The determination of WBC count and differential is useful in the diagnosis of appendicitis in children presenting to the ED with nontraumatic acute abdominal pain, regardless of age. High WBC counts and left shift are independently, strongly associated with appendicitis in children aged 1 to 19 years. In fact, for this subset of patients older than 4 years, the most common diagnosis in the setting of an elevated WBC count was appendicitis. The presence of an increased WBC count or left shift carries with it a high sensitivity (79%), and the presence of both high WBC count and left shift has the highest specificity (94%). These values are, therefore, helpful in the diagnosis and exclusion of appendicitis. Although not absolute, the WBC count and left shift can be helpful in the diagnosis and exclusion of appendicitis.

IntroductionIncreasingly, pediatric and emergency medicine (EM) residents are pursuing clinical rotations in low-income countries. Optimal pre-departure preparation for such rotations has not yet been established. High-fidelity simulation represents a potentially effective modality for such preparation. This study was designed to assess whether a pre-departure high-fidelity medical simulation curriculum is effective in helping to prepare residents for clinical rotations in a low-income country.Methods43 pediatric and EM residents planning clinical rotations in Liberia, West Africa, participated in a simulation-based curriculum focused on severe pediatric malaria and malnutrition and were then assessed by survey at three time points: pre-simulation, post-simulation, and after returning from work abroad.ResultsPrior to simulation, 1/43 (2%) participants reported they were comfortable with the diagnosis and management of severe malnutrition; this increased to 30/42 (71%) after simulation and 24/31 (77%) after working abroad. Prior to simulation, 1/43 (2%) of residents reported comfort with the diagnosis and management of severe malaria; this increased to 26/42 (62%) after simulation and 28/31 (90%) after working abroad; 36/42 (86%) of residents agreed that a simulation-based global health curriculum is more useful than a didactic curriculum alone, and 41/42 (98%) felt a simulator-based curriculum should be offered to all residents planning a clinical trip to a low-income country.ConclusionHigh-fidelity simulation is effective in increasing residents’ self-rated comfort in management of pediatric malaria and malnutrition and a majority of participating residents feel it should be included as a component of pre-departure training for all residents rotating clinically to low-income countries.

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