The influence of time on the accuracy of healthcare personnel to diagnose paediatric cardiac arrest by pulse palpation |
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Authors: | James Tibballs Cyveen Weeranatna |
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Affiliation: | a Royal Children's Hospital, Melbourne, Australia b Departments of Paediatrics & Pharmacology, The University of Melbourne and Murdoch Children's Institute, Australia c Intensive Care Unit, Royal Children's Hospital, Flemington Road, Parkville, Melbourne, Victoria 3052, Australia |
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Abstract: | AimTo determine time and accuracy diagnosing paediatric cardiac arrest (CA) by pulse palpation.Materials and methodsBlinded rescuers (82 nurses, 71 doctors) palpated for a brachial pulse in 17 children (1 day-11 years) with non-pulsatile extracorporeal circulation for CA or cardiac failure. Timed rescuer decisions (pulse present/absent) were compared with non-blinded investigator decisions.ResultsCA on 55 occasions was diagnosed by 42 (76%) rescuers in mean (±SD) time 30 ± 19 s. Experienced rescuers diagnosed CA in 25 ± 14 s, inexperienced rescuers in 37 ± 24 s (p = 0.042). CA absent on 98 occasions was confirmed by 77 (79%) rescuers in 13 ± 13 s. Experienced rescuers confirmed absent CA in 9 ± 5 s, inexperienced rescuers in 21 ± 19 s (p = 0.0001). Diagnosis of CA compared to confirmation of absence took longer by all rescuers (p < 0.0001), experienced rescuers (p < 0.0001) and inexperienced rescuers (p = 0.018). Twenty-eight of 33 (85%) experienced doctors diagnosed CA or confirmed absence in 13 ± 9 s, 49 of 61 (80%) experienced nurses in 15 ± 12 s, 11 of 21 (52%) inexperienced nurses in 18 ± 15 s and 31 of 38 (82%) inexperienced doctors in 30 ± 24 s. Overall accuracy was 78% (95%CI 71-84%), sensitivity 0.76 (95%CI 0.64-0.86) and specificity 0.79 (95%CI 0.69-0.86). Experienced doctors were 85% accurate, inexperienced doctors 82%, experienced nurses 80%, inexperienced nurses 52%. Rescuers diagnosing quickly (<10 s) had 90% accuracy, in 11-20 s 77% accuracy and in 21-30 s 62.5% accuracy (p = 0.015).ConclusionsDiagnosis of cardiac arrest by pulse palpation alone is unreliable. At least 30 s is required but accuracy and speed are related to clinical experience. |
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Keywords: | Cardiac arrest Diagnosis Paediatrics Time Pulse palpation |
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