BACKGROUND
The history of conflicts in the Middle East has resulted in a high burden of complications from conflict-related wounds like posttraumatic osteomyelitis (PTO). This is particularly challenging to manage in settings like Mosul, Iraq and Gaza, Palestine, where healthcare systems are weakened. In nonconflict settings, PTO caused by Pseudomonas aeruginosa (PAPTO) can lead to >20% of treatment failures. We aim to describe the clinical characteristics, outcomes, and management, in PAPTO patients admitted to Médecins Sans Frontières (MSF) facilities in Mosul and Gaza between 1 April 2018 and 31 January 2022.
METHODS
We conducted a retrospective cohort study on patients with PAPTO diagnosed with culture of intraoperative bone biopsy, using routinely collected data.
RESULTS
Among 66 PAPTO episodes from 61 enrolled patients, 37.9% had a multidrug-resistant Pseudomonas aeruginosa, with higher antibiotic resistance in Gaza. Polymicrobial infections were prevalent (74.2%), mainly involving Staphylococcus aureus (74.1%), being predominantly methicillin-resistant (95.0%). Overall, 81.7% received appropriate antibiotic treatment, with monotherapy used in 60.6% of episodes and a median treatment duration of 45.5 days. Recurrence was observed in 24.6% of episodes within a median of 195 days (interquartile range, 64-440 days). No significant differences were found in recurrence rates based on the type of antibiotic treatment (mono- or dual therapy) or episode (mono- or polymicrobial).
CONCLUSIONS
Management of PAPTO in the conflict-affected, low-resource settings of Mosul and Gaza achieved a recurrence rate aligned with global reports through appropriate and targeted antibiotic use, primarily in monotherapy, provided over a mean treatment duration of 45.5 days.
Post-traumatic osteomyelitis (PTO) is a serious consequence of orthopaedic trauma often complicated with multi-drug resistant (MDR) infections, a major health issue globally and particularly in conflict settings like Gaza, Palestine. In this study we aimed to provide a description of the clinical characteristics and outcomes of PTO patients treated by MSF in our reconstructive surgery centres in Gaza, Palestine.
METHODS
This is a retrospective cohort study using routinely collected clinical data on patients with PTO admitted to the reconstructive surgery centres supported by MSF in Gaza, between 01-December-2018 and 15-September-2021 and followed up till 31-January-2022.
RESULTS
202 patients with 275 PTO episodes, primarily to gunshot wounds resulting from the conflict in Gaza were included. Among all episodes, 43% (118/275) were polymicrobial, with 437 organisms isolated in total. The most common isolated pathogens were Staphylococcus aureus (157/437, 36%), Staphylococcus epidermidis (71/437, 16%) and Pseudomonas aeruginosa (45/437, 10%). 33% (146/437) of the isolates were MDR; the most prevalent being Methicillin-resistant Staphylococcus aureus [MRSA, (97/146, 66%)] and extended spectrum beta-lactamase [ESBL, (24/146, 16%]. 77 (38%) of PTO patients had >=1 recurrent infection during their follow-up. The odds of developing an MDR infection with a polymicrobial episode were almost twice higher than with a monomicrobial episode [OR 2.39 (95% CI 1.36 - 4.24), p-value=0.03]. Patients admitted within 1 year from their injury were almost 80% less likely to develop an MDR infection versus those admitted >=4 years from their injury [OR 0.17 (95% CI (0.03 - 0.73), p-value=0.031].
CONCLUSION
The study results highlighted the level of complexity of PTO cases seen in Gaza with a high risk of recurrent infections. This provides an evidence-based data to guide the existing MSF treatment guidelines.
KEY MESSAGE
Treating post-traumatic osteomyelitis cases in Gaza is complex and is presented with high MDR infections and risk of recurrent infections.
This abstract is not to be quoted for publication.