Chlorhexidine versus povidone–iodine skin antisepsis before upper limb surgery (CIPHUR) : an international multicentre prospective cohort study

Introduction Surgical site infection (SSI) is the most common and costly complication of surgery. International guidelines recommend topical alcoholic chlorhexidine (CHX) before surgery. However, upper limb surgeons continue to use other antiseptics, citing a lack of applicable evidence, and concerns related to open wounds and tourniquets. This study aimed to evaluate the safety and effectiveness of different topical antiseptics before upper limb surgery. Methods This international multicentre prospective cohort study recruited consecutive adults and children who underwent surgery distal to the shoulder joint. The intervention was use of CHX or povidone–iodine (PVI) antiseptics in either aqueous or alcoholic form. The primary outcome was SSI within 90 days. Mixed-effects time-to-event models were used to estimate the risk (hazard ratio (HR)) of SSI for patients undergoing elective and emergency upper limb surgery. Results A total of 2454 patients were included. The overall risk of SSI was 3.5 per cent. For elective upper limb surgery (1018 patients), alcoholic CHX appeared to be the most effective antiseptic, reducing the risk of SSI by 70 per cent (adjusted HR 0.30, 95 per cent c.i. 0.11 to 0.84), when compared with aqueous PVI. Concerning emergency upper limb surgery (1436 patients), aqueous PVI appeared to be the least effective antiseptic for preventing SSI; however, there was uncertainty in the estimates. No adverse events were reported. Conclusion The findings align with the global evidence base and international guidance, suggesting that alcoholic CHX should be used for skin antisepsis before clean (elective upper limb) surgery. For emergency (contaminated or dirty) upper limb surgery, the findings of this study were unclear and contradict the available evidence, concluding that further research is necessary

C-reactive Protein: Adjunct to Cardiovascular Risk Assessment

ABSTRACT Objectives: The study aimed to investigate whether elevated plasma high sensitivity C-reactive protein (hs-CRP) levels are independently associated with an increased risk of cardiovascular disease (CVD) and to then assess the effectiveness of the addition of hs-CRP testing to cardiovascular risk assessment by standard lipid screening. Methods: A retrospective hospital-based case-control study was designed. All patients attending Cross Crossing Medical Centre (CCMC) for routine cardiovascular assessment or emergency treatment were included. Cases were defined as patients with a cardiovascular event and controls as those without an event. Data collected included blood measurements of hs-CRP and cholesterol, demographic data, drug and risk factor history. Results: Odds ratio of 1.84 (95% CI 1.00, 3.38) indicated that a patient with elevated hs-CRP is 1.84 times more at risk of CVD than one with normal hs-CRP. Additionally, the association between hs-CRP and CVD was found to be independent of the other risk factors (p = 0.058). Hs-CRP ranked fourth as an indicator of risk above smoking and diabetes, and patients with both high hs-CRP and high cholesterol (OR = 9.5) were 3.5 times more at risk of CVD than someone with high cholesterol alone (OR = 6.0). Conclusions: Hs-CRP testing enhanced the clinical identification of patients at risk of cardiovascular events. It can therefore contribute to timely implementation of effective lifestyle modification and pharmaceutical intervention. Proteína C reactiva: Complemento para la Evaluación del Riesgo Cardiovascular RESUMEN Objetivos: El estudio apuntó a investigar si los niveles de proteína C reactiva (PCR-hs) de alta sensibilidad de plasma elevado están independientemente asociados con el aumento del riesgo de la enfermedad cardiovascular (ECV), y luego evaluar la efectividad de añadir la prueba PCR-hs para la evaluación del riesgo cardiovascular mediante detección (screening) estándar de lípidos. Métodos: Se diseñó un estudio caso-control retrospectivo con sede en el hospital. En el mismo fueron incluidos todos los pacientes que asistían al Centro Médico Cross Crossing (CCMC) para una evaluación cardiovascular de rutina o para tratamiento de urgencia. Los casos fueron definidos como pacientes con controles y eventos cardiovasculares, o sin un evento. Los datos recogidos incluyeron mediciones sanguíneas de PRC-hs y colesterol, datos demográficos, historia de factores de riesgo y de drogas. Resultados: El odds ratio de 1.84 (95% CI 1.00, 3.38) indicó que un paciente con PCR-hs elevado tiene un riesgo de ECV 1.84 veces mayor que uno con PCR-hs normal. Además, se halló que la asociación entre el PCR-hs y la ECV era independiente de los otros factores de riesgo (p = 0.058). La PCR-hs alcanzó el cuarto lugar como indicador de riesgo, por encima del hábito de fumar y la diabetes, y los pacientes con alto PCR-hs y alto colesterol (OR = 9.5) presentaban riesgo de ECV 3.5 veces mayor que aquellos que sólo tenían colesterol alto (OR = 6.0). Conclusiones: Las pruebas de PCR-hs mejoraron la identificación clínica de pacientes con riesgo de eventos cardiovasculares. Por lo tanto, estas pruebas pueden contribuir a implementar oportunamente una modificación para un estilo de vida y una intervención farmacéutica que sean efectivos