Questions tagged [cardiology]

the branch of medicine that deals with diseases and abnormalities of the heart.

Filter by
Sorted by
Tagged with
1
vote
0answers
11 views

Bradyarrhythmia & Bradycardia- same or different?

Do Bradyarrhythmia & Bradycardia denote same abnormality or are there some finer differences between the two?? In text provided by my college, it appears bradycardia condition comes under the ...
1
vote
1answer
189 views

Acceptable Macronutrient Distribution Range

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2674146/ I found some papers suggesting AMDR is not the optimum and it is too high on carbohydrates in particular. Is it generally safe to undergo a 27....
2
votes
0answers
89 views

Bulbus aortae is a part of aortic root, then where are the two measurements taken?

I would like to clarify my understanding because anatomy atlases do not provide me an explanation. As far as I know, the aortic bulbus is a part (the widest, the sinuses of Valsalva) of the aortic ...
0
votes
0answers
11 views

Why does LDH-1 peak later than CK-MB in acute myocardial infarction?

As a marker of AMI, different enzymes are used. Creatine Kinase-MB peaks within 24 hrs and returns to normal relatively quickly. Where as LDH-1 peak appears later (~72 hrs) and stays high for a week. ...
-1
votes
1answer
52 views

Could an increase in heart strength result in an increase in systolic blood pressure? [closed]

If someone begins intense cardio training and develops their heart muscle, it seems to me that the increase in volume of blood that the heart can pump with every beat might manifest as a higher ...
1
vote
1answer
53 views

What does primary, secondary and safety outcome of a drug study mean?

I was reading a research article and came across this: We studied 55 outcomes of interest, including both effectiveness and safety endpoints. We divided effectiveness outcomes into three primary ...
2
votes
0answers
22 views

Why can't JVP be measured in a standing or supine position?

While carrying out the jugular venous pressure (JVP) examination, the patient is kept at a 45 degree angle with respect to the ground. Why can't it be measured in a standing or supine position?
1
vote
1answer
43 views

Can I calculate the blood pressure and pulse based on a given blood loss

Is there a function, graph, guideline or rule where I can see how a change in blood volume changes other relevant values? E. g. for every 1% of blood volume lost, heart rate rises 2 beats per minute, ...
6
votes
1answer
88 views

What would happen if you administered endothelin during a myocardial infarction?

I have been going through the Rhodes medical physiology and have learned about Endothelin (specifically its role in hyperplasia) and collateral vessels in slowly developed [cardiovascular disease] (...
1
vote
0answers
14 views

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 ...
0
votes
0answers
7 views

Has a beating heart ever been made using stem cell technology?

Cardiomyocytes (the heart cells that beat) can be generated in a lab. I have seen scientists make beating human heart muscle but not a fully heart. But what about an organoid? A 3D beating heart.
2
votes
1answer
159 views

What heart condition(s) cause tingling and lightheadedness that are NOT caught by an ECG?

Please note: A lot of things cause tingling in the face + extremities ("neuropathy") as well as lightheadedness, but in this question, I'm only interested in potential heart conditions, or anything ...
3
votes
1answer
118 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 ...
0
votes
1answer
26 views

What does NKX2-5 do?

Where is the gene 'NKX2-5' located and what is its function? How is it relevant to developmental disorders?
5
votes
2answers
625 views

Does COVID-19 cause myocardial infarctions?

I heard that NYC hospitals are seeing an increased cases of myocardial infarction with higher mortality than normal during this COVID-19 pandemic. What the connection is between COVID-19 and ...
3
votes
0answers
79 views

40 y/o woman admitted with ARDS but normal values

Second year medical student asking: A 40 year old woman is admitted to the ICU with acute respiratory distress syndrome due to a life threatening case of pneumonia. Her respiratory values are as ...
0
votes
0answers
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 ...
1
vote
0answers
52 views

Should people with tachycardia avoid choline supplements?

After doing some brief research online it appears choline can have an effect on the electrical system of the heart, there are several medical papers online that discuss this topic, however I'm not ...
7
votes
2answers
128 views

Why do we continue compressions after the first AED shock?

I just took a CPR course and was instructed to perform 5 cycles of compressions after an AED shock (after which you wait for the AED to do another analysis). My question is: if the shock was ...
1
vote
2answers
34 views

Can aortic stenosis lead to arrhythmia?

As I understand, Aortic stenosis restricts the blood flow from the left ventricle to the aorta, this restriction should cause a disruption in the pumping of blood. That would cause the heart to beat ...
5
votes
1answer
96 views

Is it possible to calculating HRV from heart rate alone?

I don't have ECG graphs and R-R peaks, but I need to calculate the HRV(heart rate variability). Is it possible to calculate this from the heart rate alone? How reliable would that be?
3
votes
1answer
85 views

When a person is seriously injured, what's the point of CPR?

I have taken CPR training and I have a question about it. Sometimes one reads in the newspaper about a person injured in a car crash or anything tried CPR in vain. I'm asking when a person is ...
1
vote
0answers
26 views

Beginner runner/jogger heart rate question [closed]

I am an it guy 220 lbs 6ft1 35 years old. With chest strap measurement my maximum heart rate is around 192 bpm. (Did warmup and 3 minutes thread mill intervals to measure) For a long period of time, ...
1
vote
1answer
108 views

Do cardiologists learn nutrition as part of their expertise in Cardiology?

Almost all physicians I recognized as suggesting medicinal nutrition either as direct therapy, preventive medicine and via "popular medicine" as with books and articles, were Cardiologists; to a ...
1
vote
0answers
10 views

Why do changes in Effective Refractory Period in Response to Antiarrhytmics occur and how do they help in treating the arrhythmia?

