Doctor insights on:
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 more
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: In a physiologic model, increased blood pressure or "hypertension" or increased "afterload" tends to decrease cardiac output. In a complete animal or human model, there are various reflexes that work to maintain cardiac output in the face of increased afterload but they shouldn't cause an increase in cardiac output relative to the baseline. ...Read more
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 more
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 more
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 more
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 more
I was awakened last night to the sound of my heart beating hard and fast. I have a history of hypertension and am on meds for same but no past cardiac?
Anxiety.: Forceful regular beating heart in the middle of the night suggest that your heart is normal and that you have anxiety. Irregular, weak or very rapid pulse suggest something else. If you can exercise without any symptoms it is unlikely that you have any significant coronary artery or structural heart disease. ...Read more
What health education can be given to a 54 year old male patient with congestive cardiac failure, hypertension and obesity to ensure a long healthy l?
Cardiac Rehab: Some hospitals have cardiac rehabilitation departments like a gym but w/expert advice and supervision. Please see your doc to get a prescription to attend. If not available see doc for advice or for referral to a nutritionist or personal trainer. Peace and good health. ...Read more
I hope that this question isn't too general. Is the treatment for pulmonary hypertension always the same as the usual treatment for cardiac failure? Please elaborate if possible.
What could be the cause of jugular vein distention, hypertension, fast heart rate upon motion with normal cardiac echo, ekg, and thyroid?
92 yrs old female, cardiac hypertrophy, hypertension and renal problem, severe anemic. What are safe iron medication 4 her.??
Depends on cause: Of her anemia. She could have nutritional deficit other than iron deficiency, also occult bleeding, also hemolysis. Even if she really does have iron deficiency anemia alone, she could have absorption problems. Assuming everything else is negative, you can try ferrous sulfate or ferrous gluconate. But get her to a doctor first before you try. ...Read more
Is pulmonary arterial hypertension more of a respiratory or cardiac condition. How can I assist my gp to determine if pah exists.
What does equivocal cardiac stress test mean in the results? I am a 47 year old male with hypertension controlled through medication. I completed the test reaching the target heart rate with no other symptoms. Test was part of an annual insurance check u
Can a doctor on healthtap prescribe a blood pressure monitor for my hypertension and cardiac disease the monitor I have is old from at least five to six years. It is giving me Inaccurate numbers.
BP monitor: I specialize in HBP for over 50 years. I still recommend the one you pump up and listen to with an attached stethoscope. Costs only $20 and much more accurate, if you are instructed how to do it properly and I can do that by video consult. Most important driver of high blood pressure is how much salt you eat. This can be tested with a dipstick we can discuss during a 2nd opinion. ...Read more
Probably not: A cardiac echo/Doppler study would show pulmonary HTN changes by viewing the right ventricular function, size and pressure. There are additonsl studies that can also be done. It is very important to know WHY you have Pulmonary HTN. If due chronic Pulmonary embolism it is a serious situation for which there exists very effective Rx. Other causes can also be treated. Consult your doc. ...Read more
My mother has calcification in her cardiac valve and hypertension, she will have myocardial perfusion scintigraphy with medicine. Is it dangerous?
Stress test: A myocardial perfusion scan tests the blood supply to the heart muscle. A small needle is inserted into a vein but otherwise this is a noninvasive test. If done in a properly equipped and staffed facility it is a very safe test. The risk may be a bit higher if there is severe calcific aortic valve stenosis. ...Read more
Easy one: Coronary artery disease is the build up of atherosclerotic fat plaques in the arteries of the heart. These can partially block blood flow to the heart muscle causing angina or block completely and cause a heart attack. Hypertension is high blood pressure which can be caused by a variety of medical conditions. ...Read more
2 different things.: Hypertension means simply high blood pressure. Blood moving through tight, inflexible pipes (arteries) is under more pressure than more flexible arteries. High blood pressure can lead to a host of diseases such as stroke and coronary artery disease (cad). CAD is clogging of the arteries that directly supply the heart itself which can lead to heart attack. ...Read more
I am a patient of essential hypertension for last 20 years. Had coronary bypass in 1994 and angioplasty (2 stents)). In 2010. My systoic BP reading150?
A behavioral help: For your high BP is cardiologist herbert benson's book, the relaxation response. It is a little meditation that helps calm the fight flight freeze response. Congrats on your good health. Peace and good health sir. ...Read more
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