Questions tagged [heart]

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18 views

Is chronic fatigue syndrome a symptom of myocarditis?

In the past few weeks I've seen news that Covid-19 infection is often followed by myocarditis or effects similar to chronic fatigue syndrome (though it is simply too soon to call it CFS). Because both ...
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How to differentiate Split S2 from Mitral valve prolapse murmur?

If history is not available or doesn't gives a clue about the pathology, is it still possible to tell whether it is MVP or Split S2 due to pulmonary valve problems? Both split S2 and MVP's murmur( the ...
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1answer
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How can I take blood pressure into the cardiac output formula?

I wanted to know if there is some kind of formula that can help me calculate the cardiac output. So, lets say we have a standing person. The StrokVolume should be around 100 cm2 for the average adult, ...
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1answer
53 views

Why do semilunar valves not need tendinae but atrioventricular valves do?

Inside the heart the atrioventricular valves (AV) have chordae tendineae to prevent the backflow of blood into the atrium when the ventricle contracts. Since the AV and semilunar valves are ...
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1answer
42 views

Myocardial Ischemic Contractile Failure & Potassium

From my understanding of myocardial ischemic contractile failure, ischemia causes increased extracellular K+ concentration due to the ATP-sensitive K+ channels opening (as they need ATP to stay closed)...
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1answer
29 views

Why squatting leads to decrease in MVP murmur

Mvp = mitral valve prolapse Hcm = hypertrophic cardiomyopathy Now, I understand that during squatting preload and afterload will increase and both of them would lead to increased LV volume, but how ...
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21 views

What are the bio-molecular reasons that makes some people's hearts more reactive to adrenaline that they get palpitation when it rises?

Epinephrine, more commonly known as adrenaline, is a hormone secreted by the medulla of the adrenal glands. Strong emotions such as fear or anger cause epinephrine to be released into the ...
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14 views

What would the graph look like if the electrodes were non-equidistant from the depolarization wave?

Hypothetically speaking using the diagram above. If the negative electrode was very far away from this cardiomyocyte and the positive electrode was right next to it. What would the voltage graph look ...
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18 views

Difference in heart muscle tissue growth (cardio vs low-rep intense weight lifting)

Below is a quote from a subreddit that says: I haven't kept up on the research, but the last thing I read back in college looked at weight lifters and long distance runners. Both types had larger ...
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1answer
37 views

Positive deflection of an ECG

I understand that the voltage will be positive as measured by the ECG but I was wondering why the voltage reaches a maximum exactly at the midpoint. Is there a physiological reason (like sodium ...
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1answer
65 views

Should I drink coconut water daily? Many sites praise the health effect

Example article found with DDG: 8 Science-Based Health Benefits of Coconut Water The Bottom Line Coconut water is a delicious, nutritious and natural beverage that’s extremely good for you. ...
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35 views

What is Pulse Wave Velocity, any benefit in measuring it?

Some health products (e.g. smart scales) boast that they measure the heart's Pulse Wave Velocity. Is there any benefit in monitoring this parameter and trying to "improve" it via training/eating?
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50 views

Is Myocarditis infectious?

How can Myocarditis spread from a person who has it? Is touching a person who died of Myocarditis dangerous?
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156 views

Difference between hypovolemic shock and heart arrest caused by hypovolemia?

Is there a difference between hypovolemic shock and heart arrest caused by hypovolemia ?
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1answer
713 views

Why is the crescendo-decrescendo systolic murmur best heard at the cardiac base?

I'm writing a paper and came across a very specific question about heart sounds. Why is the crescendo-decrescendo systolic murmur best heard at the cardiac base? and why does it radiate to carotids? ...
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2answers
153 views

Does eating fish help high blood pressure?

The common advice for people who have been diagnosed with heart problems like hypertension is "eat more fish, especially salmon." I've done a great deal of Googling and what I can't seem to figure out ...
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40 views

Intra-atrial thrombosis epidemiology

I have searched without much luck about this question: What are the epidemiological data about intra-atrial thrombosis? All I’ve found are epidemiological data about benign and malign tumors, but I ...
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1answer
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When is too much running bad for your health?

In this ted talk, cardiologist James O'Keefe argues that intensive running is bad for your heart. This conclusion is pretty alarming to me, and counter to what I have always thought. Is there a ...
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1answer
69 views

Medical procedure to sever the brain's ability to communicate with the heart?

So, I think I read some-where that there is a surgical procedure to server the heart's ability to communicate with the brain, for reasons. A negative consequence of this was not being able to, for ...
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2answers
72 views

Why heart beats normal after AED?

I know that heart attack is when some of cells are dead. That's why heart beats abnormally and needs AED to stop it and restart. After that it beats again normally and my question is - how come since ...
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40 views

Normal Sleeping Heart Rate Range

I recently got a heart rate tracker and I've noticed that when I sleep my heart rate consistently spikes fairly high. It has reached 165 bpm before, but most times it's under 150. That seems a bit ...
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1answer
71 views

adequate exposure of the surgical field

What is meant by "adequate exposure of the surgical field" is this sentence: During cardiac surgery, it is necessary to aspirate blood from the cardiac chambers to provide adequate exposure of the ...
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1answer
160 views

What happens to the heart during cardiac arrest?

