[Successful treatment of supraventricular tachycardia with a modified Valsalva manoeuvre].

Supraventricular tachycardia (SVT) is a frequent challenge in medical emergency units. Adenosine, the drug of choice, may cause severe discomfort. The Danish Society of Cardiology's National Treatment Guidelines for SVT recommend first aid treatment with ''vagus stimulation such as carotid massage and Valsalva manoeuvre''. A disadvantage of the Valsalva manoeuvre is that only 5-20% of the patients convert to sinus rhythm. We describe a case story of a patient, who was successfully treated with ''modified Valsalva'' as described in a recently published study wherein 43% of the patients converted to sinus rhythm compared to 17% in the control group.