Calculators
A comprehensive suite of clinical calculators for perfusionists.
Pre-Bypass Planning
Essential pre-bypass planning and setup.
On-Bypass Management
Calculations for managing the patient during CPB.
General & Post-Bypass
Post-bypass analysis and general clinical calculations.
Circuit Resistance
Calculate resistance from pressures
Oxygenator Efficiency
Assess O₂ transfer efficiency
Advanced Blood Gas
Anion Gap & Delta Gap analysis
Normal Blood Gas
Analyze acid-base balance
Electrolyte Correction
Bicarb & Potassium deficits
Cardiac Output (Fick)
Assess CO and shock states
Drug Calculations
Dilutions & infusion rates
Clinical Application
Perfusion calculations are critical for ensuring patient safety and procedural efficacy during cardiopulmonary bypass. This suite of tools is designed to assist perfusionists in rapid decision-making across all phases of the procedure.
- Pre-Bypass: Establishing baseline goals for blood flow based on Body Surface Area (BSA) and planning for hemodilution helps in selecting the appropriate prime volume and circuit components.
- On-Bypass: Real-time monitoring of oxygen delivery (DO₂) and consumption (VO₂) allows for goal-directed perfusion, optimizing myocardial protection and systemic organ function.
- Anticoagulation: Precise heparin dosing and ACT-based monitoring prevent thrombotic events, while accurate protamine calculations ensure safe reversal post-bypass.
- Safety: Formula-based validation reduces the risk of manual calculation errors in high-stakes clinical environments.
All formulas used in these calculators are derived from standard clinical practices in cardiac perfusion. For detailed equation references, please visit our References page.