CPR (cardiopulmonary resuscitation) is indicated in those who are unresponsive with no breathing or only gasps.
How does ventricular fibrillation occur? What are the causes?
Ventricular fibrillation (VF) is an uncontrolled twitching or quivering of the muscle fibers of the lower chambers of your heart. During ventricular fibrillation, blood is no longer pumped out of your heart.
Can Beta blockers cause shortness of breath?
Yes. Beta (β) blockers stop the action of epinephrine (adrenaline) and norepinephrine (noradrenaline) on your lungs. Adrenaline helps to relax the small airways of your lungs and make breathing easier. With adrenaline blocked, you may experience symptoms similar to asthma, such as wheezing and trouble breathing.