What Is Cardiac Monitoring?
Cardiac monitoring records the electrical activity of the heart over time to help identify rhythm abnormalities that may not appear during a standard office electrocardiogram.
Some rhythm problems occur only occasionally. A patient may experience palpitations, dizziness, fainting, shortness of breath, or an irregular heartbeat even though a brief EKG appears normal.
At Florida Heart & Vascular Institute, cardiac monitoring may include Holter monitoring or longer-term monitoring with an implantable loop recorder, depending on how often symptoms occur and the type of rhythm problem being investigated.
The goal is to collect useful rhythm information that can help your cardiovascular care team better understand your symptoms and determine the appropriate next step.
Heart Rhythm Problems Cardiac Monitoring May Help Evaluate
Palpitations
Palpitations may feel like fluttering, pounding, racing, skipped beats, or an irregular heartbeat. Because these symptoms can occur intermittently, longer-term monitoring may help determine whether they are associated with an abnormal heart rhythm.
Unexplained Dizziness
Dizziness or lightheadedness can have many causes, but in some patients it may be associated with changes in heart rate or rhythm. Cardiac monitoring can help determine whether a rhythm abnormality occurs around the time symptoms are experienced.
Fainting or Near-Fainting
Unexplained fainting or near-fainting may sometimes be related to an abnormal heart rhythm. When symptoms are infrequent or difficult to capture during routine testing, longer-term rhythm monitoring may be considered.
Irregular Heartbeat
Patients with suspected or known arrhythmias may need monitoring to evaluate heart rate patterns, rhythm changes, or how frequently an abnormal rhythm occurs.
Slow Heart Rate
A slow heart rate may be normal in some people, but it may also be associated with conduction problems or symptoms such as fatigue, weakness, dizziness, or fainting. Monitoring can help determine whether clinically significant bradycardia is present.
Fast Heart Rate
Episodes of a rapid heartbeat may occur suddenly and resolve before an office EKG can capture them. Ambulatory monitoring may help document these episodes and provide information about the type of rhythm involved.
When You May Need Cardiac Monitoring
Cardiac monitoring may be recommended when symptoms suggest a possible heart rhythm abnormality, but the problem is not consistently present during a routine examination or standard EKG.
Cardiac Monitoring May Be Considered If You Have:
- Recurrent palpitations
- A racing or irregular heartbeat
- Unexplained dizziness or lightheadedness
- Fainting or near-fainting
- Unexplained episodes of weakness
- Intermittent shortness of breath
- Symptoms that occur unpredictably
- A known arrhythmia requiring additional evaluation
- An abnormal EKG that needs further investigation
- Symptoms that were not captured during previous short-term testing
Monitoring May Also Be Used To:
- Evaluate how frequently an arrhythmia occurs
- Correlate symptoms with heart rhythm changes
- Detect intermittent abnormalities not seen on a routine EKG
- Monitor selected patients with known rhythm disorders
- Assess unexplained episodes that occur infrequently
- Evaluate unusually fast or slow heart rates
- Investigate recurrent fainting or near-fainting
- Support treatment and follow-up decisions
- Guide further electrophysiology or cardiology evaluation
Emergency Warning
Call 911 immediately for severe chest pain, severe shortness of breath, fainting with ongoing symptoms, sudden weakness or numbness, or other signs of a medical emergency.
Finding Rhythm Changes That May Be Easy to Miss
Heart rhythm symptoms can be difficult to diagnose when they occur only occasionally. FHVI evaluates the pattern of your symptoms, medical history, previous testing, and how frequently episodes occur to determine which type of monitoring may provide the most useful information.
- Electrocardiogram (EKG/ECG) — records the heart’s electrical activity at a specific point in time and may identify rhythm or conduction abnormalities.
- Symptom and medical history review — helps determine when symptoms occur, how long they last, and whether they may be related to heart rhythm.
- Holter monitoring — continuously records heart rhythm over an extended period to capture abnormalities that may occur during everyday activity.
- Longer-term rhythm monitoring — may be considered when symptoms occur less frequently and are difficult to capture with short-term monitoring.
- Implantable loop recorder — provides extended heart rhythm monitoring for selected patients with infrequent or unexplained symptoms.
- Cardiac imaging or laboratory testing — may be used when additional evaluation is needed to identify other cardiovascular factors that could contribute to symptoms.
- Electrophysiology evaluation — may be recommended when monitoring identifies or strongly suggests an abnormal heart rhythm that requires specialized rhythm care.
The Best Monitor Depends on How Often Symptoms Occur
Standard EKG
Best suited for rhythm abnormalities that are present at the time of the office evaluation.
Holter Monitoring
May be appropriate when symptoms or rhythm abnormalities occur frequently enough to be captured during continuous short-term monitoring.
Extended External Monitoring
May be considered when symptoms occur less frequently and additional monitoring time is needed.
Implantable Loop Recorder
May be considered for selected patients with infrequent, unexplained symptoms that are difficult to capture with external monitoring.
Specialist Evaluation
If monitoring identifies a significant rhythm abnormality, your care team may recommend further evaluation by a cardiac electrophysiology specialist.
Benefits and Considerations of Cardiac Monitoring
Cardiac monitoring is designed to record heart rhythm information during everyday life and help connect symptoms with electrical activity. The benefits and considerations depend on the type of monitor used and each patient’s clinical needs.
Potential Benefits
- Captures Intermittent Rhythm Changes Monitoring may detect abnormalities that do not appear during a brief office EKG.
- Connects Symptoms With Heart Rhythm Recorded rhythm data can help determine whether palpitations, dizziness, or fainting occur during an abnormal rhythm.
