Oau teaching hospital says successfully performed 14 heart surgery in 2016

That's a great achievement! Here's a rewritten version with a more formal tone:

"Obafemi Awolowo University Teaching Hospitals (OAUTH) has announced that it successfully performed 14 heart surgeries in 2016. This remarkable feat demonstrates the hospital's commitment to providing high-quality medical care and its expertise in cardiovascular surgery. The successful surgeries are a testament to the hospital's skilled medical team and its state-of-the-art facilities. This achievement is a significant milestone for the hospital and a reflection of its dedication to improving the health and well-being of its patients."