The Annals of Thoracic Surgery, Vol 31, 66-69, Copyright © 1981 by The Society of Thoracic Surgeons
Immobilization of disc heart valves by unraveled sutures
PJ Starek
Disc immobilization by a prolapsed suture end was observed in a laboratory
animal with a pivoting disc heart valve. An identical occurrence was
experienced in a clinical situation by other investigators. These
experiences prompted a review of sutures and suturing techniques in
implanting disc heart valves, in an effort to ascertain the vulnerability
of all disc valves toward disc immobilization by sutures. An attempt was
made to immobilize the discs in five currently available heart disc valves
with prolapsed sutures under various handling conditions. Variables
included the model of disc valve, the location of the prolapsed suture, and
the type of suture material used. Our investigation showed that any of the
valves studied can be immobilized by prolapsed sutures. However, this
complication is avoidable if the implanting surgeon adheres to a few
precautionary suturing principles.