Heart health, explained

Plain-English notes from Dr Sultan on symptoms, tests and the questions patients ask most. General information only — never a substitute for an appointment.

Featured · PoTS & Long COVID

Dizzy when you stand up? What PoTS is — and what it is not

Feeling faint, foggy or racing when you stand is real, and it can be measured. This article explains what postural tachycardia syndrome is, how it is diagnosed with a stand test or tilt-table test, and the first steps that help.

By Dr Ayyaz Sultan · 18/09/2026 · 7 min read

Latest articles

Read first, then ask better questions

Why some blood pressure stays high despite three tablets

What “resistant hypertension” means, the hidden causes worth checking, and how treatment is adjusted.

11/09/2026 · 6 min read

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Tests explained

Wearing a Holter monitor: what to expect, day by day

From fitting to results — how to keep a symptom diary that makes the recording far more useful.

04/09/2026 · 5 min read

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Palpitations: when they are harmless and when to get checked

Most are benign. These are the patterns, triggers and warning signs that mean it is worth a proper look.

28/08/2026 · 6 min read

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PoTS & Long COVID

Long COVID and the heart: what we know so far

Why breathlessness and a racing heart can linger after infection, and how a careful assessment helps.

21/08/2026 · 8 min read

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Your cardiometabolic health: the numbers worth knowing

Blood pressure, cholesterol, blood sugar and waist size — what each tells you and what you can change.

14/08/2026 · 6 min read

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Seeing a cardiologist by video: how it works

What a remote consultation can and cannot do, how tests are arranged near you, and how to prepare.

07/08/2026 · 4 min read

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