a
)
Clinically
significant
cervical
shortening
b
)
Borderline
cervical
shortening
c
)
Normal
cervical
length
(
____________________
)
>25
mm
(
____________________
)
<20
mm
(
____________________
)
21
-
24
.
9
mm
(
____________________
)
Consult
for
counseling
and
intervention
(
____________________
)
No
further
screening
or
intervention
(
____________________
)
Repeat
CL
by
24
week
s
