Comparison of three sites to check the pulse and count heart rate in hypotensive infants

Cardiopulmonary resuscitation; Hypotension; Infant; Pulse checking; Aging; Brachial Artery; Carotid Arteries; Cross-Sectional Studies; Electrocardiography; Female; Femoral Artery; Heart Arrest; Heart Rate; Humans; Hypotension; Infant; Infant, Newborn; Logistic Models; Male; Monitoring, Intraoperative; Palpation; Prospective Studies; Pulse; Anesthesiology and Pain Medicine; Pediatrics, Perinatology and Child Health