The DCCV medical abbreviation stands for direct current cardioversion, a planned procedure in which a brief electric shock, timed to the heartbeat, is delivered through pads on the chest to switch a fast or irregular rhythm back to a normal one. The person is sedated for the few moments it takes.
It is cardiology shorthand. You will see it in clinic letters, hospital orders and discharge papers for people with atrial fibrillation or atrial flutter. Below is what happens on the day, how DCCV differs from emergency defibrillation, and the related terms that usually travel with it.
At a glance
Stands for
Direct current cardioversionAlso called
Electrical cardioversion, synchronized cardioversionUsed in
Cardiology, emergency medicine, intensive careCommon reasons
Atrial fibrillation, atrial flutter, some other fast rhythmsWritten as
DCCV, DC cardioversion, electrical CVDo not confuse with
Defibrillation (unsynchronized shock) and chemical cardioversion with medicine
What the DCCV medical abbreviation describes
Each letter carries part of the meaning. Direct current refers to the type of electricity the device delivers. Cardioversion means converting the heart from one rhythm to another. Put together, DCCV is the electrical route to restoring a regular rhythm, as opposed to using rhythm medicines, which is sometimes called pharmacologic or chemical cardioversion.
The device reads the heart tracing and fires the shock at a safe point in the beat. That timing, called synchronization, is what separates cardioversion from defibrillation. The aim is to return the heart to normal sinus rhythm, often written NSR in the note afterward.
DCCV medical abbreviation cardiology notes: a sample line decoded
A typical plan line packs several abbreviations together.
| Shorthand | Plain meaning |
|---|---|
| Afib | Atrial fibrillation, an irregular rhythm from the upper chambers |
| RVR | Rapid ventricular response, a fast pulse |
| TEE | Ultrasound through the esophagus to look for clots in the heart |
| DCCV | Direct current cardioversion |
| Under sedation | Given short acting medicine so the shock is not felt or remembered |
In a post procedure note: "DCCV x1 at 200 J synchronized, converted to NSR." One shock at the listed energy was given, and the rhythm changed to normal. Treat that energy figure as a sample of the wording, nothing more.
What usually happens on the day
The person typically arrives without eating for several hours, has an IV placed and is attached to a heart monitor. Sticky pads go on the chest and back. A sedation specialist gives medicine to make the person sleep briefly, the shock is delivered, and the rhythm is checked. If the first shock does not work, another may be given. Most people wake within minutes and leaving later that same day is common.
Because a stroke can happen if a clot in the heart moves after the rhythm changes, teams consider blood thinning medicine before and after the procedure, and sometimes do a TEE first. The exact plan is decided by the cardiology team for each person.
Cardioversion versus defibrillation
Both use pads and a shock, and the same machine can often do both, so the terms get mixed up.
- DCCV: synchronized, usually planned, for a person who has a pulse but an abnormal rhythm.
- Defibrillation: unsynchronized, an emergency step for a heart that is not pumping, such as in cardiac arrest.
The device found in public places, an AED, is built for defibrillation. An implanted device such as an ICD can do both on its own.
Questions people often bring to the cardiology team
- Why is cardioversion being suggested now rather than medicine alone?
- Is a TEE needed first, and why?
- How long should blood thinners continue afterward?
- What symptoms suggest the rhythm has come back?
- Can I drive home, or do I need someone with me?
What follows a cardioversion differs from person to person. Your cardiologist or rhythm nurse is the right source for anything about your own heart care.
Frequently asked questions
What does DCCV stand for?
DCCV stands for direct current cardioversion. It is a short procedure that uses a timed electric shock to return an abnormal heart rhythm to a normal one.
Is DCCV painful?
The shock itself would be uncomfortable, which is why people receive sedation and are asleep for it. Afterward some notice mild redness or soreness where the pads were.
Is cardioversion the same as defibrillation?
No. Cardioversion is synchronized to the heartbeat and is used when a person has a pulse, while defibrillation is an unsynchronized emergency shock for a heart in arrest.
Why is a TEE sometimes done before DCCV?
A TEE lets the team look closely at the upper heart chambers for a clot. Checking first helps lower the chance that a clot moves when the rhythm changes.