MedlinePlus Medical Encyclopedia: Button batteries

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Button batteries

Contents of this page:
Definition Poisonous Ingredient Where Found Symptoms Home Treatment	Before Calling Emergency Poison Control, or a local emergency number What to expect at the emergency room Expectations (prognosis)

Definition

Button batteries are small (less than one centimeter in diameter) batteries usually used to power wrist watches and small clocks. Children often accidentally inhale or swallow them due to their size and availability.

Poisonous Ingredient

These batteries can potentially cause necrosis (breakdown) of tissues in the GI tract, depending on where they become lodged. The substance in the battery does not necessarily cause any systemic toxicity, but they can cause life-threatening perforations (holes) in the esophagus (food pipe).

Where Found

These small batteries can be found in:

cameras
hearing-aids
watches
calculators
penlights

Symptoms

Inhaled batteries may cause cough, respiratory distress, or even complete respiratory failure. If the aspiration is undetected, it may manifest later as a pneumonia.

Swallowed batteries may cause no symptoms at all, but if they become lodged in the esophagus or stomach, they may cause chest pain, abdominal pain, vomiting, vomiting blood, severe cardiovascular collapse due to esophageal perforation, or death.

Home Treatment

Seek emergency medical care immediately. Do NOT induce vomiting. If the material from open or leaking battery gets on the skin or in the eyes, flush with lots of water for at least 15 minutes. If swallowed, drink water or milk IMMEDIATELY. If the patient is vomiting, continue giving water or milk.

Before Calling Emergency

Determine the following information:

the patient's age, weight, and condition
the name of the product (ingredients and strengths if known)
the time it was swallowed
the amount swallowed

Poison Control, or a local emergency number

See Poison Control centers for telephone numbers and addresses. Take the container with you to the emergency room.

What to expect at the emergency room

Some or all of the following procedures may be performed.

If the battery has been inhaled and is causing life-threatening airway obstruction, it will either have to be removed in the ER by direct laryngoscopy, or removed immediately by surgery.
If the battery has been inhaled into the lungs, it will have to be removed immediately with a bronchoscope.
An X-ray will be taken to locate the battery.
If the battery is swallowed, it may have to be removed physically (with an endoscope) if it is still in the esophagus or stomach.
If the battery has passed through the stomach into the small intestine, the usual treatment is to check another X-ray in 1 to 2 days to make sure the battery is moving along the GI tract. The battery should then be followed by periodic X-rays until it passes in the stool. If any symptoms develop, it may indicate that the battery has moved back up into the stomach and will have to be removed with an endoscope.

Expectations (prognosis)

The outcome depends entirely upon whether it is inhaled and causes respiratory compromise, or if it is swallowed and causes esophageal or stomach perforation. Any of those situations are immediately life-threatening, and survival depends on the time to treatment and the success of emergency treatment.

Most swallowed batteries, however, do pass through the GI tract without causing any serious damage.

Update Date: 4/16/2004

Updated by: Cherlin Johnson, M.D., Department of Emergency Medicine, University of Southern California, Los Angeles, CA. Review provided by VeriMed Healthcare Network.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.