Epinephrine Dose in CPR Calculator

Enter patient weight, dose rate (mg/kg), and epinephrine concentration to instantly calculate the correct dose in mg, mcg, and mL for cardiac arrest resuscitation.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Enter Patient Body Weight
Input the patient's weight in kilograms, as epinephrine dosing is weight-based.
2
Specify Dose Rate
Enter the desired dose rate in mg/kg. The standard AHA dose for CPR is 0.01 mg/kg IV/IO.
3
Input Epinephrine Concentration
Provide the concentration of your epinephrine vial in mg/mL. Use 0.1 mg/mL (1:10,000) for IV/IO CPR.
4
Review Your Results
See the calculated epinephrine dose in mg, mcg, and mL, along with a repeat dose rate and patient weight category.

Example Calculation

A veterinary technician needs to calculate the standard epinephrine dose for a 14 kg dog in cardiac arrest, using a 1:10,000 concentration.

Body Weight (kg)

Dose Rate (mg/kg)

0.01

Epinephrine Concentration (mg/mL)

0.1

Results

0.140 mg

Tips

Verify Concentration

Always double-check the epinephrine concentration. A 1:10,000 solution is 0.1 mg/mL, while a 1:1,000 solution is 1 mg/mL. Using the wrong concentration can lead to a 10-fold dosing error, which is critical in emergency situations.

Standard vs. High Dose

The standard AHA (and RECOVER for veterinary) dose for epinephrine in CPR is 0.01 mg/kg. High-dose epinephrine (0.1 mg/kg) is generally *not* routinely recommended due to potential adverse effects without clear survival benefit. Always adhere to current guidelines.

Pediatric Max Dose

For pediatric patients (and often smaller animals), the total IV/IO dose of epinephrine is capped, typically at 1 mg (0.1 mg/mL = 10 mL) to prevent excessive administration. Ensure your calculated dose does not exceed this limit, especially for larger pediatric weights.

Precision Epinephrine Dosing in CPR for Animals

The Epinephrine Dose in CPR Calculator provides vital assistance in emergency veterinary medicine, allowing for precise calculation of epinephrine dosage in milligrams, micrograms, and milliliters. This tool incorporates weight-based mg/kg protocols and acknowledges pediatric max-dose capping, ensuring accurate drug delivery during critical cardiac arrest situations in 2025.

Why Accurate Epinephrine Dosing is Critical in CPR

Accurate epinephrine dosing during CPR is paramount for patient survival and minimizing adverse effects. Epinephrine is a potent vasopressor and cardiac stimulant; too little may be ineffective, while too much can lead to severe arrhythmias, hypertension, and myocardial oxygen demand, potentially hindering resuscitation efforts. In emergency situations, where seconds count and stress is high, a precise calculation based on body weight and concentration is essential to deliver the correct volume, directly impacting the outcome of a cardiac arrest event in both human and animal patients.

The Weight-Based Epinephrine Dosing Logic

Epinephrine dosing in CPR is based on the patient's body weight, typically following a standard protocol of 0.01 mg per kilogram. This ensures that the dose is appropriately scaled for individuals of varying sizes. The concentration of the epinephrine solution is also a critical factor, as it dictates the volume (in mL) required to deliver the calculated milligram dose. For pediatric patients, and often for smaller animals, a maximum dose cap (e.g., 1 mg total) is often applied to prevent inadvertent overdose.

The core calculations are:

dose in mg = body weight (kg) × dose rate (mg/kg)
volume to administer (mL) = dose in mg / epinephrine concentration (mg/mL)
dose in mcg = dose in mg × 1000

For example, if the standard dose rate is 0.01 mg/kg and the concentration is 0.1 mg/mL (1:10,000 dilution), a 10 kg patient would receive 0.1 mg, which translates to 1 mL.

💡 For other critical veterinary dosing, our Foal Colostrum Intake Calculator helps ensure newborn animals receive vital early nutrition.

Calculating Epinephrine for a 14 kg Patient

Consider a veterinary scenario where a 14 kg dog is in cardiac arrest, requiring epinephrine. The standard dose rate is 0.01 mg/kg, and the available epinephrine concentration is 0.1 mg/mL (a 1:10,000 solution).

Patient Body Weight: 14 kg
Dose Rate: 0.01 mg/kg
Epinephrine Concentration: 0.1 mg/mL

First, calculate the total dose in milligrams: Dose in mg = 14 kg × 0.01 mg/kg = 0.14 mg

Next, calculate the volume to administer in milliliters: Volume in mL = 0.14 mg / 0.1 mg/mL = 1.4 mL

Finally, convert the dose to micrograms for clarity: Dose in mcg = 0.14 mg × 1000 = 140 mcg

The veterinary technician would administer 1.4 mL of the 0.1 mg/mL epinephrine solution, delivering 0.14 mg (140 mcg) of the drug.

