Uterine Geometry and IUD Performance

Hasson, Harrith M.

doi:10.1007/978-94-009-8872-9_2

Cited by 7 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most IUCD complications appear to result from mechanical factors (Hasson 1980). The mechanical factors include residence of the device in the uterine isthmus or cervix, endometrialmyometrial injury and myornetrial distension.…”

Section: Relation Between Uterine Geometry and Iucd Design mentioning

confidence: 99%

Uterine geometry and IUCD design

Hasson¹

1982

BJOG

View full text Add to dashboard Cite

Summary. The endometrial cavity is an isosceles trapezoid that changes in shape with the phase of the cycle. The distance from the fundus to where the cavity narrows to 12 mm is the effective length. This and the total length of the uterine cavity can be measured with the Wing Sound. IUCD complications are more frequent if the length of a device exceeds the effective length or the width of the uterine cavity. Devices must be designed to fit the uterine cavity and to conform to physiological changes in the shape of the organ.

show abstract

Section: Relation Between Uterine Geometry and Iucd Design mentioning

confidence: 99%

Uterine geometry and IUCD design

Hasson¹

1982

BJOG

View full text Add to dashboard Cite

show abstract

“…Whether or not the IUD acts as the sole initiator of these contractile events or is assisted by the effects of prostaglandin release is not known. In contrast, disproportionately small IUDs may not cover enough uterine area to prevent pregnancy, or they may gravitate downwards into the uterine isthmus and/or the cervix where they may also initiate subsequent abnormal events [4,5]. Wheeler and colleagues [7] have shown that increased pain, bleeding and removal rates were directly proportional to device size.…”

Section: Discussionmentioning

confidence: 96%

“…One of the most important factors affecting IUD performance is the dynamic interaction between the geometric parameters of the host uterus and those of the resident device [4]. Hasson and colleagues observed that high rates of abnormal events occurred when the length of the IUD equalled or exceeded the length of the endometrical cavity or when it was shorter by two or more cm [5].…”

Section: Introductionmentioning

confidence: 98%

Uterine geometry and IUD-induced pain

Toppozada¹,

Ismail

Bakry

1986

Adv Contracept

View full text Add to dashboard Cite

Sixty women using IUDs were included in two equal groups in the present study. Group I consisted of women presenting with pelvic pain for which they requested removal of the IUD, while the comparison group (group II) requested removal of the IUD for non-medical reasons. After extraction of the IUD, the Wing Sound II device was used to measure uterine cavity length and fundal transverse diameter. The uterine cavity measurements in both groups were not significantly different. When the ratios of IUD dimensions to uterine cavity measurements were compared, it was also found that there were no significant differences between groups. Factors other than discrepancies in size probably contribute to the pathogenesis of IUD-induced pain.

show abstract

“…However, there are many other risk factors for developing PID including: a history of prior PID or abortion, multiple sexual partners, age less than 25 years, and nulliparity [2]. Improper insertion or fitting of the IUD may also contribute to the risk of PID [10]. Generally, previous studies have not evaluated the relative importance of these factors in terms of the risks of PID to IUD users.…”

Section: Discussionmentioning

confidence: 99%

Clinical experience with intrauterine devices in a private practice

1985

Adv Contracept

Self Cite

View full text Add to dashboard Cite

Clinical experience with intrauterine devices was evaluated, based on 627 insertions over a 14-year period in a private practice. Overall, there were few differences in the event rates leading to IUD discontinuation for the IUDs evaluated, principally Cu-7, Dalkon Shield and Lippes Loop. Pelvic infections were infrequent (0.7-2.2 cases per 100 woman-years of IUD use). The rate of PID in the study population appeared to be similar to that noted in the general population. IUD use did not appear to compromise future fertility, based on evaluations of patients after removal of their IUDs or from their return to fertility following IUD removal. IUD event rates (pregnancy, expulsion, displacement, removal for bleeding and/or pain) were related to the difference between endometrial cavity length and IUD length. A significant increase in the event rates was noted, regardless of the IUD type, when the endometrial cavity length exceeded IUD length by 2.0 cm or more, or when the difference between the endometrial cavity and IUD length was less than 0.5 cm.

show abstract

Uterine Geometry and IUD Performance

Cited by 7 publications

References 31 publications

Uterine geometry and IUCD design

Uterine geometry and IUCD design

Uterine geometry and IUD-induced pain

Clinical experience with intrauterine devices in a private practice

Contact Info

Product

Resources

About