blood_volume_calculation: Estimated Blood Volume (Nadler Equation)

In cliot: Clinical Indices and Outcomes Tools

Estimated Blood Volume (Nadler Equation)

Description

Calculates the estimated total blood volume in Liters using the Nadler equation. This method is considered more accurate than simple weight-based estimates (e.g., 70 mL/kg) because it accounts for the patient's height and sex. Accurate blood volume estimation is critical for procedures like plasmapheresis or assessing volume status in shock.

Usage

blood_volume_calculation(sex, height_cm, weight_kg)

Arguments

sex	String. Patient sex ("Male" or "Female").
height_cm	Numeric. Patient height in centimeters.
weight_kg	Numeric. Patient weight in kilograms.

Value

A list containing:

Estimated_Blood_Volume_L	The calculated total blood volume in Liters.
Formula	The method used (Nadler Equation).

References

Nadler SB, Hidalgo JH, Bloch T. Prediction of blood volume in normal human adults. Surgery. 1962;51(2):224-232.

Examples

# Example 1: Male
# 180cm, 80kg
# BV = (0.3669 * 1.8^3) + (0.03219 * 80) + 0.6041 = ~5.3 L
blood_volume_calculation("male", 180, 80)

# Example 2: Female
# 160cm, 60kg
# BV = (0.3561 * 1.6^3) + (0.03308 * 60) + 0.1833 = ~3.6 L
blood_volume_calculation("female", 160, 60)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.