Impact of a hand hygiene educational programme on hospital-acquired infections in medical wards.

Improvement in hand hygiene (HH) compliance has been associated with a decrease in the incidence of hospital-acquired infection (HAI) and hospital-acquired methicillin-resistant Staphylococcus aureus (HA-MRSA) infection/colonization. We aimed to evaluate the impact of a multimodal intervention in medical wards on HH compliance, alcohol-based hand rub (AHR) consumption and incidence of HAI and HA-MRSA. A before-after intervention study and an assessment 1 year later were conducted in three internal medicine wards. HH compliance during routine patient care was monitored using the WHO HH observation method. AHR consumption was registered. HAI incidence was actively sought during the PRE and POST periods. HAI risk factors were prospectively recorded and incidence density was calculated. A total of 825 patients were prospectively followed in the PRE period and 868 patients in the POST period. We observed 1531 opportunities for HH in PRE and POST periods and 450 1 year later. HH compliance improved from 54.3% to 75.8% (p 0.005) and remained 75.8% at follow-up. AHR consumption increased from 10.5 to 27.2 L/1000 hospital-days and 31.5 L/1000 hospital-days at follow-up. Incidence density of HAI was 6.93 and 6.96/1000 hospital-days in the PRE and POST intervention periods, respectively. HA-MRSA incidence density was 0.92 in the PRE period vs. 0.25/1000 hospital-days in the POST period (p 0.2) and 0.15/1000 hospital-days (p 0.1) 1 year later. A sustained increase in AHR consumption was followed by an improvement in HH compliance after a multimodal campaign. A trend for lower incidence density of new hospital-acquired MRSA was detected in the POST intervention and follow-up periods.
(© 2011 The Authors. Clinical Microbiology and Infection © 2011 European Society of Clinical Microbiology and Infectious Diseases.)