Heart Rhythm Monitoring — KardiaMobile

A single ECG captures ten seconds of your heart. Your symptoms do not follow that schedule.

They come at 3am, when you roll over in bed. They arrive mid-sentence in a meeting. They visit you on the stairs, on the morning commute, during the moment you have been dreading all week. A resting ECG, however careful, is a photograph of a river taken from a bridge. It tells you the river exists. It does not tell you what it does at night.

The diagnostic gap

Intermittent palpitations are, almost by definition, likely to be absent when you are sitting still in a clinic. The resting ECG has immense value — it can detect structural abnormalities, conduction problems, and baseline rhythm. But when the ECG is normal, the question “what is your heart doing when you feel that flutter?” remains unanswered.

This is the diagnostic gap. It is not a failure of medicine. It is a challenge of timing. And the solution is not a better test in a clinic. It is recording your rhythm where your life actually happens.

The KardiaMobile — one week, triggered by you

Symptoms are infrequent, unpredictable, and tend to vanish the moment you reach for your phone. The KardiaMobile is a small, pocket-sized device that you activate yourself at the exact moment you feel something.

Place two fingers on the sensors. Thirty seconds. A medical-grade single-lead ECG. Each recording is timestamped and stored, building a dataset of your actual symptomatic episodes across your one-week monitoring period — not approximations, not descriptions, but the electrical trace of your heart at the moment that matters.

This is the closest thing to being there with a monitoring device at the moment the symptom occurs. For patients with infrequent but distressing episodes, one week of KardiaMobile recording frequently provides the definitive answer that years of reassurance could not.

What the data reveals

Extended monitoring answers questions that a resting ECG cannot. Is the symptom associated with a genuine rhythm change, or does the ECG trace show a normal rhythm at the moment of maximum distress? Are there ectopic beats? How frequent? Do they cluster at night, after meals, during exertion? Is there any pattern at all?

The data does not always find pathology. Often, it finds the absence of it — and that too is valuable. A recording that shows a normal rhythm at the moment of the patient’s most frightening episode is a different kind of information from simple reassurance. It is evidence.

The sleep parable

Miner and colleagues presented preliminary findings (SLEEP 2016 conference abstract) on patients with premature ventricular contractions — the most common form of ectopic beat — tracked alongside their sleep quality. The same patients. The same hearts. As a preliminary observational signal, disrupted-sleep nights were associated with approximately 33% higher PVC burden, with a similar reduction on undisturbed nights. These are exploratory abstract-level findings, not a peer-reviewed paper.

The intervention was not a drug. It was not an ablation. It was sleep. This is not to say that better sleep cures arrhythmia. It is to say that the heart does not exist in isolation from the rest of the body. What happens in the night-time body shows up in the daytime rhythm — and only extended monitoring can see both.

How monitoring fits within OpenPalp

Monitoring is not the end of the journey. It is the beginning of understanding.

The OpenPalp pathway runs as follows:

1. Clinic appointment — focused clinical consultation, history, and a clear plan. Free.
2. 12-lead ECG (optional) — a standard resting 12-lead ECG on the day, interpreted by Dr Ahmad. £49.
3. Home monitoring (optional) — KardiaMobile loaned for one week of event recording, with the self-guided booklet. £70.
4. Self-guided booklet — structured, evidence-based support: breathing, triggers, lifestyle, exercise, understanding. Included with the monitor.
5. Understand — you review your own recordings and email Dr Ahmad with any concerns. There is no follow-up appointment.

You can open the Kardia app at any time to review your recordings, and email Dr Ahmad about any trace that concerns you.

The turning point

Most people who undergo extended heart rhythm monitoring expect to be told what is wrong with them. What they most commonly find is something more useful: they learn what their symptoms actually are, and what in their life drives them.

“Most people are surprised not by what the monitoring finds, but by what they learn about the link between their life and their rhythm.”

Caffeine consumed at 4pm. Three consecutive nights of poor sleep. A period of sustained workplace stress. These do not show up on a resting ECG. They show up across one week of data, in the quiet pattern of a heart responding honestly to the life it lives.

That is what extended monitoring is for. Not to catch a catastrophe. To understand a rhythm.