1. SURGICAL SITE INFECTION IN POSTERIOR SPINE SURGERY
Owolabi BS, Omotayo A. Ojo, Oseni A Lagos University Teaching Hospital, Lagos, Nigeria Keywords: Surgical Site Infection, Posterior Spine Surgery, Spine Rehabilitation Centre, Spine Instrumentation, Diabetes and Spine Surgery

2. QUICK OVERVIEW
Background on surgical site infection in posterior spine surgery
What it is
Why it happens
Implications of its presence
Specific Objectives of the research
Outcome of the research

3. OUTLINE
Problem Statement
Related Works
Methods
Results
Summary

4. PROBLEM STATEMENT
Hospital acquired infection is one of the major infectious diseases having a huge economic impact worldwide
WHO
Surgical site infection (SSI) is the second most common health care-associated infection (HCAI).
SSIs remain a substantial cause of morbidity, prolonged hospitalization, and death, despite the advances been made in infection control practices.

5. METHODS
A retrospective cross-sectional study of all consecutive patients who had posterior spine surgeries between January 2012 and July 2014.
Patients who had spinal surgery for an infective process were excluded.
All patients who had wound infection were noted and culture sensitivity was noted.
Results were analysed to get the infection rate, reasons for prolonged stay on admission as well as possible contributing factors to wound infections.

6. RESULTS A total of 62 patients records was reviewed (M:F ratio 1.2:1)
SSI was classified as deep or superficial to the fascia
10 (16.1%) patients were found to have an SSI
7 (11.3%) patients having deep infections.
3 (4.8%) had superficial infection.
Vertebral level operated, aetiology and diagnosis were not statistically significant for SSI. However, an increase in the rate of SSI was observed with instrumentation.
Comorbidities such as poorly controlled diabetes mellitus, Obesity, Religion (JW) were noted to be associated with increased rate of infections

7. RESULTS
Diabetes mellitus was found to be an independent risk factor for all SSI and deep SSI (P = and P = 0.042).
The length of surgery time was also found to be a risk factor for SSI (P = 0.038).
Patients who had their wound exposed inadvertently before day 10 postop also had increased rate of SSI.
Demands for in-patient rehabilitation are responsible for prolonged hospital admission.
The organisms cultured were Pseudomonas and staph spp.

8. RESULTS

9. Incidence of SSI in diabetes
RESULTS
Incidence of SSI in diabetes
Univariate comparison of diabetes mellitus in patients with superficial or deep SSI after spinal surgery

10. RESULTS

11. SUMMARY
The incidence of SSI in posterior spine surgery In this study is 16.1%
Diabetes mellitus is a risk factor for all SSIs and deep SSI
The length of surgery time is a risk factor for SSI
There is an increase in the rate of SSI with instrumentation.
Patients who had their wound exposed inadvertently before day 10 postop have increased rate for SSI.
Obesity and Religion (JW) are also risk factors for SSI

12. Thank You