Bradycardia Physiology Tachycardia 
Dr. Smith's ECG Blog
JANUARY 23, 2024
Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. The physiologic reason for this — is thought to be the result of momentarily increased circulation from mechanical contraction arising from the "sandwiched in" QRS complex. She was started on isoprenalin (isoproterenol).
Cardiomatics
APRIL 5, 2024
Then, the current flows to an area known as the bundle of His, which divides into two branches (LBB and RBB) and is the only physiological pathway connecting the atria with the ventricles. Sinus tachycardia – sinus rhythm above 100 bpm is a sinus tachycardia. Usually does not exceed 160 bpm.
Ken Grauer, MD
DECEMBER 23, 2023
Physiologically — the most commonly observed pattern of AFlutter, known as " Typical " AFlutter — produces 2:1 negative deflections seen in the inferior leads ( as seen in Figure-3 ) — as a result of CCW ( C ounter C lock W ise ) rotation of a fixed reentrant circuit around the tricuspid valve annulus and through the cavo-tricuspid isthmus.
Dr. Smith's ECG Blog
OCTOBER 7, 2019
Both of these features make inferior + RV MI by far the most likely ( Pseudoanteroseptal MI is another name for this ) There is also sinus bradycardia and t he patient is in shock with hypotension. A narrow complex bradycardia without any P-waves is also likely to respond to atropine, as it may be a junctional rhythm.
MIBHS
JANUARY 31, 2025
The Role of Wearable Technology in Heart Health Wearable tech is designed to monitor physiological data and provide actionable insights to users. Early detection of conditions like AFib, bradycardia, or tachycardia allows patients to address issues before they become critical.
EMS 12-Lead
MARCH 19, 2023
The shortened PR-interval, specifically, proved to be quite beguiling as it swept crews down a differential diagnosis of intermittent accessory pathway syndrome – insomuch as a “syndrome” of recurrent tachycardia to account for the patient’s symptoms. Conversely, some patient’s simply have brisk AVN conduction, which is completely benign.
Dr. Smith's ECG Blog
APRIL 8, 2015
If the patient has Abnormal Vital Signs (fever, hypotension, tachycardia, or tachypnea, or hypoxemia), then these are the primary issue to address, as there is ongoing pathology which must be identified. Thus, if there is documented sinus bradycardia, and no suspicion of high grade AV block, at the time of the syncope, this is very useful.
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