7 results
What's in a Blood Gas? VBG vs ABG

BOTTOM LINE: VBG is less painful, more easily obtained
obtained than ABG, pH ... Diagnosis #ABG #VBG #Differences ... #Versus #Comparison ... #PH #PCO2 #Studies ... #Conversion #Correlation
ABG vs VBG: Arterial vs Venous Blood Gases

ABG
PROS: Tells you exactly what the arterial environment looks
environment looks like (pH ... VBG #Laboratory #Correlation ... #Comparison #pH ... pCO2 #Diagnosis #Differences
Management of Hyponatremia
Hypertonic Saline - Only indicated if patient has severe symptoms + Na < 125
Give
The target for correction ... hypertonic saline correction ... FE Urate post correction ... Volume • Consider correction ... • Calculate correction
Right Heart Catheterization - Pulmonary Artery Pressures and Calculations
PULMONARY VASCULAR RESISTANCE = (meanPAP-PCWP) / CO
 •
differentiating subtypes of PH ... • PH (mean PAP ... PCWP PULMONARY ARTERY ... Reflects the pressure difference ... have shown good correlation
Fatigue and IBD Algorithm
 • 40-50% patients have fatigue despite clinical remission
 • Risk factors: BMI,
Fatigue and IBD Algorithm ... improved fatigue after ... correction of lab ... modifications Algorithm ... #Fatigue #IBD #Algorithm
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
systematic error Correlation ... perfect positive correlation ... perfect negative correlation ... , 0 = no correlation ... Biostatistics #formulas
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
↓

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RV
ICU-card «ICU, Formulas ... Q-T interval correction ... Oxygen Content Difference