Duncan B. Sparrow is a cardiologist based in Darlinghurst, NSW, at 384 Victoria Street. His work focuses on heart health, especially for people dealing with congenital (from birth) conditions. For many families, the heart part is only one piece of a bigger picture, and Duncan aims to help with clear answers and steady follow-up.
In many cases, patients seen in his clinic may have congenital heart disease (CHD) or ongoing heart issues linked to other birth conditions. He also looks after families where cardiac problems can show up alongside conditions such as VACTERL association, diaphragmatic hernia, or cerebral hypoxia. That doesn’t mean he ignores the bigger issues, but the heart side is where his care starts and stays strong.
Duncan’s practice also includes people with heart rhythm and heart muscle problems over time. One example is familial hypertrophic cardiomyopathy, where the heart muscle can become thicker than normal. He works through what symptoms might mean, what tests are usually done, and what changes may be needed as someone grows.
He also treats pericarditis, which is inflammation around the heart. This can feel scary, especially when symptoms come on quickly. In consultations, Duncan explains what’s going on in plain language, and helps patients and carers understand the usual next steps.
His clinic care suits both new referrals and follow-up visits. Over time, he’s built a calm approach for complex cases, where plans can need to be updated as test results come in. At times, that includes coordinating care with other specialists so the plan makes sense as a whole.
While details about education, publications, and clinical trials aren’t listed here, the focus is consistent: practical cardiology care for people with complex heart-related conditions, with communication that stays simple and grounded.