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How could vasoconstriction affect cardiac output

A 44-year-old member asked:
Dr. Mark Stern
Cardiology 47 years experience
It lowers it: Vasoconstriction increases the resistance to flow. This is called an afterload. It is like a pump having to pump water up a steep hill; it won't pump ... Read More
Dr. Bennett Werner
Cardiology 45 years experience
Academic question: Total peripheral resistance (as measured in the cardiac catheterization laboratory) is inversely proportional to cardiac output.
A 26-year-old male asked:
Dr. Frank Kuitems
Internal Medicine 37 years experience
Yes : Yes you can call spasm of the corner arteries avoid this with significant coronary disease.
A 23-year-old male asked:
Dr. David Krulak
Family Medicine 24 years experience
Vasoconstriction: Cigarettes are associated with coronary artery vasoconstriction. This constriction could cause angina if combined with exercise in some people, but i... Read More
Dr. Michael Gabor
Diagnostic Radiology 34 years experience
Smoking does: increase the risk of an acute cardiac event, because it is a vasoconstrictor and it causes blood to be more coagulable, among other reasons. Because i... Read More
A 24-year-old male asked:
Dr. Herman Hammerstead
A Verified Doctoranswered
Trauma Surgery 51 years experience
Not necessarily so: Here's an article witch will answer most of your questions: http://content.onlinejacc.org/article.aspx?articleid=1121737 Just like the body can't ove... Read More
A 34-year-old member asked:
Dr. Jerry Routh
Internal Medicine 47 years experience
Low blood pressure: Cardiac output is related to the heart rate, and volume of blood the heart can pump with each heart beat. A low cardiac output occurs when the pump f... Read More
A 36-year-old member asked:
Dr. Frederick Tibayan
Thoracic Surgery 24 years experience
Increase O2 delivery: During exercise, the muscles burn more oxygen for fuel. Increasing cardiac output increases the amount of oxygen carried by the blood to the tissues.
A 30-year-old member asked:
Dr. Louis Grenzer
Cardiology 56 years experience
Two ways: It can cause the heart muscle to get thick and stiff so that it does not relax and fill up with blood properly. It could also cause the heart muscle t... Read More
A 41-year-old member asked:
Dr. Frederick Tibayan
Thoracic Surgery 24 years experience
Cardiac output: is stroke volume times heart rate. if stroke volume goes down more than heart rate goes up, cardiac output won't increase. stroke volume depends on pr... Read More
A 26-year-old member asked:
Dr. Susan Wingo
Endocrinology 34 years experience
Usually increases it: Cardiac output describes the amount of blood pumped through the heart in 1 minute. Two effects of high thyroid levels are an increased heart rate (mo... Read More
A 23-year-old member asked:
Dr. Bart Denys
Cardiology 40 years experience
Cardiac output: Basically an increase in demand for oxygen by the body. This may be physiological (exercise) or pathological (sepsis - infection - fever) or increased... Read More