Echocardiogram vs ECG: which heart test do you actually need?
ECGs and echocardiograms measure completely different things about your heart. Here's how to tell which one your symptoms call for, and what each one costs in Kenya.
Patients often ask us whether they need an ECG or an echocardiogram. The short answer: an ECG checks the heart's electrical signals; an echocardiogram is an ultrasound that shows the heart's structure and how it's pumping. They answer different questions and are often ordered together.
What an ECG does
An electrocardiogram records the electrical activity that drives every heartbeat. It's the test you want when the symptom is rhythm-related — palpitations, fluttering, missed beats — or when you need to screen for a previous silent heart attack, ischemia, or electrolyte problems. It takes five minutes, is painless, and a 12-lead tracing costs around KES 1,500 – 3,500 in Kenya.
What an echocardiogram does
An echo uses ultrasound to image the heart in motion. It shows the size of each chamber, the thickness of the walls, how well the valves open and close, and the ejection fraction — the percentage of blood the left ventricle pumps with each beat. It's the test you want when the symptom is structural or pumping-related: shortness of breath, ankle swelling, fatigue out of proportion to activity, or a heart murmur.
How a doctor decides which to order
- Palpitations or known arrhythmia → ECG first; echo if structural cause suspected.
- Chest pain → ECG first to rule out acute ischemia; echo if symptoms persist.
- New shortness of breath or ankle swelling → echo to assess pump function.
- Heart murmur on auscultation → echo to image the valves.
- Pre-operative clearance over age 50 → both, often as a package.
- Family history of sudden cardiac death → both as part of a screening assessment.
Mobile cardiac testing in Kenya
Both tests can be done at home with portable equipment. A mobile ECG runs around KES 2,500 – 4,000 including a cardiologist's interpretation. A mobile echocardiogram is KES 6,000 – 12,000 depending on the complexity. For elderly patients, post-operative patients, or anyone where a hospital visit is genuinely difficult, having both done in one home visit saves time and money.
When you need both, and when one is enough
Routine annual check-ups for healthy adults under 50 don't need either unless symptoms call for them. For anyone with hypertension, diabetes, a family history of heart disease, or new cardiac symptoms — ask your doctor about the combined package rather than booking them separately.