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ORIGINAL ARTICLE
Year : 2020  |  Volume : 68  |  Issue : 7  |  Page : 1424-1431

Post-cataract surgery cluster endophthalmitis due to multidrug-resistant Pseudomonas aeruginosa: A retrospective cohort study of six clusters


1 Consultant, Vitreoretina and Uvea Services, MGM Eye Institute, Raipur, Chhattisgarh, India
2 DNB Trainee, MGM Eye Institute, Raipur, Chhattisgarh, India
3 Consultant, Cornea and Anterior Segment Services, MGM Eye Institute, Raipur, Chhattisgarh, India
4 Consultant, Orbit, Oculoplasty and Ocular Oncology Services, MGM Eye Institute, Raipur, Chhattisgarh, India

Correspondence Address:
Dr. Swapnil M Parchand
Vitreoretina and Uvea Services, MGM Eye Institute, Raipur, Chhattisgarh - 493 111
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_1612_19

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Purpose: To analyze clinical presentations, antibiotic susceptibility, and visual outcomes in six clusters of post cataract surgery endophthalmitis caused due to multidrug-resistant Pseudomonas aeruginosa (MDR-PA). This was a hospital-based retrospective cohort study. Methods: Our study comprised sixty-two patients from six nonconsecutive clusters of post cataract surgery endophthalmitis caused by MDR-PA referred to our tertiary eye care institute. Demographic details, best-corrected visual acuity (BCVA), clinical features, microbiological findings, and patient management were reviewed. Results: The interval between onset of symptoms and presentation ranged from 1 to 7 (mean: 4.61 and median: 5) days. The presenting BCVA was no light perception in 17 (27.4%) eyes, light perception in 35 (56.4%) eyes, and hand movement or better in 10 (16.1%) eyes. All patients had hypopyon and vitreous exudates. Corneal infiltrates were noted in 40 (64.5%) eyes. Panophthalmitis was diagnosed in 20 (32.2%) eyes. The surgical intervention included intraocular antibiotics (IOAB) in 8 (12.9%) eyes, pars plana vitrectomy with IOAB in 26 (41.9%) eyes, and evisceration in 23 (37.09%) eyes. At 6 weeks, BCVA of 20/200 or better was achieved in 9 (14.5%) eyes. Pseudomonas aeruginosa was least resistant to colistin (8.3%), piperacillin (31.8%), and imipenem (36.1%). Ceftriaxone and ceftazidime resistance was seen in 80.5% and 70% isolates, respectively. Conclusion: Cluster endophthalmitis due to MDR-PA has poor visual outcomes with high rates of evisceration. In the setting of cluster endophthalmitis where MDR-PA is the most common etiology, piperacillin or imipenem can be the first drug of choice for empirical intravitreal injection for gram-negative coverage while awaiting the drug susceptibility report.


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