938 results
Calcium Channel Blockers - Dihydropyridines vs Non-Dihydropyridines
Dihydropyridines (amlodipine, felodipine, nifedipine, nicardipine)
 • SVR: Decrease
 • Inotropy:
: No effect • Chronotropy ... Inotropy: Decrease • Chronotropy ... pharmacology #comparison #table
VA ECMO Unloading - LV Venting
Different LV Venting Strategies work through these basic mechanisms: ↓ Preload,
Contractility, ↓ Afterload ... Vasodilators: ↓ Afterload ... Reducing ECMO Flow: ↓ Afterload ... • IABP: ↓ Afterload
Mean Arterial Pressure (MAP)

Average arterial pressure throughout one cardiac cycle, systole, and diastole. 
Surrogate indicator of
Afterload also affects ... an increase in afterload ... affected by the chronotropy ... #afterload #Heartrate ... #chronotropy #dromotropy
Cardiac Maneuvers and Effects on Murmurs

Valsalva Standing - Decr BIood Return to LV
Laying Down, Squatting, Straight
Phenylephrine - Incr Afterload ... Nitrate - Decr Afterload ... Post PVC - Decr Afterload
Clinician's Pocket Guide to Vasopressors - Receptor Profiles and Hemodynamic Parameters
 • Systemic Vascular Resistance -
contractions • Chornotropy ... management #comparison #table
The Death Spiral: Increased RV Afterload (Acute PE) 
#Pathophysiology #PE #PulmonaryEmbolism #Embolism #DeathSpiral #Shock #RVDysfunction #RebelEM
: Increased RV Afterload
Post-TAVR Suicide Left Ventricle
Pre-TAVR: High afterload from aortic stenosis leads to compensatory left ventricular hypertrophy and
Pre-TAVR: High afterload ... Post-TAVR: Rapid ↓ in afterload ... Phenylephrine to ↑ Afterload
Hypertrophic Obstructive Cardiomyopathy: Heart Murmur
 • Occurs during systole 
 • Crescendo-decrescendo murmur
 • Heard best
reductions in afterload ... elevations in afterload
Mechanical Cardiac Support Devices Compared
Cannula Size - Insertion Technique - Haemodynarnic Support
IABP:
 • Afterload: Reduced
 •
Support IABP: • Afterload ... increase ECMO: • Afterload ... TandemHeart: • Afterload ... Impella: • Afterload
Causes of acute heart failure
 - Acute pressure overload (increased afterload, mechanical flow obstruction) 
 -
overload (increased afterload