We evaluated the efficacy of automated lamellar therapeutic keratoplasty (ALTK SystemÂ®; Moria/Microtek Inc., Doylestown, Pennsylvania, USA) in the treatment of various corneal disorders affecting the anterior to mid-stroma.
Whatâs the problem? Pulmonary regurgitation (PR, also called pulmonic regurgitation) is a leaky pulmonary valve. This valve helps control the flow of blood passing from the heart to the lungs. A leaky pulmonary valve allows blood to flow back into the heart chamber before it gets to the lungs for oxygen.
A ventricular assist device (VAD) is a mechanical pump that's used to support heart function and blood flow in people who have weakened hearts.The device takes blood from a lower chamber of the heart and helps pump it to the body and vital organs, just as a healthy heart would. ventricular assist device (VAD) is a mechanical pump that's used to support heart function and blood flow in people who have weakened hearts.