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Innocent murmurs in childhood are common, and often they do not reflect cardiac disease. We have performed a prospective review, by means of a questionnaire, to clarify the parental perception of the innocent murmur identified in their child. Whenever possible, depending on age, we also sought the input of the child. Of a cohort of 63 infants and children with innocent murmurs, a response was obtained from 40 parents and 8 children to an initial questionnaire, with 26 parents replying to a second questionnaire a year later. No parent reported any symptoms in their children, or had imposed any restrictions. Of the parents, however three sets considered regular review was necessary. We conclude that the diagnosis of an innocent murmur by a paediatric cardiologist, aided by investigations including cross-sectional echocardiography, and an opportunity for explanation and reassurance, led to the child being treated normally.

Innocent murmurs are common in childhood. They require accurate diagnosis to avoid unnecessary anxiety and/or restrictions. With this in mind, we studied prospectively children diagnosed by a paediatric cardiologist as having innocent murmurs to review the necessity of investigations in excluding organic abnormalities. We included 63 children in the study. The majority had the so-called Still's, or musical/vibratory murmur. None had abnormal investigations, suggesting that such investigations are largely superfluous for the purpose of diagnosis in those patients with innocent murmurs seen by a paediatric cardiologist. They are often done, nonetheless, as part of the assessment and/or expectations of the parent or the referring physician.