Pædiatric SVT
Report:
Orthodromic atrioventricular re-entrant tachycardia 333/min
Possible flutter with 1:1 conduction
Left bundle branch block
?Wolff-Parkinson-White syndrome ( see below)
Comment:
The rate is very fast, but an infant’s flutter can be much faster still. In sinus rhythm, the patient has δ waves diagnostic of type ‘B’ preexcitation (115a). This is why I think this is an SVT: flutter would be faster still and would be more likely conducted down the anomalous pathway. The QRS would not look like common or garden LBBB aberrancy. Also (and this is cheating!) I know that the paroxysm was terminated by immersing the baby’s head into ice water.
To my knowledge, osteogenesis imperfecta has no known association with Wolff-Parkinson-White syndrome; its only cardiac complication is occasional aortic incompetence.
If you have any suggestions for or feedback on this report, please let us know.
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