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We described a case of 4Â four month old infant came to our Emergency department with Supraventricular Tachycardia
Supraventricular tachycardia is a life threatening condition where the heart beat exceed 150/min with abnormal rhythm arise from improper electrical activity of the heart.It is a rapid heart rhythm originated from or above the atrioventricular node. This is a case of SVT in a 4 four month old baby boy with no medical illness who has presented to us with rapid breathing and fever. The infant has high grade fever with core body temperature of 40 degree celcius and pulse rate 240/min, BP:99/47, tachypnoiec with respiratory rate 58 /min. The otherwise hydration was fair, with tears formation upon crying and having moist mucus membrance, lungs were clear, equal air entry and the abdomen was soft and nontender. The infant was promptly triaged to Red Zone and cardiac monitoring was done. The cardiac rhythm was analysed and noted to have supraventricular tachycardia. Steps were taken to revert the SVT to sinus rhythm using IV adenosine x3 via axillary venous access however but failed to revert cardiac rhythm. At the same time the infant was given bolus NS to improve hydration status and suppository antipyretic (which was also given by the mother at home prior to presentation to the hospital). However, the infant condition remained same. Tepid sponging was done with ice water with close monitoring to prevent hypothermia. Surprisingly despite IV adenosine x 3 , child cardiac rhythm was only reverted to sinus rhythm after tepid sponging with iced water. Child was managed together with the paediatric team and subsequently transferred to paediatric ward and was treated as SVT secondary to presumed sepsis. In the ward other blood investigations revealed TSH and T4 level, electrolytes, CKMB and LDH were all normal. The hemoglobin level was 10.2g/dL. The echocardiography by the paediatric team revealed a small PFO patent foramen ovale. Child was discharged well after 3 days of hospitalisation.
Supraventricular tachycardia in a 4 months old infant is a rare and life threatening condition. As the child presented with high grade fever and rapid heart beat, it is necessary to reduce the core body temperature of child as one of the measurements to revert to sinus rhythm. Tepid sponging with ice water was a more accessible compared to conventional IV adenosine/ propanolol/ lignocaine. Message for doctors in distant district areas , it will be more convenient to manage patient with Ice Bucket challenge with close core temperature monitoring while transferring them to tertiary centres. This will be our second case of supraventricular tachycardia in paediatric population which cardiac rhythm been reverted to sinus rhythm using ice water- Ice Bucket Challenge method.
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