10 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
and Epidemiology Equations ... Biostatistics #statistics ... #Epidemiology #Equations
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
of alveolar gas equation ... of alveolar gas equation ... lung diseases, pulmonary ... asthma, COPD, pulmonary ... shunting (eg, pulmonary
Specificity Calculation - Probability that a test correctly identifies those without the disease (true negative rate)

Specificity
Biostatistics #statistics ... #Epidemiology #Equations
Sensitivity Calculation - Probability that a test correctly identifies those with the disease (true positive rate)

Sensitivity
Biostatistics #statistics ... #Epidemiology #Equations
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
Biostatistics #statistics ... #Epidemiology #Equations
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Biostatistics #statistics ... #Epidemiology #Equations
Oxygen Delivery Equation
DO2 = CO x {(1.39 x Hb x sO2) + (PaO2 x 0.03)}
DO2 =
Oxygen Delivery Equation ... Oxygen #Delivery #Equation ... pathophysiology #pulmonary
Right Heart Catheterization - Pulmonary Artery Pressures and Calculations
PULMONARY VASCULAR RESISTANCE = (meanPAP-PCWP) / CO
 •
Catheterization - Pulmonary ... and Calculations PULMONARY ... and Diastolic Pulmonary ... on PVR & PCWP PULMONARY ... calculations #pressures #equations
Work Shifting - Mechanical Ventilation
Why the new term:
Synchrony issues, by definition, have to do with timing.
work from the equation ... #criticalcare #pulmonary
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
→ ↓ → →↑ Pulmonary ... +2PDP)/3 Mean Pulmonary ... MPAP-WP)*79.92)/CO Pulmonary ... values units equation ... = 1.36 cmH20 PULMONARY