Should I check my pulse or blood pressure regularly if I have arrhythmia? 

When you have been diagnosed with an arrhythmia, your body’s internal ‘metronome’ can feel unreliable. It is natural to want to monitor your pulse and blood pressure to ensure everything is functioning correctly. In the UK, clinicians encourage a degree of ‘self-surveillance,’ as your data can help your GP or cardiologist fine-tune your medications. However, there is a delicate balance to strike. While checking your pulse can catch a silent episode of Atrial Fibrillation, checking it too frequently can lead to ‘cardiac anxiety,’ which releases adrenaline and can ironically trigger the very palpitations you are trying to avoid. This article explores whether you should monitor your vitals regularly, the most accurate ways to do so, and how to use that data effectively without letting it dominate your daily life. 

What We’ll Discuss in This Article 

• The clinical value of manual pulse checks versus automatic blood pressure monitors. 

• How to correctly perform a manual pulse check to identify an ‘irregular’ rhythm. 

• The ‘monitoring trap’: When checking too often can increase anxiety and triggers. 

• Why blood pressure monitors sometimes give ‘error’ messages during an arrhythmia. 

• Identifying the ‘red flag’ readings that require medical attention. 

• The role of modern wearables (smartwatches) in clinical heart monitoring. 

• Emergency safety guidance for sudden or severe cardiac symptoms. 

1. Checking Your Pulse: The Manual Gold Standard 

While digital devices are convenient, the manual pulse check remains a vital skill for anyone with an arrhythmia. It allows you to feel the ‘character’ of the rhythm, whether it is regular, regular with occasional skips, or ‘irregularly irregular’ (a hallmark of Atrial Fibrillation). 

How to Check Your Pulse 

1. Find the Radial Artery: Place two fingers (index and middle) on the inside of your wrist, just below the base of your thumb. 

2. Apply Gentle Pressure: Press until you feel the beat. Do not use your thumb, as it has its own pulse. 

3. Count the Beats: Count for 30 seconds and multiply by two to get your beats per minute (BPM). 

4. Assess the Rhythm: Is it steady like a clock, or does it jump around? 

When to check: The British Heart Foundation recommends checking your pulse occasionally, perhaps once a week, or whenever you feel ‘odd,’ breathless, or dizzy. 

2. Checking Your Blood Pressure 

High blood pressure is a leading cause of heart rhythm issues, so monitoring it is essential for long-term management. However, arrhythmias can make automatic monitors less accurate. 

• The ‘Error’ Message: Many automatic blood pressure cuffs rely on a steady rhythm to calculate pressure. If your heart is in Atrial Fibrillation, the monitor may struggle to find a reading or show an ‘IHB’ (Irregular Heart Beat) symbol. 

• Accuracy: If you have a chaotic rhythm, an automatic cuff may under- or over-estimate your blood pressure. 

• The Clinical Guideline: According to NICE guidance, if you have Atrial Fibrillation, your GP should ideally check your blood pressure manually with a stethoscope (sphygmomanometer) for the most accurate result. 

3. The Role of Smartwatches and Wearables 

Wearable technology has changed the way we monitor arrhythmias in the UK. Devices like the Apple Watch or KardiaMobile can record a ‘Lead-I’ ECG, which is much more informative than a simple pulse check. 

• Pros: They can ‘capture’ a rhythm exactly when you feel a symptom, providing your doctor with evidence that a 10-second hospital ECG might miss. 

• Cons: They can lead to over-monitoring. Looking at your heart rate every five minutes can create a ‘feedback loop’ of stress. 

Doctor’s Advice: Use wearables as ‘event recorders’ (when you feel a symptom) rather than ‘constant monitors.’ 

4. When to Be Concerned: The Red Flags 

Knowing when a reading is a problem is more important than the reading itself. 

Reading Type	Reassuring Range	When to Call your GP
Resting Pulse	60–100 BPM.	Consistently >120 or <50 BPM.
Pulse Rhythm	Steady/Consistent.	‘Irregularly irregular’ (chaotic).
Blood Pressure	120/80 to 140/90.	Consistently >150/95.
Symptoms	Feeling normal.	Fainting, Chest Pain, Breathlessness.

5. Avoiding the ‘Monitoring Trap’ 

The goal of treatment is to allow you to live a normal life, not to turn you into a full-time medical technician. 

1. Don’t Check During Stress: Your heart rate should be high when you are stressed or active. Checking it during a panic attack will only show a high number that increases your panic. 

2. Pick a Routine: If your doctor has asked for readings, do them at the same time (e.g., Tuesday mornings at rest) rather than randomly throughout the week. 

3. Trust Your Symptoms: How you feel is often more important than the number on a screen. If you feel great but your watch says your heart rate is 105, don’t overthink it. If you feel faint but the watch says 70, you still need to see a doctor. 

Conclusion 

Regularly checking your pulse and blood pressure is a helpful way to partner with your healthcare team in managing an arrhythmia. It provides ‘real-world’ data that helps confirm if your medications are working and whether your heart rate is within a safe zone. However, home monitoring should be a tool, not an obsession. Manual pulse checks are the most reliable way to assess your rhythm, while blood pressure checks help manage the underlying causes of heart strain. By keeping a calm, occasional record of your vitals and focusing on how you feel physically, you can maintain control over your heart health without letting the numbers cause unnecessary anxiety. 

If you experience severe, sudden, or worsening symptoms, call 999 immediately. 

Authority Snapshot (E-E-A-T Block) 

This article was written by Dr. Stefan Petrov, a UK-trained physician with an MBBS and certifications in Advanced Cardiac Life Support (ACLS). Dr. Petrov has extensive hands-on experience in general medicine and intensive care units, where monitoring vital signs is the foundation of patient management and clinical decision-making. This guide follows NHS and NICE standards to provide an evidence-based overview of home monitoring for heart rhythm patients.