The impact of anesthesia methods on postoperative outcomes of lower limb surgeries in elderly patients over 90 years old: A multicenter propensity-matched study

Table 1 Patient characteristics before PSM between GA group and RA group

Patient characteristics	GA(n = 363)	RA(n = 197)	P-value
Gender (Male)	140(38.6%)	68(34.5%)	0.344 ^a
BI score	40.00(35.00–45.00)	30.00(25.00–40.00)	0.000^d
Age	92.00(91.00–94.00)	92.00(91.00–94.00)	0.685 ^d
ASA classification			0.001^a
≤III	282(77.7%)	165(83.7%)	--
> III	81(22.2%)	32(16.2%)	--
Emergency	25(6.9%)	10(5.1%)	0.398 ^a
Hypertension	173(47.7%)	91(46.2%)	0.740 ^a
CAD	181(49.9%)	64(32.5%)	0.000^a
Heart failure	62(17.1%)	22(11.2%)	0.061 ^a
Cardiac arrhythmia	131(36.1%)	72(36.5%)	0.914 ^a
COPD	103(28.4%)	29(14.7%)	0.000^a
Asthma	5(1.4%)	3(1.5%)	1.000 ^b
Pneumonia	92(25.3%)	28(14.2%)	0.002^a
Pulmonary embolism	2(0.6%)	1(0.5%)	1.00 ^b
Bronchitis/Bronchiectasis	74(20.4%)	15(7.6%)	0.000^a
Dementia	25(6.9%)	16(8.1%)	0.592 ^a
Epilepsy	0(0.0%)	2(1.0%)	0.123 ^b
Stroke	79(21.8%)	45(22.8%)	0.769 ^a
Renal failure	38(10.5%)	17(8.6%)	0.485 ^a
Diabetes	45(12.4%)	30(15.2%)	0.347 ^a
K⁺	3.91(3.58–4.31)	4.02(3.72–4.34)	0.035^d
Na⁺	139.6(137.0-142.0)	139.5(137.0-141.6)	0.682 ^d
PLT	157.0(117.0-203.0)	159.0(134.0-220.0)	0.024^d
WBC	7.74(6.25–9.71)	7.51(5.99–9.66)	0.365^d
Albumin	35.76 ± 4.87	35.60 ± 4.46	0.372 ^c
Hemoglobin	104.48 ± 19.25	104.10 ± 19.60	0.852 ^c
Surgery duration	80.0(62.0-105.0)	90.0(70.0-110)	0.039^d
Blood loss	100.0(50.0-400.0)	200.0(100.0-300.0)	0.029^d

Notes: a: Chi-square test, b: Fisher’s exact test, c: t-test, d: Mann-Whitney U test
PSM Propensity Score Matching, BI Barthel index, ASA American Society of Anesthesiologists, CAD Coronary artery disease, COPD Chronic obstructive pulmonary disease, WBC White blood cell, PLT Platelet

ISSN: 1471-2253