For some people, the classic symptoms of a sinus infection, including nasal congestion and discharge, are also accompanied by ...

Scientists call this feature a “neural fossil”. It’s a remnant of a system that once helped our ancestors pinpoint the ...

which moves the posterior leaflet forward, and suddenly the valve coapts again, so it can close normally. That's great as long as the coronary sinus is right behind the annulus. Another issue is ...