PLR

ISSN: 1471-2253