I am having trouble understanding two related concepts. First, why changes in ERP occur when there is the administration of certain antiarrhythmics (eg: Class IC). A neat explanation that I have ...
1
vote
0answers
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 ...
1
vote
1answer
22 views

What is the functional difference between cardio-pulmonary and the baroreceptors in the regulation of Blood pressure?

Guyton mentions two types of receptor- the baroreceptors and the cardiopulmonary receptors- that are involved in the maintenance of the acute changes in blood pressure. I just wanted to know how these ...
9
votes
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?
3
votes
1answer
53 views

What causes a notch in the atrial pressure?

I wanted to know why there is a sort of fluctuation in "E" in the tracing of the atrial pressure right before the mitral valve opens (not the notch because of the Aortic valve closure). Source for ...
7
votes
3answers
772 views

What is the difference between Eisenmenger syndrome and ventricular septal defect?

What is the difference between Eisenmenger syndrome and ventricular septal defect? They are both related to a hole between the two ventricles, right?
2
votes
1answer
327 views

Why patient has to be awake during cardiac catheterization? [closed]

Why couldn't the physicians put the patient under during the procedure?
1
vote
1answer
56 views

Heart Sound Samples

Does anybody have helpful sources/links that are basically recordings and playbacks of heart sounds (normal/ abnormal/ etc.) that I could just listen to while in my spare time? I am looking for ...
3
votes
1answer
162 views

Ventricular diastolic pressure?

So, I have been wondering and couldn't find texts explaining this, but why is the diastolic volume of the circulation ~80, while that of the ventricles is almost 0. To phrase it another way, why does ...
3
votes
1answer
98 views

Eggs & heart health?

How does egg consumption impact atherosclerosis/cardiovascular disease risk? I'd especially welcome experimental studies.
2
votes
2answers
68 views

Are defibrillator leads actually clashed against each other?

In movies or television, the doctor gets giant heavy clothing iron sized leads. Clashes them together and uses them on the patient that has a flat lined heart and after doing it 1 times per second ...
8
votes
2answers
31k views

What does “sinus rhythm otherwise normal ECG” mean?

I just recently made an ECG to be able to participate in a study and I am curious what "sinus rhythm otherwise normal ECG" means. Is my sinus rhythm out of order? A doctor will be checking my ECG and ...
3
votes
0answers
36 views

How to assess the risk of “cardiac event” for a healthy runner? [closed]

It appears to be dreadfully not uncommon that seemingly healthy people suddenly die of "cardiac events" when doing physical exercises. Here is just another sad example: a healthy and regularly running ...
6
votes
0answers
206 views

How likely is a person to develop permanent health issues if he/she is sensitive to and continuously exposed to marijuana fumes?

I'm a 29 year old male, I live in an apartment, and the tenant above me is smoking a lot of marijuana every day and has been doing so for the last three months**. The fumes are entering my apartment ...
4
votes
1answer
827 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? ...
0
votes
1answer
62 views

Is there any intelligence in heart? [closed]

Is it correct to say that heart and brain both are center of intellect ? Has there been any scientific study done to prove that like Brain, Heart also has intelligence and there are heart-signals ...
6
votes
1answer
380 views

Can Manual External Defibrillators “restart” a heart?

On TV it appears that every time a heartbeat monitor flat-lines they pull out the paddles of a manual external defibrillator (MED) and give a few shocks, often explicitly cranking up the output when ...
1
vote
0answers
55 views

Consistently high WBC, normal CRP in a post-cardiac arrest patient

A patient had an elective coronary angioplasty which showed 80% blocked LAD. A stent was placed. She was stable and sent home. The next day she felt unwell and collapsed with LOC for a few seconds. ...
4
votes
1answer
122 views

What's the difference between a fast heart rate during exercise, and a fast heart rate during an anxiety attack?

I'm curious to know what the difference is between having a fast heart rate during exercise and having a fast heart rate say at rest or during an anxiety attack. It's known that exercise is good for ...
-3
votes
1answer
174 views

Is there a drug being developed for heart palpitations without arrhythmia? [closed]

Is there a drug being developed for palpitations without arrhythmia?
6
votes
1answer
180 views

Mechanical cardio resuscitation for asystole

We have great machines for shocking a heart out of various malfunctions. But my understanding is that the only "machine" indicated for restarting a heart that has completely stopped (i.e., "flat-...
1
vote
0answers
66 views

Big difference between waking and resting heart rate

I recently got an Apple Watch and am using the HeartWatch app. I'm concerned because my sedentary heart rate is pretty high - it's about 85 bpm with frequent spikes to 100, but my waking heart rate is ...
5
votes
1answer
49 views

Hard water and cardiovascular problems

Wikipedia cites one 1970 study by Voors claiming that drinking hard water lessens the odds of dying from atherosclerosis. The stud itself even makes some bolder claims stratified by race, namely that ...
5
votes
1answer
85 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 ...
-1
votes
2answers
336 views

Does the digestive disorders affect the location of aorta beat around navel?

You might have experienced this. If you lie on your back on a flat surface and place your finger or thumb right over navel (men or women), and press softly down, you'd feel the beating just like ...
4
votes
1answer
339 views

Decisions about anticoagulation in atrial fibrillation: how to factor in thrombocytopenia?

The benefit of anticoagulation for prevention of stroke in patients with atrial fibrillation has been well established. However, the benefit is always to be weighed against the risk, in this case, ...