A 15-year-old previously healthy girl presented in full arrest after 1 week of flu-like symptoms, recent diagnosis of infectious mononucleosis, and 1 day of abdominal pain. There was no history of trauma. Focused assessment with sonography for trauma examination showed free fluid in the abdomen. The patient died despite aggressive resuscitative management and emergency laparotomy with splenectomy, which showed grade V splenic laceration. Infectious mononucleosis is a common viral illness of adolescence. Spontaneous splenic rupture is a rare but potentially fatal complication. Anticipatory guidance about the importance of seeking medical care if abdominal pain develops during infectious mononucleosis is crucial to early diagnosis and intervention in the case of rupture. We discuss the current literature surrounding the outpatient follow-up of splenomegaly associated with infectious mononucleosis, as well as current practice and treatment options when rupture occurs.
I nfectious mononucleosis (IM) is most commonly caused byEpstein-Barr virus (EBV), a member of the herpes group. 1 In the United States, symptomatic disease peaks in incidence between 15 and 24 years of age and affects up to 3% of college students each school year. 2Y4 Most cases of IM are self-limited, and patients return to school and activities within 2 to 4 weeks. Splenomegaly is a well-known associated finding during the course of IM, occurring in approximately 50% of patients. 5Y9 However, only a minority of patients with splenomegaly report abdominal pain, and even fewer have severe complications such as splenic rupture. Splenic rupture is the most common potentially fatal complication of IM and has been estimated to occur in 0.1% to 0.2% of all cases. 3, 9Y11 We present a case of a patient with a diagnosis of IM who developed abdominal pain and subsequently presented in cardiac arrest from spontaneous splenic rupture (SSR) to highlight the importance of anticipatory guidance regarding this particular symptom. We also discuss the outpatient management of IM with splenomegaly as well as current management considerations in the event that splenic rupture occurs.
CASEA 15-year-old female patient with no significant medical history presented to the pediatric emergency department (ED) in cardiac arrest. She had been ill for several days and, on the day before presentation, had been diagnosed with IM by her primary care provider. During the evening and night before presentation, she had reportedly developed abdominal pain and had been taking acetylsalicylic acid for pain control. The morning of presentation, she complained of abdominal pain and weakness and collapsed at home shortly after calling 911. There was no known history of trauma. On arrival of emergency medical service providers, she was still talking but deteriorated and went into cardiac arrest en route to the hospital. She was taken to a community ED where she was intubated. Access was established with 2 intraosseous lines, and she underwent cardiopulmonary resuscitation with brief and i...