PARADIGM MEDICAL August 2021 Editor’s Note
The age-old saying that “Prevention is better than Cure” has never been more relevant and necessary than now in this current uncertain and fearful pandemic time. Since a year ago, the social and medical media has been fiercely advocating households to practise good hygiene and to eat healthy nutrition. We can avoid an infection to a large extent at home. But how do we avoid hospital acquired infection (HAI) when patients are hospitalized?
In recent years, increased awareness of the morbidity and potential risk of HAIs has led to concerted prevention efforts. This month, we bring you an abstract of the Effect of Chlorhexidine Bathing every other day on Prevention of Hospital Acquired Infections in the surgical ICU. https://pubmed.ncbi.nim.nih.gov
Health care-associated infections (HAI) have been shown to increase length of stay, the cost of care, and rates of hospital deaths (Kaye and Marchaim, J Am Geriatr Soc 62(2):306–11, 2014; Roberts and Scott, Med Care 48(11):1026–35, 2010; Warren and Quadir, Crit Care Med 34(8):2084–9, 2006; Zimlichman and Henderson, JAMA Intern Med 173(22):2039–46, 2013). Importantly, infections acquired during a hospital stay have been shown to be preventable (Loveday and Wilson, J Hosp Infect 86:S1–70, 2014). In particular, due to more invasive procedures, mechanical ventilation, and critical illness, patients cared for in the intensive care unit (ICU) are at greater risk of HAI and associated poor outcomes. This meta-analysis aims to summarise the effectiveness of chlorhexidine (CHG) bathing, in adult intensive care patients, to reduce infection.
Methods
A systematic literature search was undertaken to identify trials assessing the effectiveness of CHG bathing to reduce risk of infection, among adult intensive care patients. Infections included were: bloodstream infections; central line-associated bloodstream infections (CLABSI); catheter-associated urinary tract infections; ventilator associated pneumonia; methicillin-resistant Staphylococcus aureus (MRSA); vancomycin-resistant Enterococcus; and Clostridium difficile. Summary estimates were calculated as incidence rate ratios (IRRs) and 95% confidence/credible intervals. Variation in study designs was addressed using hierarchical Bayesian random-effects models.
Results
Seventeen trials were included in our final analysis: seven of the studies were cluster-randomised crossover trials, and the remaining studies were before-and-after trials. CHG bathing was estimated to reduce the risk of CLABSI by 56% (Bayesian random effects IRR = 0.44 (95% credible interval (CrI), 0.26, 0.75)), and MRSA colonisation and bacteraemia in the ICU by 41% and 36%, respectively (IRR = 0.59 (95% CrI, 0.36, 0.94); and IRR = 0.64 (95% CrI, 0.43, 0.91)). The numbers needed to treat for these specific ICU infections ranged from 360 (CLABSI) to 2780 (MRSA bacteraemia).
Conclusion
This meta-analysis of the effectiveness of CHG bathing to reduce infections among adults in the ICU has found evidence for the benefit of daily bathing with CHG to reduce CLABSI and MRSA infections. However, the effectiveness may be dependent on the underlying baseline risk of these events among the given ICU population. Therefore, CHG bathing appears to be of the most clinical benefit when infection rates are high for a given ICU population.
The findings from another single-center, randomized controlled trial (Joshua T Swan et al, Crit. Care Med. 2016 Oct) also shows evidence that compared with daily soap and water bathing vs 2% chlorhexidine gluconate bathing every other day for up to 28 days decreases the risk of hospital-acquired catheter-associated urinary tract infection, ventilator-associated pneumonia, incisional surgical site infection and primary bloodstream infection in surgical ICU patients.
Bathing Patients with CHG (refer article)
Patient wipes containing 2% chlorhexidine gluconate serves as an alternative in patient bathing. According to Reynolds and Keating (2021, July 29), chlorhexidine gluconate can make a significant improvement in patient outcomes.
