35% could bring on their SVT by flexing trunk – a sign they called “sign of lace-tying.”
Ann Noninvasive Electrocardiol. 2018 Jan;23(1). doi: 10.1111/anec.12471.
New insights into the clinical signs of supraventricular tachycardia: The “sign of lace-tying”.
Blommaert D et al
https://www.ncbi.nlm.nih.gov/pubmed/28593735
felt that those with clinical SVT if they complained of tachycardia with bending forward – “the only possible diagnosis is SVT.”
This is not a lethal disease and massaging a carotid artery can help..