12 results
Atrial Fibrillation Overview

Symptoms:
Palpitations, light-headedness, dizziness, dyspnea, exercise intolerance, chest pain, near-syncope, syncope.

1. Why?
Cardiac:
• Valvular heart disease
•
Palpitations, light-headedness ... Noncardiac: • Pulmonary ... Rate Control • ... #Fibrillation #Cardiology ... #Management #Algorithm
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
(e.g., diltiazem ... with caution in pulmonary ... with caution in pulmonary ... Treatment #management #cardiology ... #algorithm
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
- Right Bundle Branch ... with QRS ≥120 ms ... electrocardiogram #pathophysiology ... #ekg #ecg #cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... Cheat Sheet 1) Rate ... proportional to heart rate ... @AmyChung #EKG ... Electrocardiogram #cardiology
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Mask Oxygen Delivery ... not tolerate a tight-fitting ... mask (e.g. facial ... specified flow rate ... Devices #management #pulmonary
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess Pathophysiology ... degrees • Chills, night ... CXR upright or lat ... • Vasculitis (e.g ... Lung #Abscess #pulmonary
Graphic representation of transthoracic echocardiographic parameters in the assessment of right ventricular pressure overload. A′ = peak late
assessment of right ... A′ = peak late diastolic ... acceleration time of pulmonary ... ejection ms and ... RightVentricular #Cardiology
Right Heart Catheterization - Pulmonary Artery Pressures and Calculations
PULMONARY VASCULAR RESISTANCE = (meanPAP-PCWP) / CO
 •
Right Heart Catheterization ... RV dysfunction. e.g ... forward flow. e.g ... Ahmed Ghoneem, MD MSc ... catheter #diagnosis #cardiology
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Digoxin Pharmacology ... and Pathophysiology ... Decreased heart rate ... #Pathophysiology ... #cardiology
General schema for respiratory support in patients with COVID-19
Low flow nasal cannula
 • Typically set at
Iimitation in the flow rate ... severe hypoxemia might ... filter • N95 mask ... volumes of ~6 cc/kg ... hypoxia #failure #algorithm