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).

Tachycardia 92

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 92

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.

Arrhythmia 92

Arrhythmia Tachycardia Bradycardia Electrocardiogram 92

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.

Blog 176

Blog Tachycardia Tricuspid Atrial Flutter 176

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.

Bradycardia 40

Bradycardia Cardiogenic Shock STEMI Ischemia 40

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.

Myocardial Infarction 52

Myocardial Infarction STEMI Coronary Angiogram Coronary Artery Disease 52

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.

Arrhythmia 52

Arrhythmia Outcomes Risk Factors Chest Pain 52