Classic ECG triad points to an unexpected cause of dyspnoea
There's more than meets the eye for this patient with laboured breathing
![](https://www.ausdoc.com.au/wp-content/uploads/2022/08/overweight-woman-cough-iStock-1084239456-1.jpg)
Freda is a 55-year-old retail worker who has been seeing her GP for many years for management of COPD.
She presents on this occasion with increasing dyspnoea on exertion and a worsening cough over the past two months.