A fixed-run taxi passenger has a sudden and expressed attack of tachycardia. A doctor travelling by the same taxi has managed to slow down his heart rate by pressing upon the eyeballs and thus causing the following reflex:

Answer options

1. Holtz’s reflex
2. Hering-Breuer reflex
3. Dagnini-Aschner reflex
4. Frank-Starling mechanism
5. Bainbridge reflex

Explanation

Dagnini-Aschner reflex; Slowing of the heart rate after pressure is applied to the eye or the carotid sinus. It was formerly used to slow the heart in patients with supraventricular tachycardia or angina pectoris.