💡 Similar precision is needed for blood products. Our Fresh Frozen Plasma Volume Calculator can help determine appropriate volumes for transfusions.

Emergency Veterinary Care & Cardiac Arrest Protocols

Cardiac arrest in pets can arise from various causes, including trauma, severe underlying diseases (e.g., heart failure, kidney failure), and complications during anesthesia. The principles of veterinary CPR are guided by the Reassessment Campaign on Veterinary Resuscitation (RECOVER) guidelines, emphasizing chest compressions, ventilation, and drug administration. Epinephrine is a cornerstone of these protocols, typically administered at 0.01 mg/kg intravenously or intraosseously every 3-5 minutes. Despite advancements, the survival rate for pets experiencing cardiac arrest remains challenging, often below 10%, highlighting the critical need for rapid, precise intervention. Other drugs like atropine (for bradyarrhythmias) or vasopressin may also be used depending on the specific arrest rhythm and underlying cause, reinforcing the complexity of emergency veterinary care.

Epinephrine Dosing Protocols: Standard vs. High-Dose

Epinephrine dosing protocols in CPR have evolved significantly, with current guidelines emphasizing a standard dose over historical high-dose approaches. The standard dose for intravenous (IV) or intraosseous (IO) administration is 0.01 mg/kg, repeated every 3-5 minutes. This dose is supported by extensive research in both human and veterinary medicine (e.g., AHA and RECOVER guidelines) for its ability to improve coronary perfusion pressure and increase the chances of return of spontaneous circulation without excessive adverse effects. Historically, high-dose epinephrine (e.g., 0.1 mg/kg) was explored, but studies have not consistently shown improved survival to discharge and have indicated a higher incidence of post-resuscitation complications like myocardial dysfunction and arrhythmias. Therefore, standard dosing is now the overwhelmingly preferred method. The choice of concentration, typically 1:10,000 (0.1 mg/mL) for IV/IO CPR versus 1:1,000 (1 mg/mL) for intramuscular or subcutaneous routes, directly impacts the volume needed, underscoring the importance of verifying the correct concentration to prevent dosing errors.

Frequently Asked Questions

Why is epinephrine used in CPR?

Epinephrine is used in CPR primarily for its vasoconstrictive effects, which increase systemic vascular resistance and improve coronary and cerebral perfusion during cardiac arrest. It also has positive inotropic and chronotropic effects, stimulating the heart. By redirecting blood flow to vital organs, epinephrine enhances the chances of successful resuscitation and improves the likelihood of return of spontaneous circulation (ROSC), making it a cornerstone of advanced cardiac life support protocols for both humans and animals during emergencies.

What is the recommended dose rate for epinephrine in CPR?

The recommended dose rate for epinephrine in CPR, according to current AHA and RECOVER (veterinary) guidelines, is 0.01 mg/kg for intravenous (IV) or intraosseous (IO) administration. This standard dose should be repeated every 3-5 minutes during resuscitation efforts. High-dose epinephrine (e.g., 0.1 mg/kg) is not routinely recommended due to a lack of evidence of improved outcomes and potential for adverse effects, emphasizing precision in emergency medical drug delivery.

How does epinephrine concentration affect the volume to administer?

Epinephrine concentration directly affects the volume of medication that needs to be administered to achieve the correct dose. A standard 1:10,000 concentration contains 0.1 mg/mL, meaning 1 mL delivers 0.1 mg of epinephrine. If a 1:1,000 concentration (1 mg/mL) were used without dilution, a 10-fold smaller volume would deliver the same dose, dramatically increasing the risk of overdose. Therefore, confirming the concentration (e.g., 1:10,000 for IV/IO CPR) is critical for accurate volume administration.

Are there different epinephrine doses for different types of cardiac arrest?

While the standard 0.01 mg/kg dose is broadly applied across various types of cardiac arrest rhythms (e.g., asystole, pulseless electrical activity, ventricular fibrillation), the timing and use of epinephrine can be tailored. For instance, in shockable rhythms like ventricular fibrillation, defibrillation takes priority, with epinephrine administered after initial attempts at electrical therapy. The underlying cause of arrest (e.g., hypovolemia, hypoxia) also guides overall treatment strategy alongside epinephrine. However, the dose rate itself generally remains consistent according to current guidelines.