Seher Erdoğan

Therapeutic plasma exchange in primary hemophagocytic lymphohistiocytosis: Reports of two cases and a review of the literature

We report two children who were diagnosed as having primary hemophagocytic syndrome and who successfully underwent therapeutic plasma exchange (TPE). The first patient was a 6-month-old girl diagnosed with HLH who was admitted to the pediatric intensive care unit. The patients clinical condition worsened on the 9th day of the HLH-2004 treatment protocol. Her ferritin level was found 50.000 ng/mL, and TPE was performed for 9 sessions, after which her clinical condition and laboratory findings improved. The patient is still on the HLH-2004 protocol and waits for a suitable stem cell transplantation donor. Case 2 involved a Syrian girl with HLH under follow-up who was receiving the HLH-2004 treatment protocol for reactivation. She presented to emergency department with fever, where her ferritin level was measured greater than 100.000 ng/mL; she was then transferred to the pediatric intensive care unit where four sessions of TPE were performed, after which her clinical condition and laboratory findings improved. However, the patient was admitted again one month later with gastrointestinal bleeding and died despite all efforts. By describing these two cases, we wish to emphasize that TPE can produce a rapid improvement until the time of stem cell transplantation in patients with hemophagocytic syndrome who do not respond to traditional treatments.

Reliability of ultrasonography and the alvarado scoring system in acute appendicitis

Yazar AS, Erdoğan S, Şahin C, Güven Ş. Reliability of ultrasonography and the Alvarado scoring system in acute appendicitis. Turk J Pediatr 2018; 60: 173-179. In this study, we aimed to evaluate the diagnostic performance of ultrasonography, the Alvarado score, mean platelet volume and C-reactive protein in the diagnosis of acute appendicitis. Patients admitted to the pediatric emergency department with abdominal pain who were operated on with a preliminary diagnosis of acute appendicitis were evaluated. The patients who had acute appendicitis diagnosis in the histopathological assessment were considered as the Appendicitis (App) Group, while patients who did not have acute appendicitis according to histopathology were considered as the Non-app Group. Of 200 patients assessed in the study, 137 (68.5%) were male and 63 (31.5%) were female. Of the patients operated on; 170 (85%) had acute appendicitis, while the pathological results of 30 (15%) were not consistent with acute appendicitis. The Alvarado score of the patients in App Group was significantly higher than those in Non-app Group (p=0.001). The sensitivity and specificity of the Alvarado score and ultrasonography were 60%, 81.18% and respectively, for the diagnosis of appendicitis. There were no significant differences (p > 0.05) in terms of average white blood cell, absolute neutrophil count, platelet count, mean platelet volume and C-reactive protein between the two groups. According to our study the use of Alvarado Scoring System with ultrasonography is more effective and accurative than ultrasonography performing alone. We recommend performing ultrasonography on patients with right lower quadrant pain and suspected appendicitis admitted to the emergency department and to operate on patients with a ultrasonography-supported appendicitis diagnosis and an Alvarado score of 7 and above. Patients with an appendicitis diagnosis not supported by ultrasonography and an Alvarado score lower than 7 should be closely monitored.

Hypophosphatemia associated risk factors in pediatric intensive care patients

Şan ES, Erdoğan S, Boşnak M, Şan M. Hypophosphatemia associated risk factors in pediatric intensive care patients. Turk J Pediatr 2017; 59: 35-41. The aim of this work is to determine the prevalence and risk factors of hypophosphatemia in pediatric patients admitted to intensive care unit. The study was performed prospectively in patients admitted to the Pediatric Intensive Care Unit between June 2014 and December 2014. Fifty-seven patients were included in the study. The mean age of the study population was 24 months (2-192 months); 25 patients (43.9%) were male and 32 were female (56.1%). The mean body weight z-score was -1.47 ± 2.23, and 23 (40.4%) patients had malnutrition. On admission 16 (28.1%) patients had hypophosphatemia. There were no statistically significant differences between the hypophosphatemic patient group and normophosphatemic patient groups in terms of demographic and clinical characteristics. There were also no significant differences between the two groups in terms of risk factors. Potassium and creatinine levels were significantly lower in the hypophosphatemic group, compared to the normophosphatemic group. According to a multivariate logistic regression analysis, risk factors for hypophosphatemia were low potassium level (OR: 16.76; 95% CI: 2.09 - 134.72; p: 0.008), malignant solid tumors (OR: 52.40; 95% CI: 2.04 - 1,344.32; p: 0.017, p: 0.036). and female gender (OR: 6.18; 95% CI: 1.12 - 34.00; p: 0.036). Prospective studies with larger sample size should be conducted to study the prevalence and risk factors of hypophosphatemia at pediatric intensive care unit.

A case of paralytic rabies mimicking Guillain-Barre syndrome

Rabies is an acute, fatal viral infection of the central nervous system, and one of the oldest zoonotic diseases in human history. A Syrian boy aged 14 had been hospitalized for 2 days with a preliminary diagnosis of Guillain-Barre syndrome because of muscle weakness that spread rapidly to the upper extremities. He was transferred to our unit when the muscle weakness worsened. Respiratory failure developed following admission to the ICU, and the patient was intubated and given ventilator support. Ascending paralysis and albuminocytologic dissociation in the cerebrospinal fluid (CSF) examination suggested a preliminary diagnosis of Guillain-Barre syndrome and plasmapheresis treatment was initiated. No clinical improvement was achieved despite plasmapheresis. On the 10th day of hospitalization, we learned that he had been bitten on the ankle by a stray dog in Syria 2 months ago and had not received prophylaxis. Suspecting that this might be a case of rabies, body fluid samples of the patient were sent to the National Reference Laboratory. The patient died on the 12th day of admission. A postmortem brain biopsy was taken, and Negri bodies were detected. This case report emphasizes that rabies should be considered in the differential diagnosis of patients presenting with paralysis.