Several causes: Presyncope which is the sensation that you might faint but actually do not lose consciousness. This sensation could be due to rapid changes in position like standing up. It may be due to low blood pressure due to diuretics or other meds. A change in heart rhythm (too slow or too fast) can also cause this feeling. Less commonly very poor pumping power can cause this sensation.
Answered 6/20/2014
6.3k views
Heart failure and sy: The drugs used to treat heart failure may encourage pooling of blood causing presyncope or syncope specially on changing the posture.
Answered 11/24/2014
5.4k views
A doctor has provided 1 answer
6 doctors weighed in across 3 answers
2 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question