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.
Heart rate (HR) is the number of times the heart beats in one minute; normal rates are 60 to 100 beats per minute. Stroke volume (SV) is the amount of blood that the heart pumps out with each beat; the normal amount is 60 to 100 milliliters per beat. A stethoscope is a device that amplifies sounds.hen measuring someone's apical pulse, make sure the patient is rested before trying to count the apical pulse rate. Have the patient lie down and find the apex of the heart. Ask the patient to breathe through his or her nose with normal breaths.