EP115: Misunderstanding, Misinterpretation, Mismanagement, and Misfortune

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Podcast Summary Dr. Warrick Bishop is a practicing cardiologist and author dedicated to patient education about heart health. In this episode, he discusses a real case involving a patient named Trevor, a 69-year-old man whose shortness of breath led to cardiac imaging that revealed high-risk coronary artery disease features. The episode illustrates how misinterpretation of imaging results and poor communication between healthcare providers can lead to dangerous undertreatment. Key Takeaways: Treadmill stress tests are functional tests that show how well the heart works under stress, but they don't reveal the anatomical condition of arteries or plaque buildup. CT scans provide anatomical detail about coronary artery health and can reveal both calcified plaque and soft (non-calcific) plaque that may not be apparent from calcium scores alone. A low calcium score doesn't guarantee low risk—some patients have significant soft plaque without much calcium, which can be equally or more dangerous. The C-plus algorithm combines multiple factors (calcium score, plaque burden, plaque characteristics, remodeling, and stenosis) to provide a comprehensive risk assessment that goes beyond calcium score alone. Trevor had a calcium score in the 20th percentile (seemingly low-risk) but actually had very high-risk features including substantial soft plaque and stenosis, with greater than 50% risk of heart attack in the next decade. Patient misunderstanding of test results, combined with casual reassurance from a GP unfamiliar with complex imaging interpretation, led Trevor to stop taking prescribed high-intensity cholesterol medication. Specialists and GPs must communicate directly with patients about medication changes rather than relying on patients to self-interpret test results or make independent decisions. When medication causes side effects, patients should work with their specialist to find the maximum tolerable dose rather than stopping treatment entirely without medical guidance. Patients should always return to their prescribing specialist before making changes to recommended treatment plans, even if seeking a second opinion from their GP. Effective cardiac risk management requires collaborative communication between patient, GP, and specialist to ensure proper understanding and adherence to potentially life-saving therapies.