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Collection: Medical Calculators

Content Author:
OPENPediatrics Staff
Date: 16 May 2017

Calculate the O2 delivery, consumption, and extraction ratio for oxygen in blood.

All calculations must be confirmed before use. The authors make no claims to the accuracy of the...

Content Author:
OPENPediatrics Staff
Date: 16 May 2017

Calculation for cardiac index, an indicator of hemodynamic performance of the heart, using cardiac output (CO) from the left ventricle, per minute, per meter squared of body surface area (BSA)....

Content Author:
OPENPediatrics Staff
Date: 9 November 2015

PIM2 estimates mortality risk in the pediatric intensive care setting from data collected at the time of ICU admission through one hour after admission.

All calculations must be confirmed...

Content Author:
OPENPediatrics Staff
Date: 8 September 2015

The Glasgow Coma Scale (GCS) is a scoring system used for quantifying a patient’s level of consciousness. A coma is generally defined as a GCS score < 8.

All calculations must be...

Content Author:
OPENPediatrics Staff
Date: 5 August 2015

Calculation for body mass index.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these suggested doses are...

Content Author:
OPENPediatrics Staff
Date: 5 August 2015

Calculation for IV Drip Rate (DR).

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these suggested doses...

Content Author:
OPENPediatrics Staff
Date: 23 July 2015

Calculate the remaining time for oxygen delivery from an E-cylinder.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculates the anion gap. The anion gap is affected by changes in unmeasured ions. An elevated anion gap indicates metabolic acidosis.

All calculations must be confirmed before use. The...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculates daily energy expenditure based on gender, height and weight for caloric requirements for patients aged 15-85.

All calculations must be confirmed before use. The authors make no...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculates a corrected calcium level for patients with hypoalbuminemia.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation of a patient’s ideal body weight, using their height. This formula is only an approximation, and is only applicable for patients who are 60 inches (5 feet) or taller.

All...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation of maintenance fluid requirements for children based on age, using the 4-2-1 rule which is derived form the Holliday-Segar nomogram.

All calculations must be confirmed before...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation for mean arterial pressure (MAP).

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation for pH using the Henderson-Hasselbach Equation.  The Henderson-Hasselbalch equation estimates the serum pH based on the partial pressure of CO2 and the measured level of bicarbonate in...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation for Cardiac Output using Echocardiogram (Echo) measurements. This calculator also calculates Cardiac Index using the calculated cardiac output (q) and the body surface area.

 ...

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation for cardiac output using the Fick Principle. Cardiac output is the volume of blood being pumped by the left ventricle per minute.

All calculations must be confirmed before use....

Content Author:
OPENPediatrics Staff
Date: 13 July 2015

Calculation for body surface area.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these suggested doses...

Content Author:
OPENPediatrics Staff
Date: 6 July 2015

Calculation for the resistance offered by the vasculature of the lungs.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information...

Content Author:
OPENPediatrics Staff
Date: 6 July 2015

Calculates the oxygenation index, which is useful for following oxygenation trends in a patient.

All calculations must be confirmed before use. The authors make no claims of the accuracy of...

Content Author:
OPENPediatrics Staff
Date: 23 February 2015

Calculates the A-a gradient to assess for degree shunting and V/Q mismatch.

All calculations must be confirmed before use. The authors make no claims of the accuracy of the information...