• Baruch Klin, Itai Gueta, Haim Bibi, Shaul Baram, and Ibrahim Abu-Kishk.
• Pediatric Division, Shamir Medical Center (Assaf Harofeh), Zerifin, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
• Medicine (Baltimore). 2021 Jul 30; 100 (30): e26793e26793.

AbstractPrimary spontaneous pneumothorax (PSP) commonly occurs in adolescents. PSP symptoms can mimic cardiac event. We aimed to examine electrocardiography (ECG) changes that accompanied PSP in relation to side and size of pneumothorax.A retrospectively reviewed 57 adolescents presented with PSP and underwent a cardiac evaluation.Overall, 49 patients (86%) were male, median age of 16 years. Of these, 1 patient had a known mitral valve prolapse. In 56 patients the initial episode of PSP was unilateral (16 left sided and 40 right sided), and 1 was bilateral. The main initial symptom was chest pain or dyspnea and chest pain 66.6% and 33.3% respectively. Small pneumothorax was right and left sided in 1and 8 patients respectively, medium right (n = 8) medium left (n = 22), large right (n = 7) and large left (n = 10). One additional patient had medium bilateral pneumothorax. ECG findings were abnormal in 12 patients (21%) and included ST elevation in 5 patients, inverted T wave in 2 patients, incomplete right bundle branch block in 2 patients, poor R wave progression, left axis deviation and low QRS voltage in 1 patient each. Only 2 patients had abnormal echocardiography findings, MPV (n = 1) and minimal mitral and tricuspid regurgitation (n = 1). Serum troponin-T levels were normal in all patients.ECG changes were found in 21% among pediatric patients with PSP. No correlation was observed between ECG changes and side/size of pneumothorax. It is important to rule out pneumothorax among children presented with chest pain, dyspnea and ECG changes.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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