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Why does a stronger heart cause blood pressure go down

Why does a stronger heart cause blood pressure go down


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Intuitively, why does a stronger heart cause blood pressure to go down? The answers I've found from a cursory google search seem to indicate that it has to "work less hard" to pump the blood and that it "beats more slowly," but I do not immediately understand the implications of this.

Furthermore, if it is due to a slower heart beat in a stronger heart that blood pressure is lower, then how does (/is it true that) blood pressure remains lower in those with a stronger heart during exercise? Wouldn't a stronger heart beating just as fast as a weaker heart lead to higher blood pressure?

Thanks for any help. :)


Heart Palpatations from Blood Pressure Medications.

Q: I have been taking 50 mgs of atenolol for years plus Losartan/hctz.. 100mgs-25mg 1tab daily..I have heart palpitations now. I am very concerned. Do my blood pressure medications cause heart palpitations?

A: The blood pressure medicine losartan (Cozaar) can cause heart palpitations and other forms of an irregular heartbeat. The most common irregular heartbeat is atrial fibrillation. To learn more about this condition go to this page on the National Heart Lung and Blood Institute site.

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9 Comments

I absolutely agree they can either cause palpitations or cause them to be felt more. I used to suffer from PVC (premature ventricular contractions) and atenelol caused me to feel them more. What happens is since the heart slows down it allows the lower ventricals to fill up more with blood before pumping. When a larger volume of blood is expelled with each heart beat the PVC is felt more. I hope this helps.

I take 100 mg of atenolol in the am and in the pm with benecar, I agree, the atenolol gives me strong heart beats that I can actually feel. I usually get up from bed and sit up and do something to try and not concentrate on them and they go back to normal within 15 minutes. It does scare you.

Hi,
I have been taking this BP medicine Amlodopine 2,5mg and Losarton 25 mg for a long time. But I am taking Amlodopine 2.5mg and neurobeon after breakfast like
Oats/Dosha/Idali/ and Losortan Pottassium 23 mg in the night, it will not get you any guddiness in the night and it will stimulate your sleep also. I am quiet O.K. My B.P is normal.

Odd. Atenolol was prescribed for me for exactly that reason. To prevent the pvc’s. I’ve managed to lower the dosage over time but can’t seem to lose the last 25mg because when I try the pvc’s return along with chest discomfort.

I take (once daily) Atenolol (30 years)- 50mg and since it is a beta blocker it tends to stop/reduce my arrythmias. I have endured PVCs (68 years) and two spells of atrial fibrillation during this time (continuously irregular, force contraction of heartbeat) . I am 77 years of age so my life is almost over….I used to get anxiety/panic spells from the arrythmias, but now I realize that my advancing age will take care of the problem permanently! Also high blood pressure will often contribute to the number of arrythmias -indicator of when BP is high (for me). Fortunately I have low platelets (sp) so don’t need/shouldn’t)need to take aspirin.
Thanks for a great BB.
Jim

James, I also have low platelets but don’t know what this means. I asked the doctor and he said nothing. I would assume this is a good thing as more platelets would imply blood would clot more readily increasing MI or stroke risk. I also have low cholesterol, probably another good omen.

I have had pvcs off and on since my 20s. I was given atenolol years ago for this and hypertension. I took it for years and then had something else added, and now down to one now isradipine. However, my HR never got back to normal in that I have bradycardia (slow HR) so much so that my doctor says I have sick sinus syndrome. I exercise regularly and sometimes intensively (for my age of 70). That could cause a lower HR. But could the BP medication have caused the slow HR over the years to continue? It runs in the 50s and 40s with an occasional 39. I do notice feeling it more when it is lower.


Blood Pressure

Blood pressure is the pressure of blood against the blood vessel walls during the cardiac cycle it is influenced by a variety of factors.

Learning Objectives

Describe the process of blood pressure regulation

Key Takeaways

Key Points

  • Normal blood pressure for a healthy adult is 120 mm Hg during systole (peak pressure in the arteries ) and 80 mm Hg during diastole (the resting phase).
  • Blood pressure is regulated in the body by changes to the diameters of blood vessels in response to changes in the cardiac output and stroke volume.
  • Factors such as stress, nutrition, drugs, exercise, or disease can invoke changes in the diameters of the blood vessels, altering blood pressure.

Key Terms

  • cardiac output: the volume of blood being pumped by the heart, in particular by a left or right ventricle in the time interval of one minute
  • hydrostatic: of or relating to fluids, especially to the pressure that they exert or transmit
  • stroke volume: the volume of blood pumped from one ventricle of the heart with each beat

Blood Pressure

Blood pressure is the pressure of the fluid (blood) against the walls of the blood vessels. Fluid will move from areas of high to low hydrostatic pressures. In the arteries, the hydrostatic pressure near the heart is very high. Blood flows to the arterioles (smaller arteries) where the rate of flow is slowed by the narrow openings of the arterioles. The systolic pressure is defined as the peak pressure in the arteries during the cardiac cycle the diastolic pressure is the lowest pressure at the resting phase of the cardiac cycle. During systole, when new blood is entering the arteries, the artery walls stretch to accommodate the increase of pressure of the extra blood. During diastole, the walls return to normal because of their elastic properties.

