What does a Holter monitor record?
A Holter monitor records electrical heart activity over a longer period than a brief office ECG. Portable monitors let clinicians look at the rhythm during everyday activities. The length of recording depends on the device and the reason for the test. Source: MedlinePlus: electrocardiogram and longer recordings (opens in a new tab).
What do PACs and PVCs mean?
These are names for early heartbeats. PACs begin in the upper chambers; PVCs begin in the lower chambers. The presence of a term on the report does not, by itself, tell you what treatment you need. Source: American Heart Association: PACs and PVCs (opens in a new tab).
Why does the symptom diary matter?
A diary helps your clinician relate symptoms to the recording. If you noted fluttering or pressed a symptom button, ask what the rhythm showed at that time. Keep the dates and times with the complete report. Source: MedlinePlus: electrocardiogram and longer recordings (opens in a new tab).
What if the monitor did not capture my usual episode?
Tell the clinician who ordered it. Different monitors can record for different lengths of time, and longer monitoring may help when symptoms are infrequent. Your clinician decides whether the existing recording answers the question or more evaluation is appropriate. Source: NHLBI: diagnosing heart rhythm problems (opens in a new tab).
How can I prepare the report for a review?
Bring the complete written report, the visit note explaining why it was ordered, and your symptom diary if you have one. Include your current medication list. A single highlighted line can leave out the context needed for a useful explanation.
For example, your question might be: “The report mentions early beats, but I do not understand whether those match the episodes I recorded.” This gives the conversation a focus without assuming a diagnosis.
Questions to ask your treating clinician
- What rhythm was recorded during the symptoms I marked?
- Did the monitor answer the original question?
- Which finding, if any, changes my follow-up plan?
- What does the reported frequency of early beats mean in my situation?
- Who should I contact if the symptoms change?
An educational review explains the existing written findings and helps organize these questions. It does not provide real-time rhythm monitoring or emergency assessment.
Want help understanding your own records?
Our $350 educational review focuses on one cardiology question and up to 40 relevant pages. It includes a 30-minute conversation, a written explanation, and questions for your treating team. Available to eligible adults in New York.
Use the records checklist