In vitro effect of ventriculocordectomy before laryngoplasty on abduction of the equine arytenoid cartilage.
Vet Surg
; 40(3): 305-10, 2011 Apr.
Article
em En
| MEDLINE
| ID: mdl-21314703
ABSTRACT
OBJECTIVE:
To determine whether ventriculocordectomy (VCE) performed before prosthetic laryngoplasty (PL) results in increased rima glottidis size compared with PL alone. STUDYDESIGN:
Experimental study. ANIMALS Equine cadaver larynges (n=13).METHODS:
Right arytenoid cartilages were maximally abducted using a standard PL technique. Standard PLs were then performed on the left side and the force required to maximally abduct the left arytenoid cartilage recorded (F(max) ). Photographs were taken of the rima glottidis at zero force and at five equal levels of force up to F(max) . The force applied was released, left VCE performed, and photographs repeated. Arytenoid leftright angle quotients (LRQ) and glottic cross-sectional area ratios (CSAR) were calculated at each force level in each condition (PL and VCE-PL).RESULTS:
Mean LRQ and CSAR for both PL and VCE-PL increased with increasing force, initially rapidly before plateauing at ~50% of F(max) . LRQ and CSAR were significantly greater for VCE-PL than for PL (P<.001). When VCE was performed before PL, 12% less force was required to achieve an LRQ of 0.8, and 45% less for a CSAR of 0.8.CONCLUSIONS:
In vitro, VCE performed before PL enables the arytenoid cartilage to be abducted to a greater degree for a given PL suture force.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cartilagem Aritenoide
/
Laringoplastia
/
Cavalos
Limite:
Animals
Idioma:
En
Revista:
Vet Surg
Ano de publicação:
2011
Tipo de documento:
Article