Blood pressure values are universally stated in millimeters of mercury (mm Hg). The blood pressure of the systole phase and the diastole phase gives the two readings for blood pressure. For example, the typical value for a resting, healthy adult is 120/80, which indicates a reading of 120 mm Hg during the systole and 80 mm Hg during diastole.

Relationship between blood pressure and velocity: Blood pressure is related to the blood velocity in the arteries and arterioles. In the capillaries and veins, the blood pressure continues to decease, but velocity increases.

Blood Pressure Regulation

Throughout the cardiac cycle, the blood continues to empty into the arterioles at a relatively even rate. However, these measures of blood pressure are not static they undergo natural variations from one heartbeat to another and throughout the day. The measures of blood pressure also change in response to stress, nutritional factors, drugs, or disease. The body regulates blood pressure by changes in response to the cardiac output and stroke volume.

Cardiac output is the volume of blood pumped by the heart in one minute. It is calculated by multiplying the number of heart contractions that occur per minute (heart rate) times the stroke volume (the volume of blood pumped into the aorta per contraction of the left ventricle). Therefore, cardiac output can be increased by increasing heart rate, as when exercising. However, cardiac output can also be increased by increasing stroke volume, such as if the heart were to contract with greater strength. Stroke volume can also be increased by speeding blood circulation through the body so that more blood enters the heart between contractions. During heavy exertion, the blood vessels relax and increase in diameter, offsetting the increased heart rate and ensuring adequate oxygenated blood gets to the muscles. Stress triggers a decrease in the diameter of the blood vessels, consequently increasing blood pressure. These changes can also be caused by nerve signals or hormones even standing up or lying down can have a great effect on blood pressure.


Diagnosis and Tests

How is resistant hypertension diagnosed?

To make a diagnosis of resistant hypertension, your healthcare provider may:

Get a detailed history and physical exam. In a detailed history your provider may ask when your high blood pressure began and how long it’s been going on current drugs you take (including herbal medications) and if you take them as prescribed and questions about possible secondary causes of your uncontrolled hypertension.

The physical exam will look for abnormal changes in the eye (a condition called hypertensive retinopathy), and abnormal sounds called bruits (vascular murmur) over some major arteries. These bruits may signal abnormal deposits of fatty tissue, also called plaques, in these blood vessels.

Order laboratory tests. These may include a urine test for protein or albumin blood tests for glucose, electrolytes such as sodium and potassium and the blood creatinine level. A blood test may be done for adrenal hormones, to screen for possible disease in the adrenal glands. In addition, since hypothyroidism can contribute to high blood pressure, you may also be tested for thyroid disease.

Order imaging studies. X-rays, ultrasound and CT scans and other tests may be ordered depending on other conditions your provider may need to rule out. For example, imaging tests of the kidneys may be done to rule out abnormal blockage of the arteries to the kidneys (renal artery stenosis).

Order tests for sleeping disorders. You may be asked to undergo a sleep study to check for sleep apnea.


Ask the doctor: Does heart rate affect blood pressure?

Q. When doctors interpret a blood pressure reading, should they also consider the heart rate? I am a 78-year-old man and have had high blood pressure (under control) for more than 40 years. I frequently monitor my blood pressure at home, resting for five minutes before I take the reading. My blood pressure is often higher when my heart rate is close to its usual resting rate (about 50 beats per minute) and lower when my heart is beating faster than that. Can the body's demands that cause higher blood pressure be partially satisfied by a faster heart rate?

A. First, let me congratulate you on monitoring your blood pressure at home. This is a great way for you to take control of your high blood pressure, and a good step toward preventing a stroke. Knowing that your blood pressure at home is under consistent control is more important than getting isolated readings at the doctor's office. You are also resting before taking the reading, and this is important to avoid spuriously high readings that happen when someone rushes around, and then sits down quickly to take a blood pressure reading. (Readers interested in monitoring their blood pressure at home can watch a video of how this is done at /128.)

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BP Medicines May Affect Sexual Function And Take The Fun Out Of Masturbation

Besides the impact high blood pressure has on sexual function, sometimes the very treatment for hypertension may worsen things for you. Many antihypertensive drugs are known to cause impairment of sexual function including erectile function. 10

If you find it hard to have or sustain an erection, it can make masturbation a rather frustrating and unsatisfying experience. The good news is your doctor may be able to get around these side effects by including phosphodiesterase-5 inhibitors to counteract the effect of the drugs or switching you to angiotensin receptor blockers. The latter doesn’t have the negative effects on sexual function that some older antihypertensive drugs have. 11


Why Blood Pressure Medication Often Raises Blood Pressure

The inability of the medical profession to actually think about what they are doing when they prescribe medications is highlighted by a new study warning that much of the blood pressure medication given may actually be making blood pressure worse. This is what happens in a society wherein high-priced Big Pharma drugs are pushed on patients regardless of their lack of results and likelihood of worsening health. Administering this barbaric form of snake-oil sales is the modern medical doctor. This Western-medicine drug pusher is focused on changing numbers and symptoms with almost no consideration at all for what they are actually doing to their patient. American taxpayers are paying dearly for this gross incompetence.