- Supports More Accurate Diagnosis Longer monitoring periods may provide additional information about the frequency and pattern of rhythm changes.
- Guides Treatment Decisions Findings may help determine whether observation, medication, electrophysiology evaluation, or another treatment pathway is appropriate.
- Supports Ongoing Follow-Up Monitoring can be used as part of continued care for selected patients with known or suspected arrhythmias.
Considerations
- Skin Irritation External monitor patches or electrodes may cause temporary skin irritation in some patients.
- Symptoms May Not Occur During Monitoring Short-term monitoring may not capture an abnormal rhythm if episodes are infrequent.
- Device Care Is Important External monitors may require specific instructions regarding activity, bathing, electrode placement, or symptom recording.
- Implantable Monitoring Requires a Procedure An implantable loop recorder is placed beneath the skin and carries procedure-specific considerations such as bruising, discomfort, or infection risk.
- Results Require Clinical Interpretation Recorded rhythm changes must be interpreted together with symptoms, medical history, and other cardiovascular findings.
Having Palpitations, Dizziness, or an Irregular Heartbeat?
If your symptoms come and go, cardiac monitoring may help your care team capture important rhythm information and determine whether further evaluation is needed.
Cardiac Monitoring Services
Core Cardiac Monitoring
These monitoring options are used to record the heart’s electrical activity over time and help identify rhythm abnormalities that may not appear during a brief office EKG.
Holter Monitoring
Holter monitoring uses a portable device to continuously record the heart’s electrical activity during normal daily activities. It may help identify rhythm abnormalities associated with palpitations, dizziness, irregular heartbeats, or other recurring symptoms.
Implantable Loop Recorder
An implantable loop recorder is a small device placed beneath the skin to provide extended heart rhythm monitoring. It may be considered for selected patients with infrequent or unexplained symptoms that have not been captured with shorter-term monitoring.
Additional Rhythm Monitoring
Longer or more specialized external monitoring may be considered when symptoms occur less predictably or when additional rhythm information is needed.
Event Monitoring
Mobile Cardiac Telemetry
Mobile cardiac telemetry is a wearable monitoring approach that can record heart rhythm during daily activity and transmit selected rhythm information for review. It may be considered when more continuous external rhythm surveillance is clinically appropriate.
Ambulatory ECG Monitoring
Related Rhythm Evaluation & Device Follow-Up
Rhythm monitoring is often part of a broader care pathway that may include diagnostic testing, implanted-device follow-up, and specialized electrophysiology evaluation.
Electrocardiogram (EKG)
Pacemaker Monitoring & Device Checks
ICD & CRT Device Monitoring
Cardiac Electrophysiology Evaluation
When monitoring identifies or strongly suggests a significant rhythm abnormality, patients may be referred for specialized electrophysiology evaluation. Additional testing or treatment may be recommended based on the rhythm identified, symptoms, and overall cardiovascular health.
Experienced Providers for Heart Rhythm Evaluation
Dr. Asad Qamar, MD
Interventional Cardiologist
- Board Certified
- 30+ Years of Experience
- Founder & CEO
Claudio F. Manubens, MD
Interventional Cardiologist
- Board Certified
- 25+ Years Experience
- Former Chief of Cardiology
Dr. Oji Joseph, MD
Invasive Cardiologist
- Board Certified
- 20+ Years Experience
- Interventional Cardiology
Syed Imran Ali, MD
Interventional Cardiologist
- Board Certified
- 20+ Years of Experience
- Peripheral Vascular Specialist
Jeveria Ali, DNP
Adult-Gerontology Acute Care NP
- Board-Certified AGACNP
- 20+ Years Experience
- Cardiovascular & Acute Care
Find an FHVI Cardiac Monitoring Location Near You
Request Your Appointment
Complete the form below with your preferred cardiologist, location, and reason for visit. An FHVI team member will contact you to confirm availability and next steps.
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Modern cardiac and vascular testing supports accurate evaluation and informed care decisions.
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Care recommendations are based on each patient’s symptoms, medical history, diagnostic findings, and individual needs.
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When appropriate, FHVI offers catheter-based and other minimally invasive treatment options for selected cardiovascular conditions.
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Frequently Asked Questions
Cardiac monitoring records the electrical activity of the heart over time to help identify intermittent rhythm abnormalities and determine whether symptoms are associated with changes in heart rhythm.
A monitor may be recommended if you experience palpitations, dizziness, fainting, irregular heartbeats, or other symptoms that may not occur during a standard EKG.
A Holter monitor is a portable device that continuously records heart rhythm while you carry out normal daily activities.
An implantable loop recorder is a small device placed beneath the skin to provide long-term heart rhythm monitoring. It may be useful when symptoms occur infrequently.
External cardiac monitoring is noninvasive, although electrode patches may cause mild skin irritation. Implantable loop recorders require a small procedure, and your care team will explain what to expect.
Many patients can continue most normal activities, but specific restrictions depend on the device being used. Follow the instructions provided by your care team.
Follow the instructions provided with your monitor. Some devices allow you to mark or record when symptoms occur so the care team can compare the event with your heart rhythm.
Your cardiovascular provider will review the findings along with your symptoms and medical history. Depending on the result, additional testing, medication changes, electrophysiology evaluation, or other treatment may be considered.
The length of monitoring varies based on how frequently symptoms occur and the type of rhythm abnormality being investigated.
Cardiac monitoring may help detect atrial fibrillation and other rhythm abnormalities when they occur during the monitoring period.
Coverage depends on the type of monitor, medical necessity, insurance plan, and authorization requirements. Patients should verify benefits with FHVI or their insurance provider.