2018 Section 6 - Laryngology, Voice Disorders, and Bronchoesophalogy

S.-K.

Baek

et

al.

/ Auris Nasus

Larynx

44

(2017)

583 – 589

Fig.

1.

Flow

chart

of

the

study.

IONM =

intraoperative

neuromonitoring, RLN =

recurrent

laryngeal

nerve.

performed independent

using

analysis

of

variance

(ANOVA-Turkey ’ s

test),

Multi-Dimensional

Voice

Program

(MDVP)

3.2.

t-tests,

and

the Pearson

chi-square

test

or Fisher ’ s of < 0.05

patients

with

hemithyroidectomy,

all

of

the

results

of

In

test

between

groups. For

all

tests,

a

probability

exact

and

aerodynamic

analysis

showed

no

significant fundamental

acoustic

accepted

as

statistically

significant. All

statistical

analyses

was

between

group

A

and

B,

even

if

the

difference frequency

software version 21.0

for Windows

were performed using SPSS

(F0)

showed

a tendency of gradual decrease

in group

Chicago,

IL, USA).

(SPSS,

( Table

2 ). However,

in

total

thyroidectomy

patients,

the

F0 the

B

of

group

D

were

significantly

different

from

values

3.

Result

baseline

F0

values

in

comparison

with

group

C

preoperative

2 ,

0.01).

( Table

p <

Demographics

3.1.

previous

study

suggested

that

normal

range

of

The

frequency was between 165

to 255 Hz

[7] . Table 3

fundamental

significant

difference

was

identified

in

age,

operation between

No

the

patients ’

proportion with

normal

F0

in

each

group.

shows

surgical

approach

and

tumor

characteristics

time,

The

comparison

of

the

patients ’

proportion

with

normal

F0

IONM

group

and

no-IONM

group

in

the

patients

with

a

significant

difference

at

1 week,

1 month,

and

demonstrated

and

total

thyroidectomy

respectively

hemithyroidectomy

after

total

thyroidectomy

(group C

and D,

0.05).

3 months

1 ).

( Table

p <

Table 1 Demographics

of

the

patients.

thyroidectomy

Hemithyroidectomy

Total

No-IONM

p -Value

IONM

No-IONM (Group D)

p -Value

IONM

group

group

group

group

B)

(Group A)

(Group

(Group C)

N

37

41

31

76

Age

(mean)

45.9

44.9

0.71 0.65

50.7

51.5

0.77 0.24

side

Right

20 17

20 21

14 17

37 39

Tumor

Left

size

(cm)

0.87

0.84

1.05

0.86

0.19 0.71

Tumor Tumor

location

Upper

4

8

0.65

9

20 45 11 42 34 75

Mid

24

24

15

Lower

9

9

7

time

(min)

121.1

113.9

0.56 0.52

126.6

111.5

0.14 0.15

Op.

Approach

Open

19 18 30

18 23 31 10

18 13 31

Robotic/Endoscopic

Pathology

Malignancy

0.24

Benign Positive Negative

7 9

0

1

ETE

9

0.12

14 17

32 44

0.23

28

32

ETE = extra-thyroidal

extension.

Op = operation;

113