Push-Dose Pressors

Why this matters

A push-dose pressor is a short blood-pressure bridge. Epinephrine or phenylephrine can buy time in life-threatening hypotension. It does not replace treatment of the cause.

Use it only if you are authorized. Mix it from the written card. Label the syringe. If your system has no written push-dose protocol, do not invent a dilution from an arrest ampule. An unlabeled syringe is how this causes harm.

Clinical sequence

1. Confirm you are allowed to mix this. Push-dose pressors exist only if your protocol and your training say so. If they do not, do not invent a dilution from an arrest ampule.
2. Open the mixing card your service uses. Dilute exactly as the card says. Label the syringe before it leaves your hand.
3. Say the concentration out loud before every push. Have a partner check when you have a partner. Recheck the blood pressure. Watch the monitor.
4. Treat the cause while the pressure is up. Bleeding, tension pneumothorax, the rhythm, and fluids still have to be treated. This drug only buys time.

What Push-Dose Is For

• Small, repeated intravenous doses to support blood pressure briefly while you treat the cause or start an infusion.
• Not a substitute for fluid in pure hypovolemia. Not a substitute for bleeding control.
• Not for a stable patient with a mildly low reading.

Safety Pillars

1. Authorized only. Training, protocol, and the correct clinical picture.
2. Dilution discipline. Follow your exact mixing card. Label the syringe immediately.
3. A clear indication. Hypotension around intubation, and hypotension after return of circulation, if your protocol includes them.
4. Monitoring. Continuous ECG, frequent blood pressure, and waveform capnography when available.
5. Treat the cause. A pressor without fixing tension, bleeding, or a bad rhythm only buys time.

Key points

• If your system does not carry push-dose pressors, do not improvise from an arrest epinephrine ampule without a written protocol.
• Say the concentration every time before a push.
• Document the times, the blood-pressure response, and how you mixed it.

Common errors

• An unlabeled syringe of epinephrine.
• Using a push-dose pressor as the default for trauma hemorrhage, instead of blood and bleeding control.
• Mixing during a resuscitation without the card or app your service uses.

Practice

Related: Epinephrine contexts.

Sources & Further Study

Named guidelines for further study. They are not clinical orders and do not replace your protocol or medical direction.

• NAEMSP / ACEP / ACS-COT: Prehospital Vasopressors (2024) — Vasopressors are not a substitute for bleeding control. Use only an authorized mixing card.
• NASEMSO National Model EMS Clinical Guidelines (2022) — Model EMS language. Your protocol decides whether push-dose pressors exist.
• Push-dose pressors are a temporary blood-pressure bridge only where you are trained and authorized. Mixing errors and unlabeled syringes are the main way they cause harm.