Karman cannula를 사용한 조기 임신중절에 관한 임상적 연구
A Clinical Study on the Use of Karman Cannula in the Termination of Early Pregnancy

Cited 0 time in webofscience Cited 0 time in scopus
Issue Date
서울대학교 의과대학
Seoul J Med 1977;18(4):227-233
Karman cannula. a flexible polyethylene catheter
for vacuum aspiration of early pregnancies, was first
described in 1970 by Harry Karman. The advantages
of this cannula were said to be that of easy and
painless introduction into the pregnant uterus without
dilatation or anesthesia. and prevention of uterine
perforation due to its flexibility.
The present study is undertaken to evaluate the
safety and effectiveness of Karman cannula for the
purpose of induced abortion up to 12 weeks of gestation
and to analyze the sociodemographic characteristics
and fertility profile of the patients. A total of
2140 cases were terminated at the Family Health
Clinic of Seoul National University, School of Medicine,
from February I. 1974 to December 31, 1975.
The obtained results are as follows:
1. The median age was 32. 8 years and median
number of living children was 3. 1. Two third of the
patients were between 30 and 39 years of age and
had 2 to 3 living children.
2. Regarding their education level. 57% of them
had graduated high school or college.
3. More than half of the patients responded that
their ideal number of children was three.
4. Among the patients 6 weeks or less from LMP.
composing 47.7% of all patients, 15.3% were proved
non-pregnant macroscopically.
5. During the procedure. anesthesia was not needed
in the majority of cases and trilene inhalation was
needed in 5.3% of the total.
6. Exploring curettage immediate after uterine aspiration
revealed that aspiration was complete in
more than 88% of the patients 7 weeks or less from
LMP, however, it was incomplete in 29.8% of 8weeks
group and 47.2% of 9-12 weeks group. Therefore, it
was suggested that the use of Karman cannula in the
termination of pregnancy up to 7 weeks was simple,
safe, effective and acceptable procedure.
7. Overall complication rate was 4.5%. This includes
0.4% of cervical injury caused by toothed tena
culum, 1.3% of vomiting, 0.3% of faintness, 1 case
of uterine perforation caused by post aspiration metal
curettage during the procedure. Besides 1.0% of mild
pelvic infection, 1. 1% of persistant bleeding, 0.3%
of retained product of conception, and 2 cases of
ectopic pregnancies were also included.
Files in This Item:
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)The Seoul Journal of MedicineThe Seoul Journal of Medicine Vol. 18 No.4 (1977)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.