4
votes
Bradyarrhythmia & Bradycardia- same or different?
Literally translating the terms would say that bradycardia is a "slow heart" and a bradyarrhythmia is a "slow abnormal/irregular (heartbeat)". In many cases they will substantially ...
- 13.8k
4
votes
Accepted
Why squatting leads to decrease in MVP murmur
The murmur from HOCM is from the mitral valve leaflet jamming into the septum, also called systolic anterior motion (SAM). This disappears when you increase the volume of LV because if you increase ...
- 86
4
votes
Confusion regarding splitting of the s2 heart sound
The respiratory and cardiac cycles vary in length. While the average adult respiratory rate is between 12-20 breaths per minute, the heart beats at an average of 60-100 bpm. During a single ...
- 81
4
votes
Accepted
Why do ventricular action potentials have no local potentials like neuronal action potentials?
Short answer:
The time scales in your two diagrams are different by a couple orders of magnitude. There's something like a "local potential" in the second trace, it's just so steep you can ...
- 13.8k
2
votes
Confusion regarding splitting of the s2 heart sound
To address your two questions:
How does the ‘suctioned’ blood during inspiration reach the Right Ventricle ( RV) as the Tricuspid Atrioventricular Valve is shut during ventricular systole.
Yes, ...
- 121
2
votes
Accepted
What is considered moderate when referring to (sub)acute hypertension, hyperthermia and tachycardia?
"Moderate" and "modest" are just descriptive adjectives. They don't have any quantitative meaning, and I'm not aware of any effort to standardize their meaning for these sorts of ...
- 13.8k
1
vote
Accepted
How to determine QRS voltage from ECG?
Einthoven’s Law
From ECG and Echo Learning:
This law implies that the sum of the potentials in lead I and lead Ill equals the potentials in lead II. In clinical electrocardiography, this means that ...
- 3,283
1
vote
How can myocyte contract in "isovolumetric contraction" phase of cardiac cycle without shortening?
Isovolumetric contraction of heart is a type of isometric contraction of muscles because something is resisting applying the equal and opposite force, in case of heart it is the blood which is ...
- 41
1
vote
Accepted
What is the functional difference between cardio-pulmonary and the baroreceptors in the regulation of Blood pressure?
High-pressure baroreceptors are in the part of the circulatory system with blood pressures higher than 60 mm Hg - in the aortic arc and in the carotid sinus at the bifurcation of the carotid artery. ...
- 15.8k
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