Q. I have a leaky heart valve that may need surgery down the road. Can you tell me about heart-valve surgery in one of your columns? A. First, let’s explain briefly how the heart works.

New Delhi: Global medical device maker Abbott has introduced the Navitor Vision in India, a state-of-the-art valve technology for treating symptomatic severe aortic stenosis in patients who face ...

I could feel this gurgle in my chest, from my lungs. You know when a kettle boils, that bubbling sound? That’s kind of what it was like.” ...