Drobatz Text

Question 1

Define syncope

Answer 1

A transient loss of consciousness due to a global cerebral hypoperfusion characterized by rapid onset and short duration, as well as spontaneous complete recovery

Question 2

What is the most common cause of syncope?

Answer 2

Severe heart rhythm disturbances

Question 3

What are the three principle mechanisms that can cause a decrease in cardiac output?

Answer 3

1. Primary heart disease (structural or electrical)
2. Reflex mediated bradycardia or hypotension
3. Decrease in venous return due to blood loss or redistribution of blood volume (orthostatic hypotension)