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How Could Hypertension Affect Cardiac Output
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 to become weak so that it does not squeeze or contract as forcefully. These are called diastolic dysfunction (too thick) or systolic dysfunction (weak and flabby). ...Read moreSee 1 more doctor answer
A blood pressure reading has two numbers: a systolic blood pressure and a diastolic blood pressure. The systolic blood pressure is the maximum pressure the blood exerts on the vessels when the heart is beating. The diastolic blood pressure is the pressure the blood exerts on the vessels in between heartbeats. Hypertension, or high blood pressure, begins when the systolic blood pressure remains above 140 or when the diastolic blood pressure remains above 90. Hypertension can be a result of increased blood flow through vessels or increased resistance to ...Read more
It doesn't: Hypertension increases a parameter known as after load (the obstacle the heart is working against). All other things being equal, high blood pressure produces less volume of blood pumped with each heartbeat for any given amount of work by the heart. The heart thus increases how hard it is working with each beat which is one of the ways in which heart damage results from hypertension. ...Read moreSee 1 more doctor answer
Complicated.: It is an indirect relationship. Hypertension over time can lead to changes in the heart muscle and heart function. It may eventually lead to heart failure. When this ensues the output of the heart can eventually decline and cause serious symptoms. In the earlier stages if hypertension cardiac output actually goes up. ...Read moreSee 1 more doctor answer
Hypertension: High blood pressure usually implies an increased peripheral vascular resistance for a time the heart can keep up with the resistance late in the course the heart begins to not be able to generate the stroke volume against the resistance and cardiac output may fall. If abnormal ventricular function is present, cardiac output may fall earlier. ...Read moreSee 1 more doctor answer
Mathematical: The relationship can be expressed as a variant of darcy' law; flow (q) = pressure/resistance. In the human circulatory system: q = (map – rap)/tpr (map = mean aortic (or arterial) blood pressure in mmhg, RAP = mean right atrial pressure in mmhg and tpr = total peripheral resistance in dynes-sec-cm-5.) however, as map>>rap, , this can be simplified to: q~map/tpr. Map is obviously affected by htn. ...Read moreSee 1 more doctor answer
Heart failure: Long-standing hypertension (or high blood pressure) leads to left ventricular hypertrophy, and if untreated, can eventually lead to congestive heart failure and decreased cardiac output. Hypertension is also a risk factor for stroke and coronary artery disease (another potential etiology for decreased cardiac output). ...Read more
Something else: Nocturnal HTN or failure to have a "nocturnal dip" in BP signifies that BP elevation is due to something other than just garden variety essential htn. Such findings should prompt a search for the usual suspects - alcohol or drug use, renal artery stenosis, hyperaldosteronism, pheochromocytoma, obstructive sleep apnea, etc. ...Read more
I have pre hypertension, overweight, high cholesterol at 27. What is the liklihood of cardiac problems..
Not now: But if you want to avoid problems in the future, you better start serious lifestyle changes, particularly when it comes to diet and exercise. You will not be able to be in better shape or to loose weight until you take this seriously and start a consistent exercise program. THIS IS THE TIME TO START!!!!(assuming your doctor has cleared you to do it) You can do it (and need to) ...Read moreSee 1 more doctor answer
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