On-X Patient Stories


Fred Hoiberg

Patient story: Fred
NBA Player for 10 Years
Head Coach: Chicago Bulls
Husband, Father of 4, Age 43
On-X Aortic Valve Recipient

“Since getting my On-X valve, I feel as good as I did when I was playing in the NBA.”

Fred Hoiberg played in the NBA for 10 years with the Indiana Pacers, Chicago Bulls, and Minnesota Timberwolves, until 2005 when irregular cardiac readings from a routine physical benched him… and then changed his life forever.
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Michael Marranca

Patient story: Michael
Senior PA-C at Mayo Clinic
Husband, Father of 2, Age 56
On-X Aortic & Mitral Valve Recipient

“It’s a humbling experience, and I think it made me a more passionate practitioner. It allows me to relate to the patient in a way I wasn’t able to before.”

Michael Marranca is a senior PA-C at Mayo Clinic where he specializes in CT surgery. He’s also a heart valve surgery patient, and recipient of two On-X mechanical heart valves.
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Mike Thomas

Patient story: Mike
Active Cyclist, Athlete, Age 54
U.S. Army Veteran (1982-2010)
Operation Iraqi Freedom, Operations Desert Shield and Desert Storm
On-X Aortic Valve Recipient

“My doctors recommended a mechanical valve because I’m a younger patient, even at 54! They told me a tissue valve would wear out and require additional surgical procedures.”

In December 2014, doctors told Mike, an active cyclist who has been serving in the U.S. military for nearly three decades, that his heart valve was not functioning correctly. He had severe regurgitation; significant amounts of blood were flowing backward into his heart, forcing his heart to work overtime. Over the years, Mike’s worsening aortic regurgitation caused his heart muscle to compensate for the “leaky” valve and become enlarged, beginning the path for heart failure.
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Patient story: Marilyn
Independent Business Owner
Wife, Grandmother, Age 59
On-X Aortic Valve Recipient

“I have a valve that will last my lifetime.”

Marilyn was first diagnosed with a heart murmur at age 47, caused by a bicuspid valve in her heart (her aortic valve had only two working leaflets instead of three). She also had a family history of heart valve problems; her father had a bicuspid aortic valve and aortic valve surgery.
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Patient story: Ron
Grandfather to 12
Golfer, Age 63
On-X Aortic Valve Recipient

“I did my research and On-X seemed to be the best valve for me, so I requested my surgeon use the On-X valve.”

Ron was diagnosed with aortic stenosis at the beginning of 8th grade. Aortic stenosis is when the aortic valve doesn’t open fully. In high school, he excelled at many sports and was named All-StaRte in baseball. Coincidentally, one of Ron’s school mates was Clyde Baker, a very good high school varsity basketball player who later became the CEO of On-X Life Technologies. It was four decades later when they met again, this time pulling for Ron’s life.
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Patient story: Whitney
Active Mom of 2
Accountant, Age 33
On-X Aortic Valve Recipient

“I had to keep myself calm because I knew, with every heartbeat, that my insides were tearing open. I knew I was in God’s hands… I’m grateful that my surgeon, Dr. Mark Pool, selected the On-X valve for my emergency heart valve replacement surgery”

Just hours after Whitney delivered her second child, a premature daughter named Willow, she felt a sharp, unfamiliar pain in her chest. A CT scan confirmed that she had ruptured her aorta – the largest artery in the human body. The young mother suddenly found herself fighting for her life as she was airlifted from the local community hospital where she had given birth, to Texas Health Presbyterian Hospital in Dallas.
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Patient story: Neil
Age 18
On-X Aortic Valve Recipient

“Three different doctors suggested the On-X valve for Neil, because of its advanced design and materials – it will not wear out like tissue valves.”

Neil’s pediatrician first detected a heart murmur when the boy was two weeks old, and an echocardiogram test confirmed that he had a bicuspid aortic heart valve, a congenital condition in which the valve contains only two working leaflets rather than the usual three.
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The On-X Heart Valve Patient Guide

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Mark Spindler