What is an irregular heart rhythm (arrhythmia) ?

An arrhythmia is an occasional or consistent problem with the rhythm or rate of your heartbeat. Your heart may be beating too fast, too slow, or beating with an irregular rhythm. During an arrhythmia, some people may feel a fluttering in their chest or that their heart is suddenly racing.

Fatigue, lightheadedness or fainting may also be symptoms of an arrhythmia. Some arrhythmias do not cause any symptoms. There are many types of arrhythmias. Some arrhythmias are harmless, but some can be serious or even life-threatening. If an arrhythmia is severe or lasts long enough to affect how the heart works, it may prevent the heart from pumping enough blood to the body.

Even serious arrhythmias can be successfully treated. Before treatment your doctor must first determine where in the heart an arrhythmia may be happening and whether or not it is abnormal.



How is the Zio monitor applied?

This video offers easy you step by step instructions.

What is the Zio system doing?

The Zio monitor is recording and storing every heartbeat while you are wearing it. Your physician will use the data recorded by the monitor and analyzed by iRhythm to diagnose your heart rhythm and figure out reasons for your irregular heartbeat, and determine a proper course of action.

How long am I supposed to wear the Zio monitor?

Wear the Zio monitor according to your physician prescribed wear time but no longer than 14 days. NOTE: Based on individual wear experiences your actual wear time may be shorter than prescribed.

Are there any warnings or precautions that I need to be aware of while wearing the Zio monitor?

Yes. The Zio system should not be worn by patients with known allergic reactions to adhesives or hydrogels or who have a family history of adhesive skin allergies; in combination with external cardiac defibrillators or high frequency surgical equipment; near strong magnetic fields or devices such as MRI; on patients with a neuro-stimulator, as it may disrupt the quality of ECG data; on patients who do not have the competency to wear the device for the prescribed monitoring period. Please refer to your Patient Instructions & Button Press Log booklet for further information regarding possible skin irritations while wearing the Zio monitor.

What should I do if I feel a symptom? How do I record any symptoms I experience?

If you feel a symptom, such as a racing heart or fluttering in your chest, press the button located in the center of the Zio monitor. Use the “Button Press Log” section of the Patient Instructions Booklet or the myZio app (iPhone or Android) or the myzio.com website to add a description of your symptoms and the date and time of the button press.

Please choose either the booklet or the myZio app (iPhone or Android) or the myzio.com website for recording your symptoms, but not both. While pressing the button is important to mark the time of a symptom, the Zio monitor is recording every heartbeat whether the button is pressed or not.

Recording your symptoms and activities gives your physician additional information about what potential heart beat irregularity may have caused the symptom. While this is useful information to include, the more important thing is to press the button.

What do I do at the end of a wear period?

At the end of the time your doctor instructed you to wear the Zio monitor it’s very important for you to send it to iRhythm Technologies the day you remove the monitor so we can analyze your heart activity recorded by the monitor and provide the doctor your comprehensive Zio report.

First, follow the monitor removal directions in your Patient Instructions and Button Press Log booklet. Then, simply place the Zio monitor in the convenient postage pre-paid return box, and mail it at the Post Office, drop it in a United States Postal System (blue) mailbox or give it to your mail carrier. The return address is already printed on the box.

Who do I call if I have questions about the Zio monitor?

Call iRhythm Customer Service at 1-888-693-2401.

How do I care for the Zio monitor while I'm wearing it?

For the first 24 hours of wear time, please avoid getting the Zio monitor wet in the shower or by excessive sweating during exercise. This will allow the special adhesive to stick to your skin effectively without falling off during the rest of your wear period.

After 24 hours you may shower, exercise and carry on with your regular activities. It is worn while you sleep, so there is no need to remove the Zio patch at night or change the patch or charge the battery. The Zio monitor will keep recording as long as the patch remains attached to you.

Can I be active and exercise while wearing the Zio monitor? What activities should I avoid?

Yes, you may exercise moderately, but excessive sweating can cause the monitor to slide, become loose, fall off, and shorten wear time. Avoid activities that cause excessive sweating. In addition, the ZIO Patch should not be submerged in water, therefore, activities such as swimming should be avoided.

Can I shower with the Zio monitor on?

Yes, but showers should be brief. Keep soaps and lotions away from the Zio monitor. When towel-drying, hold the patch down with one hand. Press the monitor against your skin to make sure it is secure.

Can I take a bath?

Yes, but keep the Zio monitor above water.

Can I go swimming or in a hot tub?

No. The Zio monitor should not be submerged in water.

Can I travel with the Zio monitor on?

Yes. If questioned during security screening, show the security statement provided in the Patient Instructions & Button Press Log booklet.

What if I forget to press the button when I feel a symptom?

While pressing the button is important, the Zio monitor is designed to record every heartbeat, whether or not you press the button.

What if I press the button but forget to write down the information in the booklet?

While the Button Press Log information is useful, pressing the button indicates that you felt your symptoms at that time.

What if I don't have symptoms?

That's okay. The Zio monitor is designed to capture every heartbeat, and iRhythm will be able to provide a comprehensive Zio report to your physician.

How do I know the Zio monitor is working?

When the monitor was applied to your chest, the staff at your physician’s office made sure that the monitor was working correctly. While working properly, the monitor will not flash or make any sound.



What if the Zio monitor flashes orange while I am wearing it?

If you see the Zio monitor flashing orange, it just means that the monitor is not well attached to your skin; this does not mean there is a problem with your heart.

Press evenly on the monitor for 3 to 5 minutes. If flashing persists or reoccurs, call iRhythm Customer Service at 1-888-693-2401.

What should I do if the Zio monitor falls off?

Call iRhythm Customer Service at 1-888-693-2401.

Is it normal for the Zio monitor to move slightly from its original position?

Yes. The Zio monitor may move slightly from its original position. A blue gel may become visible under the wings of the monitor.

Is it normal for the Zio monitor wings to become cloudy?

Yes, the wings of the monitor may appear cloudy after a few days of wear.

Is it normal to experience skin irritation or itchiness in the areas of the Zio monitor?

Some patients have reported minor skin irritation and/or itching while wearing the Zio monitor. If the irritation or itching is severe or hives or blisters develop please call iRhythm Customer Service at 1-888-693-2401.



Will I have any out-of-pocket costs with the Zio system?

Depending on your medical insurance plan and factors such as your deductible status, there may be a cost to you for the Zio system. Please refer to our Insurance and Billing page to learn more about your possible costs.