Virtually all of the new type of commonly prescribed blood pressure medications (calcium channel blockers, beta blockers, ACE inhibitors) have the net effect of short-circuiting the function of your kidneys to drive down blood pressure. Your kidney&rsquos make an enzyme called renin, which intentionally and quite naturally causes your blood pressure to rise so as to maintain proper fluid volume in your body. Medical doctors automatically assume, based on the Big Pharma training they receive from the purveyors of blood pressure snake oil, that this system automatically needs to be blunted in any person with high blood pressure.

A new study explains that many people with high blood pressure 1 actually have low renin function resulting in high blood pressure and that giving these medications makes them worse &ndash even further elevating their high blood pressure. Doctors don&rsquot measure for renin levels partly because the test is expensive and partly because they don&rsquot really want to know. Since renin function is often low in individuals who consume too much salt or are diabetic, the numbers of individuals being recklessly injured by the standard practice of medicine is substantial.

Underlying this significant competence problem is the fact that doctors think changing a blood pressure number has somehow produced health &ndash which is seldom the case with any blood pressure medication even when it lowers blood pressure. The renin system of your kidneys is vital to maintaining fluid balance and blood volume. If the system is stressed and that is resulting in high blood pressure then most people would agree that a health professional should seek to figure out what is punching the system in the nose, not just focus on the bloody nose.

It has been known for almost four decades that dysfunction of the sodium/potassium pump 2 at cell membranes is causing the depression of renin function in the kidneys. This problem can be corrected by reducing sodium intake and increasing potassium intake. Magnesium is also a co-factor in the function of this pump and needed for it to work. Thus, increasing potassium and magnesium intake can directly improve the source of the problem and should really be the first line effort of any person with elevating blood pressure. There is no profit for Big Pharma in such an easily solvable problem.

Another new study explains that the traditional risk factors for heart disease 3 are not all that important compared to circulatory inflammation and the effects it has on your body, including the induced dysfunction to your kidney&rsquos and their renin system. In other words, Western medicine&rsquos theories that promote drug sales are not basic health truths and exist primarily for the sales of drugs and not for your health.


Complex Issues

However, some people may have explored these simpler causes and made some dietary and lifestyle changes. After making improvements they still experience issues and wonder, "Why do I still get heart palpitations when I lay down even after I've changed these factors?"

In some cases, heart flutters may signal more serious health conditions. They can mimic other conditions, but the cause may be complex underlying conditions requiring more thorough testing.

For example, a rapid heartbeat may be due to arrhythmia, which can be a symptom of heart disease. At times arrhythmia is harmless and will lead to no other symptoms or concerns however, some patients will suffer serious side effects. It is important to speak to cardiology specialists if you are concerned about your heart.

Experiencing a rapid heartbeat may signal more serious issues. It may be an indicator of a heart defect or cardiac arrest. The American Academy of Family Physicians warns it may be a sign of sinus tachycardia, premature ventricular contractions, atrial fibrillation or ventricular tachycardia.

These are all serious heart conditions that require testing, at times invasive, to determine the true cause. Only a doctor can diagnose you conclusively with one of these conditions.


Heart rate and blood pressure do not necessarily increase at the same rate. A rising heart rate does not cause your blood pressure to increase at the same rate. Even though your heart is beating more times a minute, healthy blood vessels dilate (get larger) to allow more blood to flow through more easily. When you exercise, your heart speeds up so more blood can reach your muscles. It may be possible for your heart rate to double safely, while your blood pressure may respond by only increasing a modest amount.

In discussions about high blood pressure, you will often see heart rate mentioned in relation to exercise. Your target heart rate is based on age and can help you monitor the intensity of your exercise.

  • If you measure your heart rate (take your pulse) before, during and after physical activity, you&rsquoll notice it will increase over the course of the exercise.
  • The greater the intensity of the exercise, the more your heart rate will increase.
  • When you stop exercising, your heart rate does not immediately return to your normal (resting) heart rate.
  • The more fit you are, the sooner your heart rate will return to normal.

Written by American Heart Association editorial staff and reviewed by science and medicine advisers. See our editorial policies and staff.


Watch the video: 15 μυστικά της αρτηριακής πίεσης (June 2022).


Comments:

  1. Toussaint

    And well, and well, it is not necessary to speak so.

  2. Tojind

    I will know, thank you for your help in this matter.

  3. Atlas

    is absolutely in agreement with the previous communication

  4. Mezilkis

    What a phrase ... super, great idea

  5. Ejnar

    Brilliant idea and it is timely



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