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.
In many cases, patients in the intensive care unit will be monitored continuously using an EKG machine. A precordial lead is one of the leads placed on the chest for an electrocardiogram. During an electrocardiogram, electrodes are placed on the skin to monitor electrical impulses inside the heart. A heart attack results in evolving changes to different precordial leads.