Serious adverse events and 30-day hospital readmission rate following elective total knee arthroplasty: a systematic review and meta-analysis

Table 4 Pooled causes of 30-day readmissions for pTKA

	Number of reporting studies [refs]	Sample size	N of events (30d readmissions)	Rate (%)	95% CI	I² (%)
Systemic conditions
VTE	4 [15, 19, 26, 27]	225,523	881	0.41	0.26−0.60	96.4
GU complications	3 [15, 19, 26]	220,316	341	0.18	0.06−0.34	98.0
Respiratory complications	3 [15, 19, 26]	220,316	373	0.17	0.09−0.26	94.5
Cardiac complications	4 [15, 19, 26, 27]	225,523	239	0.15	0.08−0.24	93.2
Sepsis	3 [15, 19, 26]	220,316	313	0.15	0.05–0.3	98.0
Stroke / CVA	3 [15, 19, 26]	220,316	45	0.02	0.004−0.05	90.0
Local conditions
Superficial infection	3 [15, 19, 26]	220,316	644	0.32	0.10−0.65	99.0
Deep + periprosthetic infection	3 [15, 26, 27]	154,230	455	0.56	0.16−1.21	98.3

VTE, venous thromboembolism; GU, genitourinary complications (renal insufficiency, renal failure, urinary tract infections [UTI]; CVA, cerebrovascular accident. Respiratory complications: pneumonia, unplanned intubation, ventilation > 48 h. Cardiac complications: myocardial infarction, cardiac arrest

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