Volume 65, Issue 5 (3 2007)                   Tehran Univ Med J 2007, 65(5): 33-38 | Back to browse issues page

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Amini E, Daneshjou Kh, Ghasemi M. A 17-year study of septic arthritis in neonates in two University Hospitals. Tehran Univ Med J 2007; 65 (5) :33-38
URL: http://tumj.tums.ac.ir/article-1-784-en.html
Abstract:   (5768 Views)
Background: Septic arthritis in neonates can be difficult to diagnose and may be associated with severe morbidity and even mortality. A majority of apparent septic arthritis cases may have a negative culture, thereby creating a dilemma regarding treatment. The present study investigates demographic, laboratory and clinical variables of septic arthritis in neonates hospitalized over a period of 17 years.
Methods: The medical files of all neonates hospitalized in Imam Khomeini and Vali-e-Asr Hospitals in Tehran, Iran, from 1989 to 2005 were assessed and the files of 59 neonates with a diagnosis of septic arthritis were further evaluated. Variables such as age, sex, gestational age, birth weight, history of hospitalization, body temperature, involved joints, blood and joint fluid cultures, ESR, CRP, and WBC count were evaluated in this group of hospitalized patients. Results: Of the 59 neonates, 39 cases were male and 20 cases were female. At the time of hospitalization, 45.8% of the neonates were 20-28 days old and 52.2% were 10-20 days old, and 67.7% and 35.6% of cases had been preterm and had low birth weight, respectively. Histories of hospital admission were found for 30.5% of patients. The two most common joints involved were hip (30.5%) and knee (23.72%). The mean body temperature was 36.6oC. ESR was elevated in all patients (mean 85 mm/h) and CRP was positive in all cases. The WBC count was >15,000/mm3 in 39% of the neonates and was in the range of 10,000-15,000/mm3 for 47.4%. Blood and joint fluid cultures were positive in 51% and 91.5% of cases, respectively. The organisms isolated from joint fluid culture were Klebsiella (54%), S. aureus (37%) and E. coli (9%). Conclusion: Due to the rarity of septic arthritis in neonates and paucity of signs and symptoms, all neonates with a high index of suspicion should be examined carefully with septic arthritis in mind.
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