MEASUREMENT OF INTERVILLOUS AND MYOMETRIAL BLOOD FLOW BY AN INTRAVENOUS <sup>133</sup>Xe METHOD

Rekonen, A; Luotola, H.; Pltkänen, M.; Kuikka, Jyrki T.; Pyörälä, Tapani

doi:10.1111/j.1471-0528.1976.tb00921.x

Cited by 64 publications

(31 citation statements)

References 9 publications

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“…These patients remained in the tilted left laterally position from PCB until the second measurement. The placental blood flow in ml/min/100 ml of the intervillous space was measured by 133 Xe-washout method described in detail elsewhere [15].…”

Section: Uterine Activitymentioning

confidence: 99%

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Puolakka¹,

Jouppila²,

Jouppila³

et al. 1984

Journal of Perinatal Medicine

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Section: Uterine Activitymentioning

confidence: 99%

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Puolakka¹,

Jouppila²,

Jouppila³

et al. 1984

Journal of Perinatal Medicine

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“…In recent years the vasculature of the human uterus has been well studied, moving from the static picture of injection techniques (Lundgren, 1957) to more recent rheometric methods using radioactive isotopes (Rekonen et al, 1976). Boving (1962) demonstrated that the apposition of an endometrial end-artery to the trophoblast knob is critical in the formation of placental cotyledons.…”

Section: Discussionmentioning

confidence: 99%

Anencephaly and spina bifida (ASB) and retroversion.

Buckley¹

1979

Journal of Epidemiology & Community Health

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SUMMARY Despite the wealth of epidemiological material of the last decade, birth defects are still the chief cause of perinatal mortality and no significant breakthrough in understanding or reduction has yet been seen. Many proposed aetiological factors are still being evaluated. This report suggests a possible, simple, remediable factor in the aetiology of defects of the central nervous system.The chance remark of a patient some years ago prompted a retrospective case-sheet study of the mothers of anencephalics in a Merseyside hospital. Of 47 case sheets examined, only 23 gave specific information of uterine position in the non-pregnant state. Of these, 14 (61%) were retroverted and nine (39%) were anteverted. One case of anecdotal interest recorded the uterus as anteverted on two occasions and during this time the patient had had two normal babies. There were then five records of the uterus being retroverted, in the midst of which the patient had an anencephalic baby.It was recognised that a small retrospective case-sheet study was of limited value because of the inadequacy and lack of guarantee of reliability of the records. For this reason the following study was undertaken as part of a more comprehensive survey of defects of the central nervous system. Material, methods, and resultsDuring a three-year survey, 113 cases of ASB births occurred in the hospitals of Izmir, a large city in western Turkey. Of the 77 cases who lived near enough to be recalled, 37 returned for discussion and examination. Most of the rest were lost because of change of address. Patients returning were questioned to complete information for the general survey, and examined and counselled with regard to further pregnancies. When possible, an independent vaginal examination was made by a colleague to assess uterine position. Of the 37 patients, 12 were already pregnant on recall. Of the remainder, 12 had an anteverted or mid-position uterus, 11 had a retroverted uterus, and two had acutely flexed and leave-rotated uteri. Including these two in the malposition group, there were 48% normal and 52% abnormally positioned uteri.A control group was made of 100 patients attending the routine gynaecological outpatient clinic. It is recognised that such a group may tend to give a slightly higher rate of retroversion than that in the normal population. Post-menopausal and pregnant patients and women with palpable tumours were excluded. Otherwise the group represented a typical gynaecological clinic cross-section. The obtained retroversion rate of 18% approximates to the generally accepted normal incidence of about 15% (Jeffcoate, 1967). DiscussionNon-fixed retroversion is properly regarded in most gynaecological circles as a normal variant. However, the above study raises the question of whether there might be some theoretical consideration which would give support to the apparent relation between retroversion and ASB. The early work of Stockard (1921) with fish and later mammalian work (Murakami and Katsunuma, 1955;Degenhardt, 1956; Ingalls and ...

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“…Accordingly, ex amination techniques suited for evaluating these parameters are of vital clinical interest. In clinical routine uteroplacental blood flow can only be measured by using radionuclide methods with intravenous tracer application [8,9], But these have limited diagnostic po tential, because they furnish no more than qualitative data on uteroplacental blood flow and cannot be repeated within a short inter val. Earlier studies have, however, shown the results obtained with the technique of blood flow measurement practiced by us to be of outstanding clinical relevance [8].…”

Section: Discussionmentioning

confidence: 99%

Uteroplacental Blood Flow Measurement Using Radioisotopes in Small Placentas

Philipp¹,

Skodler²,

Pateisky³

1986

Gynecol Obstet Invest

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In 25 pregnant females with a placental weight below the 20th percentile uteroplacental blood flow measurements using ^113mIn-transferrin were performed in the 3rd trimester of pregnancy. Twelve patients with pregnancy-induced hypertension (PIH) were compared to 13 females with normal blood pressures. The results of uteroplacental blood flow measurements showed normal flow patterns in only 6 of the 25 subjects and were significantly worse in the group with PIH. Babies of patients with PIH had a mean birth weight of 1,100 g at a mean gestational age of 34.2 weeks versus 1,752 g and 37.4 weeks for newborns without PIH. Perinatal mortality was significantly higher in the PIH group. In combination with a small placenta PIH compounds the fetal risk.

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MEASUREMENT OF INTERVILLOUS AND MYOMETRIAL BLOOD FLOW BY AN INTRAVENOUS ¹³³Xe METHOD

Cited by 64 publications

References 9 publications

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Anencephaly and spina bifida (ASB) and retroversion.

Uteroplacental Blood Flow Measurement Using Radioisotopes in Small Placentas

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MEASUREMENT OF INTERVILLOUS AND MYOMETRIAL BLOOD FLOW BY AN INTRAVENOUS 133Xe METHOD

Cited by 64 publications

References 9 publications

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Maternal and fetal effects of low-dosage bupivacaine paracervical block

Anencephaly and spina bifida (ASB) and retroversion.

Uteroplacental Blood Flow Measurement Using Radioisotopes in Small Placentas

Contact Info

Product

Resources

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MEASUREMENT OF INTERVILLOUS AND MYOMETRIAL BLOOD FLOW BY AN INTRAVENOUS ¹³³Xe METHOD