13 results
POCUS - Measuring Cardiac Output
1) Calculate LVOT Area
2) Calculate LVOT VTI
3) Calculate Cardiac Output

SV = (LVOT
Cardiac Output SV ... ) x (LVOT VTI) CO ... LVOT VTI) X HR CO ... (mL/min) = SV ( ... Cardiac #Output #CO
Mean Arterial Pressure (MAP)

Average arterial pressure throughout one cardiac cycle, systole, and diastole. 
Surrogate indicator of
Cardiac Output (CO ... Stroke Volume (SV ... dromotropy, and lusitropy ... chronotropy #dromotropy #lusitropy ... #SV #lvdv
Stroke Volume & Cardiac Output Measurement on POCUS
Accurately measure LVOT diameter:
1. Obtain PLAX 
2. Zoom to
around PWD trace CO ... LVOT Diam/2) 2 SV
Vasopressors and Inotropes - Comparison Table
Activity: Alpha-1, Beta-1, Dopamine, SVR, HR, CO, BP
Phenylephrine
Vasopressin
Norepinephrine
Epinephrine
Dopamine
Dobutamine
Isoproterenol
Milrinone

- Dr. Eric Strong
Inotropes - Comparison Table ... Dopamine, SVR, HR, CO ... Inotropes #comparison #table
Shock - Differential Diagnosis Framework
MAP = CO x SVR
Hypovolemic (↓ Intravascular volume):
 • Hemorrhage, dehydration due
Framework MAP = CO ... third-spacing • ↓ CO ... arrhythmia • ↓ CO ... PE, PAH • ↓ CO ... Differential #Diagnosis #table
Simplified Vasopressors and Inotropes Comparison Chart
MAP = CO x SVR
Dobutamine - Norepinephrine - Epinephrine - Phenylephrine
Comparison Chart MAP = CO ... Inotropes #comparison #table
Perform computations online at:
ScyMed.com
6th ED
ICU-card
«ICU, Formulas & Drugs»
HEMODYNAMIC PATTERNS
Condition
SAP
CVP

PAP PCWP

CO C(a-v)02 PVR

SVR
Hypovolemic shock
↓
↓
↓
↓
↓
↑
↑
↑
Cardiogenic shock
↓
1
↑
1

1
↑

Septic shock
↓
↓
↓
↓
↑
↓
↓
↓
Cardiac Tamponade
.
↑
↑
1
↓

→
↑
RV
PAP PCWP CO ... L/min/m2 HR*SV ... /SV Heart Rate ... SV 69-87 mL/beat ... CO/HR Stroke
Common Vasopressors and Inotropes
Norepinephrine (NE)
 - Indication: Distributive shock (1st line for septic shock), Cardiogenic shock
Cardiogenic shock (mild ↑CO ... Inotropes #comparison #table
CA-Bridge Buprenorphine Hospital Quick Start Algorithm - Management of acute opiate withdrawal 
 - Any prescriber
If patient is stable ... dose qday or if co-exisiting
The 8 A’s — drugs that interact with warfarin
Antibiotics 
 - Most agents, but especially co-trimoxazole,
but especially co-trimoxazole ... #Interactions #Table