Dr Alvin Ng
Senior Consultant Nephrologist
- Bachelor of Medicine and Surgery (Auckland, New Zealand)
- Fellow of the Royal Australasian College of Physicians
- Fellow of the Academy of Medicine, Singapore (Renal Medicine)
Dr Alvin Ng
Senior Consultant Nephrologist
Resistant hypertension is when the patient’s high blood pressure is not controlled with three or more anti-hypertensive medications. This condition will cause further narrowing of blood vessels around the kidneys, which leads to inadequate oxygen supply to the kidney tissues. As a result, the kidneys will get scarred and sustain permanent damage. Complications such as kidney failure, stroke, heart attack or failure, aneurysm in abdominal aorta and dementia may occur.
Most people will not have symptoms. However, if the blood pressure is extremely high, a patient may suffer from headache, breathlessness, chest pain or leg swelling.
Lifestyle choices including being a smoker, lack of physical activity, consuming high-salt diet, and excessive alcohol consumption are the major risk factors for hypertension.
Other factors include a family history of high blood pressure, chronic kidney disease, renal artery stenosis (narrowing in the arteries leading to the kidneys), adrenal or thyroid disorders and sleep apnoea.
A chronic inflammatory disease, systemic lupus erythematosus can affect many parts of your body, including your skin, joints, kidneys, blood cells, heart and lungs.
In this rare disorder, also known as anti-GBM disease, the immune system creates antibodies to tissues in the lungs and kidneys. It can cause progressive and permanent damage to the kidneys.
In this condition, scarring is scattered among some of the glomeruli. This may be the result of another disease, or it may occur for no known reason.
Immunoglobulin A (IgA) is an antibody that's a first line of defense against infectious agents. IgA nephropathy occurs when deposits of the antibody accumulate in the glomeruli.
such as cpolyarteritis nodosa, granulomatosis with polyangiitis, eosinophilic granulomatosis with polyangiitis and Viral-associated glomerulonephritis (hepatitis B, hepatitis C and HIV virus).
Further investigations are recommended and this includes a kidney health check and imaging of the major blood vessels leading to the kidney arteries. Adopting a healthy lifestyle is an integral part of lowering blood pressure. Anti-hypertensive medications that are personalised to the patient, enduring that they are taken appropriately including identifying side effects that may hamper the tolerability of these medications. Occasionally, intervention is required in blocked kidney arteries to help improve the blood pressure.
Reach out to us for a consultation with Dr Alvin Ng.
English, Cantonese, Bahasa Indonesian, Bahasa Melayu, Hokkien
Dr Alvin Ng is a senior consultant nephrologist with over two decades of experience in kidney care. Prior to setting up his own practice, Dr Ng was the Director of Peritoneal Dialysis at Changi General Hospital and an executive committee member of the Singapore Society of Nephrology. He has held teaching appointments for medical students and residents; and is also a recipient of various service awards – a testament to the quality of care he provides.
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