Association of infraclavicular axillary vein diameter and collapsibility index with general anesthesia-induced hypotension in elderly patients undergoing gastrointestinal surgery: an observational study

Table 1 Patient demographic data (N = 173)

Variables
Age (years)	72.25 ± 5.47
Sex (male/female)	98/75
BMI (kg/m²)	22.68 ± 2.37
ASA physical status, 1/2/3	14/151/8
Diabetes	17 (9.8)
Hypertension	40 (23.1)
Cardiovascular disease	44 (25.4)
Operation category, cancer of stomach/colon/rectum/appendix	41/58/47/27

Values are mean ± SD or number of patients (% of N). ASA, American Society of Anesthesiologists

ISSN: 1471-2253