A 70-year-old female, who was a retired teacher, suffered from recurrent urinary tract infection (UTI). Her urologists had advised alternating between trimethoprim and nitrofurantoin in the long term as a prophylactic measure. Sixteen months later, she developed shortness of breath while performing daily tasks after commencing nitrofurantoin. She often felt tired. While observing no improvement in her symptoms, she decided to visit her general practitioner. He documented a detailed history, noting that there was no orthopnea, ankle swelling or palpitations.
He also noted the absence of a cough, wheeze or fever. Her recent echocardiogram was reported normal. He conducted a thorough examination including BP, pulse and oxygen saturation. On examination, Heart sounds were normal. Respiratory examination showed a bilateral air entry with no crackles, wheeze, or dullness on percussion. No…
