81 / 264
of patients (Fig. 13). Mean PTA worsened by 6.0 dB
(range, 0.0
Y
13.3 dB).
Mastoid Shunt With Silastic Versus Mastoid
Shunt without Silastic
Mastoid With Silastic. Vertigo:
Nine articles, totaling
631 patients, were analyzed to determine the efficacy of
mastoid shunting with silastic in controlling vertigo.
Mean follow-up was 40.7 months (range, 24
Y
60 mo).
Complete or substantial (Category A/B) vertigo con-
trol was achieved in 75.3% (95% CI, 71.8%
Y
78.6%) of
patients (Fig. 14).
Hearing:
Seven articles, totaling 324 patients, were an-
alyzed to determine the efficacy of mastoid shunting with
silastic in hearing preservation. Mean follow-up was
38.8 months (range, 24
Y
132 mo). Postoperative hearing
was stable or improved in 64.4% (95% CI, 59.0%
Y
69.5%)
of patients (Fig. 15). Mean PTA worsened by 6.2 dB
(range, 4.0
Y
13.3 dB).
Mastoid Without Silastic. Vertigo:
Four articles, total-
ing 335 patients, were analyzed to determine the efficacy
of mastoid shunting without silastic in controlling ver-
tigo. Mean follow-up was 40.8 months (range, 24
Y
72 mo).
Complete or substantial (Category A/B) vertigo control was
achieved in 79.0% (95% CI, 63.8%
Y
90.9%) of patients
(Fig. 16).
Hearing:
Two articles, totaling 240 patients, were ana-
lyzed to determine the efficacy of mastoid shunting with-
out silastic in hearing preservation. Mean follow-up was
49.8 months (range, 24
Y
72 mo). Postoperative hearing was
unchanged or improved in 79.8% (95% CI, 68.1%
Y
89.3%)
of patients (Fig. 17). We were unable to calculate mean dB
PTA change.
FIG. 14.
Vertigo control: Forest plot for mastoid shunt
with
si-
lastic with Category A/B vertigo control at a minimum of 24 months
of follow-up.
FIG. 15.
Hearing outcomes: Forest plot for mastoid shunt
with
silastic with hearing improved or stable at a minimum of 24 months
of follow-up.
FIG. 16.
Vertigo control: Forest plot for mastoid shunt
without
si-
lastic with Category A/B vertigo control at a minimum of 24 months
of follow-up.
FIG. 17.
Hearing outcomes: Forest plot for mastoid shunt
without
silastic with hearing improved or stable at a minimum of 24 months
of follow-up.
ENDOLYMPHATIC SAC SURGERY FOR ME´ NIE` RE
_
S DISEASE
Otology & Neurotology, Vol. 35, No. 6, 2014
60