Expert London Cardiologist for your Heart Health
Expert Cardiology Care
Expert diagnosis and personalised treatment for the full range of cardiac conditions, from Dr Sukhjinder Nijjer, Consultant Cardiologist at Harley Street and across London.
Whether you have been referred by your GP, are experiencing new symptoms, or simply want peace of mind about your heart health, Dr Nijjer provides expert assessment across the full range of cardiac conditions. This page is organised into three sections: underlying cardiac conditions, common symptoms that prompt specialist referral, and the treatments and procedures Dr Nijjer performs. Consulting at One Heart Clinic, 68 Harley Street and across his network of London hospitals, each appointment combines the latest diagnostic technology with genuinely personalised, unhurried care. If you are considering a referral and want guidance on what to look for, read our guide to choosing a cardiologist.
Cardiac Conditions
The structural and electrical conditions of the heart that Dr Nijjer diagnoses and manages — from coronary artery disease and heart failure through to inherited conditions of the heart muscle.
The leading cause of death in the UK, coronary heart disease develops when fatty deposits narrow the arteries supplying your heart. Dr Nijjer uses advanced iFR pressure-wire technology and intravascular imaging to precisely assess disease severity and guide the most effective treatment.
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Hypertension is the UK's leading preventable cause of heart attack, stroke, and kidney disease — yet it rarely produces symptoms until damage is done. Dr Nijjer provides thorough cardiovascular risk assessment and tailored medical management to control blood pressure and protect long-term heart health.
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Atrial fibrillation (AF) is the most common sustained heart rhythm disorder in adults, causing an irregular and often rapid heartbeat that significantly raises stroke risk. Dr Nijjer provides comprehensive AF assessment, anticoagulation advice, and coordinated rate or rhythm control.
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Ectopic beats are extra heartbeats that occur outside the heart's normal rhythm, often felt as a 'thud,' 'skip,' or flutter in the chest. While usually benign, frequent ectopics can be distressing and sometimes indicate an underlying cardiac condition that warrants specialist evaluation.
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Elevated cholesterol is one of the most important modifiable risk factors for heart attack and stroke. Dr Nijjer provides comprehensive lipid assessment — including advanced markers such as Lp(a) and ApoB — alongside personalised treatment with modern therapies including PCSK9 inhibitors and Inclisiran.
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Heart failure occurs when the heart cannot pump blood efficiently, causing breathlessness, fluid retention, and fatigue. Dr Nijjer provides specialist assessment of heart function, identifies the underlying cause, and optimises modern guideline-directed therapy including ARNI, SGLT2 inhibitors, and device therapy.
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Disease of the heart valves — including aortic stenosis and mitral regurgitation — can place significant strain on the heart over time. Dr Nijjer provides detailed echocardiographic assessment to determine disease severity and advise on the optimal timing and type of intervention.
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Cardiomyopathy — disease of the heart muscle — encompasses hypertrophic (HCM), dilated (DCM), and other forms. Dr Nijjer provides expert assessment, family screening, risk stratification, and personalised management including device therapy and genetic testing where appropriate.
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A heart attack occurs when a coronary artery becomes suddenly blocked, cutting off blood supply to part of the heart muscle. Dr Nijjer provides primary coronary intervention, comprehensive post-MI assessment, and personalised long-term management to protect your heart and reduce future risk.
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Chest pain with normal coronary arteries — caused by dysfunction in the heart's smaller vessels. Affects a significant proportion of patients with INOCA, particularly women. Requires specialist physiological testing with IMR and CFR measurements to diagnose accurately.
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Recurrent chest pain caused by episodic constriction of a coronary artery — often at rest, at night, or in cold weather. Also known as Prinzmetal or vasospastic angina. Diagnosed with intracoronary acetylcholine provocation testing during angiography.
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A coronary artery that runs within the heart muscle rather than on its surface, causing the muscle to compress the artery with each heartbeat. Can cause exertional angina and ischaemia. Assessed with pressure wire and dobutamine provocation testing.
Read more →Symptoms
Common presenting complaints that warrant specialist cardiology assessment. Early evaluation leads to accurate diagnosis and more effective treatment.
Chest pain or pressure — particularly on exertion — requires prompt specialist evaluation. As an expert in coronary physiology and imaging, Dr Nijjer can pinpoint the cause precisely, whether that is angina, coronary spasm, microvascular disease, or a non-cardiac source.
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Angina is chest discomfort caused by restricted blood flow to the heart muscle, typically triggered by exertion or stress. With pressure-wire physiology and intravascular imaging, Dr Nijjer can determine the precise severity of your coronary disease and tailor treatment accordingly.
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Unexplained breathlessness — particularly on exertion or when lying flat — can signal coronary artery disease, heart failure, or a valve problem. Specialist cardiological assessment is essential to identify the cause and begin targeted treatment before the condition progresses.
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Palpitations — an awareness of a rapid, irregular, or forceful heartbeat — are common and often harmless, but can sometimes signal an underlying rhythm disorder. Dr Nijjer will assess whether your palpitations are related to atrial fibrillation, ectopic beats, or another treatable cause.
Read more →Treatments & Procedures
Specialist procedures performed by Dr Nijjer at leading London cardiac centres, using the most advanced equipment available.
Coronary angioplasty (PCI) is a minimally invasive procedure to open narrowed or blocked arteries using a balloon and stent. Dr Nijjer is one of the UK's most experienced complex angioplasty operators, with expertise in calcified arteries, rotational atherectomy, shockwave lithotripsy, and coronary laser treatment.
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A pacemaker is a small implanted device that monitors and regulates the heart's electrical rhythm when it beats too slowly. Dr Nijjer is experienced in pacemaker implantation for bradycardia, heart block, and other conduction disorders, helping patients maintain a safe and active daily life.
Read more →Dr Nijjer sees patients at Harley Street and across London, often within the same week. GP referrals and self-referrals are equally welcome.