Analysis of Wet Pack Incidence in Steam Sterilization: A Study in a Chinese Medical Center

17 March 2024: Lab/In Vitro Research

Yanhua Chen ^12BEF* , Li Bao ^3BC* , Liangying Yi ^12AG* , Ruixue Hu ^12CD

DOI: 10.12659/MSM.942601

Med Sci Monit 2024; 30:e942601

Table 3 Multivariate logistic regression analysis of factors associated with wet pack occurrence.

Variable	Description	Beta value	Standard error	Wald χ2	P value	Odds ratio	95% confidence interval
Weather	Sunny			15.769
	Overcast	0.630	0.213	8.724	0.003	1.878	1.236–2.853
	Rainy	0.889	0.253	12.366		2.432	1.482–3.992
Item in the sterilized pack	Dressing	1.193	0.260	21.074		3.297	1.981–5.486
Item in the sterilized pack	Instrument
Packaging material	Cotton fabrics			20.224
	Non-woven fabrics	1.337	0.310	18.601		3.808	2.074–6.991
	Paper-plastic combinations	−0.032	0.213	0.023	0.880	0.968	0.638–1.470
Whether the pack had been laid flat, leaning at an acute angle, or upright	Flat			0.413	0.813
	Acute angle	0.040	0.245	0.027	0.870	1.041	0.644–1.682
	Upright	−0.100	0.249	0.161	0.689	0.905	0.556–1.474
Placement of the pack on the top or bottom shelf inside the sterilizer chamber	Top shelf	0.595	0.217	7.500	0.006	1.813	1.184–2.775
	Bottom shelf
Whether the item had been packaged in compliance with guidelines?	Yes	1.040	0.200	27.028	< 0.001	2.830	1.912–4.188
	No
Cooling time after sterilization	≥30 min	0.792	0.204	15.145		2.209	1.482–3.292
Cooling time after sterilization