# All Medical-critical-care Formulas List

## Acute Lung Injury (ALI) Ratio

#### Formula:

ALI = PaO2/FIO2
FIO2 units are in decimal form (e.g. 28% FIO2 = 0.28)
ALI present if < 300
ARDS present if < 200

## Very Low Density Lipoprotein (VLDL)

#### Formula:

VLDL = triglycerides (mg/dL) / 5
VLDL = triglycerides (mmol/L) / 2.2

## ASA classification

P1-> A normal healthy patient.
P2-> A patient with mild systemic disease.
P3-> A patient with severe systemic disease.
P4-> A patient with severe systemic disease that is a constant threat to life.
P5-> A moribund patient who is not expected to survive without the operation.
P6-> A declared brain-dead patient,organs removed for donor purposes.

## International Normalized Ration (INR)

#### Formula:

INR = (PTpatient/PTnormal)ISI

Where,

PTpatient = Patient's Measure PT (seconds)
PTPTnormal = Laboratory's Geometric Mean Value for Normal Patients (seconds)
ISI = International Sensitivity Index

## Prevalence Rate of Disease

#### Formula:

Prevalence Rate of Disease = (n / Total population) x 10 n

Where

n - All new & preexisting cases of specific disease

## LDL Cholesterol

#### Formula :

LDL Cholesterol = Total Cholesterol - HDL Cholesterol - (Triglycerides / 5)

## HDL Cholesterol Formula

#### Formula:

HDL = Total Cholesterol - Low Density Lipoprotein Cholesterol - ( Triglycerides / 5 )
Non HDL = Total Cholesterol - HDL

Where,

HDL = High Density Lipoprotein

## Child Mortality Rate

#### Formula:

Infant Mortality Rate = (i / l)×1000

Where,

i = Number of Resident Infant Deaths
l = Number of Resident Live Births

## Oxygenation Index

#### Formula:

Oxygenation Index (OI) = (FiO2 x MAP x 100) / PaO2

Where,

FiO2 = Inspired Oxygen Concentration
MAP = Mean Airway Pressure
PaO2 = partial pressure of arterial O2

## Intracerebral Hemorrhage Volume Calculation

#### Formula:

Estimated Hemorrhage Volume = (B x C x D x S) / A

Where,

A = Hemorrhage Shape: If Round/Ellipsoid: 2; Otherwise: 3
B = Hemorrhage Length
C = Hemorrhage Width
D = Number of CT Slices
S = CT Slice Thickness

## Prostate Cancer Volume

#### Formula:

V = L × W × H × π / 6
D = A / V

Where,

L = Prostate Length
W = Prostate Width
H = Prostate Height
V = Prostate Volume
A = PSA Value
D = Tumor Density