I am confused about whether the heart stops beating during cardiac arrest or not. The answer in this question states, "the heart does not pump blood sufficiently to sustain life." Isn't that the ...
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53 views

Are eggs good for heart health or bad? [duplicate]

I am finding two completely contradicting posts while googling regarding health risks to the heart for excess consumption of eggs: https://www.health.harvard.edu/heart-health/are-eggs-risky-for-heart-...
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1answer
225 views

Should people with tachycardia avoid caffeine?

Well, caffeine increases the resting heart rate. If the resting heart rate of a person with tachycardia is 110 bpm, it may increase to 125 bpm after consuming 200 mg caffeine. My questions: Is having ...
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3answers
195 views

What will happen if you keep running? What will eventually cause you to stop?

A more specific form of my question would be, "Barring mental barriers, what will lead to collapse after extended cardiovascular exercise?" I was considering asking this in the worldbuilding SE, but ...
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1answer
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Can too much potassium from sports drinks be dangerous/lethal?

I have always been aware that sports drinks help you replace potassium lost from exercise. But I also know that too much potassium in your bloodstream is not a good thing and bad for your heart. So ...
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25 views

What is the most advanced non-invasive technology these days for identifying clogged arteries?

What is the most advanced non-invasive technology these days for identifying clogged arteries?
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Are two cups of nescafe a day good for my health?

I drink 2 cups of Nescafe every day. 8 a.m. first cup and 12 p.m. another cup. I drink this kind of Nescafe and add with a spoon of condensed milk, not the 3 in 1. Is this habit good for my health (...
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2answers
301 views

Is it possible for the lungs and heart to work independently of one another?

I understand that the lungs take in oxygen, pass it to the heart to send throughout the body, and receive CO2 from cellular respiration that the lungs then breathe out. (Oversimplified, I know, but ...
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1answer
43 views

How long a phonocardiography (PCG) should be for diagnosis?

I have many PCG records with different lengths, what is the minimum length (minutes or seconds) that a specialist use to diagnose any abnormalities in heart? Highly appreciate your help. Cheers
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1answer
22 views

Does physical stress on vagaus nerve cause depression?

I usually suffer from palpitations due to stimulation of vagus nerve from gastric problems and sitting/lying posture. Recently I've been experiencing some abnormal mental stress patterns such as slow ...
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2answers
31 views

Isolating blood vessels and vasculature of the heart?

Is there a chemical or process that would dissolve or remove all other tissues in an organ (in my case, i would like a heart) and leave all the vasculature and blood vessels intact?
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96 views

What benefits for more EKG leads?

It seems that the 12-lead EKG is the gold standard for diagnosing many heart problems, but they're limited to fairly short samples (e.g. 30 minutes). Its possible to send a patient home for several ...
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1answer
43 views

Heartbeat pulse strength vs Alcohol

Recently the elevator got broken at my place and it's been a few days of using stairs. I live on the 5th floor. I noticed.. actually I didn't notice anything when going up and down the stairs during ...
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27 views

How about afterwork jogging after drinking a lot of caffee?

I drink many caffee in a workday to boost my work performance (normally 3-4 cups of middle strong arabica). After work, I would like to do some jogging (maybe around 5 km) to boost my health. Isn't ...
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1answer
40 views

I'm OK with chilis and any kind of oil. But I can't take any chili oil. Why?

I started eating Asian food rather frequently about 3 years ago. I like hot and spicy dishes. I have no problem eating for example a Vietnamese Pho with lots of chilis in it. Also, I love to prepare ...
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1answer
115 views

Why is there a left ventricular volume overload in patients with Ventricular septal defect?

With VSD left to right shunt in systole logically should dilate right ventricle due to volume overload since left side pressure is higher then the right.
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2answers
316 views

Which cardiac chambers are enlarged in ventricular septal defect?

I was wondering if it's left to right shunt that would make it a volume overload condition in the right side of the heart and thus dilation but also considering that maybe left chambers are also ...
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1answer
724 views

Can pectus excavatum increase the risk of cardio vascular disease?

With Pectus Excavatum the sternum is sunken inwards pushing organs slightly out of their normal position. My question is could this repositioning put additional pressure on the heart over time leading ...
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2answers
247 views

What is the best cooking oil for a person with ischemic heart disease?

My grandmother has atherosclerosis and suffers from cardiovascular disease (ischemic heart disease and cerebrovascular disease). The doctor recommended her not to eat butter or ghee. Which type of ...
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1answer
159 views

What is the effect of energy drinks on the heart?

I was watching a Youtube video of a man who supposedly drank 20 energy drinks in a row. It appears that his heart enlarged greatly. Is this something that energy drinks could actually do?