My dad had a prostate biopsy done, and suffered an infection 1 day after. He was given a heavy dose of antibiotics in the hospital, and had fluid in his lungs and the next day, had a massive heart attack. He had an emergency operation and a stent was inserted. He is still in the hospital recovering. he had a hear by-pass 20+ years ago and he is 74 years old.  Why has this happened? Was the prostate biopsy more harmful than helpful in his case? Will he recover at all from all these problems?
He is already a heart patient so doing any procedure would be risky. Any stressful condition can precipitate heart attack and he already is a heart patient had suffered it badly. Due to wakened function of heart he has fluid in his lungs. Probably he'll recover as he tolerated all the events.