TY - JOUR
T1 - Measurements of drill-induced temperature change in the facial nerve during mastoid surgery
T2 - A cadaveric model using diamond burs
AU - Abbas, Gregory M.
AU - Jones, Raleigh O.
PY - 2001
Y1 - 2001
N2 - The purpose of this study was to investigate the changes in temperature in the facial nerve that occur during mastoid drilling by the facial recess approach and to confirm the beneficial effects of constant irrigation while drilling. Mastoid drilling was performed on human cadaveric temporal bones by means of 4-mm diamond burs with and without irrigation. There were 6 subjects in each group. Changes in facial nerve temperature were recorded on a continuous-output monitor. Significant changes were found in temperature for both the irrigation and non-irrigation groups (p <.0001). Constant irrigation minimized the rise in temperature. Facial recess drilling poses a potential threat to cranial nerve VII via thermal injury. The temperature elevation in the non-irrigation group was significantly greater than that in the irrigation group and was greater than the tolerable limits of peripheral nervous tissue. This finding supports the need for constant irrigation during the approach to the facial recess in mastoid surgery.
AB - The purpose of this study was to investigate the changes in temperature in the facial nerve that occur during mastoid drilling by the facial recess approach and to confirm the beneficial effects of constant irrigation while drilling. Mastoid drilling was performed on human cadaveric temporal bones by means of 4-mm diamond burs with and without irrigation. There were 6 subjects in each group. Changes in facial nerve temperature were recorded on a continuous-output monitor. Significant changes were found in temperature for both the irrigation and non-irrigation groups (p <.0001). Constant irrigation minimized the rise in temperature. Facial recess drilling poses a potential threat to cranial nerve VII via thermal injury. The temperature elevation in the non-irrigation group was significantly greater than that in the irrigation group and was greater than the tolerable limits of peripheral nervous tissue. This finding supports the need for constant irrigation during the approach to the facial recess in mastoid surgery.
KW - Facial nerve injury
KW - Mastoid drilling
KW - Thermal injury
UR - http://www.scopus.com/inward/record.url?scp=0034856215&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034856215&partnerID=8YFLogxK
U2 - 10.1177/000348940111000911
DO - 10.1177/000348940111000911
M3 - Article
C2 - 11558764
AN - SCOPUS:0034856215
SN - 0003-4894
VL - 110
SP - 867
EP - 870
JO - Annals of Otology, Rhinology and Laryngology
JF - Annals of Otology, Rhinology and Laryngology
IS - 9
ER -