Autologous Platelet-Poor Plasma Gel for Injection Laryngoplasty.
10.3349/ymj.2013.54.6.1516
- Author:
Seung Hoon WOO
1
;
Jin Pyeong KIM
;
Jung Je PARK
;
Phil Sang CHUNG
;
Sang Hyuk LEE
;
Han Sin JEONG
Author Information
1. Department of Otolaryngology, Gyeongsang National University, Jinju, Korea.
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Plasma gel;
injection;
vocal cord palsy;
laryngoplasty;
acoustical analysis
- MeSH:
Adult;
Aged;
Aged, 80 and over;
Animals;
*Blood Platelets;
Female;
Humans;
Laryngoplasty/*methods;
Male;
Middle Aged;
Plasma/*physiology;
Rats
- From:Yonsei Medical Journal
2013;54(6):1516-1523
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To overcome the potential disadvantages of the use of foreign materials and autologous fat or collagen, we introduce here an autologous plasma gel for injection laryngoplasty. The purpose of this study was to present a new injection material, a plasma gel, and to discuss its clinical effectiveness. MATERIALS AND METHODS: From 2 mL of blood, the platelet poor serum layer was collected and heated at 100degrees C for 12 min to form a plasma gel. The plasma gel was then injected into a targeted site; the safety and efficacy thereof were evaluated in 30 rats. We also conducted a phase I/II clinical study of plasma gel injection laryngoplasty in 11 unilateral vocal fold paralysis patients. RESULTS: The plasma gel was semi-solid and an easily injectable material. Of note, plasma gel maintains the same consistency for up to 1 year in a sealed bottle. However, exposure to room air causes the plasma gel to disappear within 1 month. In our animal study, the autologous plasma gel remained in situ for 6 months in animals with minimal inflammation. Clinical study showed that vocal cord palsy was well compensated for with the plasma gel in all patients at two months after injection with no significant complications. Jitter, shimmer, maximum, maximum phonation time (MPT) and mean voice handicap index (VHI) also improved significantly after plasma gel injection. However, because the injected plasma gel was gradually absorbed, 6 patients needed another injection, while the gel remained in place in 2 patients. CONCLUSION: Injection laryngoplasty with autologous plasma gel may be a useful and safe treatment option for temporary vocal cord palsy.
