Suitability of the NNIS index for estimating Orthopaedics surgical-site infection risk at a university hospital in INDIA

Amit Kumar; Ghanshyam Narayan Khare

Volume : V, Issue : I, January - 2016

Suitability of the NNIS index for estimating Orthopaedics surgical-site infection risk at a university hospital in INDIA

Amit Kumar, Ghanshyam Narayan Khare

Abstract :

Surveillance for surgical-site infection is a standard procedure to control surgical infections and establish prevention measures. Methods: A total of 745 elective orthopaedic surgical procedures performed over 12 months were followed prospectively for 12 months after surgery. Each patient was classified according to American Society of Anaesthesiologists(ASA) score and National Nosocomial infections surveillance(NNIS) risk index was calculated for each patient. Result: Study found a strong relationship between NNIS Index and surgical site infection development. Nearly eleven fold higher incidence rate in wound class iii/iv(22.22%)compare to wound class i/ii(2.02%), three fold higher in ASA≥2(6.5%) to ASA<2(2.38%), eleven fold higher in duration of surgery >2hours(8.46%) to duration of surgery <2hours(0.79%).Poor wound condition class iii/iv(RR=11,95%CI=1.67-3.11) and prolong duration of surgery >2hours(RR=10.71,95%CI=1.32-3.42) were significantly responsible for infection. The study could not find statistically significant association between ASA score and SSIs. Conclusion: The NNIS index system is suitable for prediction of SSIs for this population.