Cardiology

Causes of QT Prolongation

QT interval is the length between the beginning of the QRS complex (ventricular depolarization) and end of the T wave…

8 years ago

How does CHF cause AKI?

It is quite common to see accompanying acute kidney injury during a congestive heart failure exacerbation.  WHY? Renal hypo-perfusion secondary…

8 years ago

TCA Toxicity and Bicarbonate: Mechanism

Sodium bicarbonate has become the mainstay treatment for arrhythmias caused by TCA toxicity. The cardiotoxic effects of TCA work via…

9 years ago

Bifascicular and Trifascicular Block

Bifascicular Block: 1. Left anterior fascicular block (LAFB) or left posterior fascicular block (LPFB) AND 2. Right bundle branch block…

9 years ago

Why do Right Sided Heart Murmurs Increase with Inspiration?

A heart "murmur" is the sound of blood flowing (i.e through a valve). RIGHT SIDED MURMURS (i.e Tricuspid regurgitation or…

9 years ago

Diastolic Hypertension in Hypothyroidism: Mechanism

Hypothyroidism has been recognized as a cause of secondary hypertension. Img Cred: http://circ.ahajournals.org/ Previous studies on the prevalence of hypertension…

10 years ago

What side are Congestive heart failure Pleural effusions on?

Pleural effusions in patients with congestive heart failure are typically bilateral. However, a unilateral pleural effusion is more commonly seen…

10 years ago

Physical Findings that change Likelihood of Aortic Stenosis

Aortic stenosis (AS) is classically a mid-systolic crescendo-decrescendo murmur that radiates to the carotid. Features that INCREASE likelihood [1]: Pulsus…

10 years ago

Regular vs. Irregular Supraventricular Tachycardias (SVT)

REGULAR IRREGULAR ·         Sinus tachycardia ·         AVRT ·         AVNRT ·         Atrial flutter (with fixed block) ·         Atrial tachycardia ·         Atrial…

10 years ago

Hypokalemia and Digoxin Toxicity

Digoxin [Antiarrhythmic (Class III)] competes with Potassium for binding to cellular Na+/K+ ATPase pumps. Hypokalemia predisposes the patient to Digoxin…

10 years ago

This website uses cookies.