A Technique for Monitoring Endometrial or Decidual Blood flow with an Intra‐Uterine Thermistor Probe

Åkerlund, Mats; Bengtsson, Lars Philip; Carter, Anthony Michael

doi:10.3109/00016347509157110

Cited by 35 publications

(14 citation statements)

References 9 publications

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“…In the current study only 5% of women smoked 10 or more cigarettes per day: Smoking was not associated with the probability of having pain, but among those with pain, smokers were more likely to have severe cramps, pain lasting longer than two days, multiple episodes of pain, and onset of pain before bleeding. The consistency of the literature on smoking suggests that use of tobacco is a risk factor for the occurrence of menstrual cramps and for prolonged pain episodes 8,25 .…”

Section: Discussionmentioning

confidence: 99%

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

Harlow

Park

1996

BJOG

257

173

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Objective To describe how menstrual cramps vary from cycle to cycle within a woman over time. To examine the influence of weight and lifestyle factors on occurrence, duration, and severity of menstrual pain. Design A one‐year prospective menstrual diary study. Participants One hundred and sixty‐five women aged 17 to 19 years entering a local university in 1985. Main outcome measures The occurrence, length, and maximum severity of pain during a menstrual period. Results Menstrual pain occurred during 71.6% of observed menstrual bleeds, most commonly beginning the first day of menses. The median duration was two days. Sixty percent of women reported at least one episode of severe pain, while 13% reported severe pain more than half the time. Earlier age at menarche and long menstrual periods increased the occurrence, duration and severity of pain. In smokers, cramps tended to last longer. Being overweight was an important risk factor for menstrual cramps and doubled the odds of having a long pain episode. Frequent alcohol consumption decreased the probability of having menstrual cramps, but in women who had pain it increased duration and severity. Physical activity was not associated with any pain parameter. Conclusions Women who have pain lasting three days are an important target group for prophylactic therapy. The occurrence and severity of menstrual cramps is influenced by potentially modifiable characteristics including weight, smoking, and alcohol consumption. Doctors may wish to counsel women presenting with dysmenorrhoea about the importance of healthy lifestyles and about the inefficacy of alcohol consumption as a treatment for dysmenorrhoea.

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Section: Discussionmentioning

confidence: 99%

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

Harlow

Park

1996

BJOG

257

173

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“…In principle, there are mainly five approaches to study the uteroplacental blood flow. (I) Variations of electrical or heat conductance in a tissue or a vessel can be measured with electromagnetic transducers (1,11,18) or thermistors (4,5,17,24). (II) Distribution of radioactive microspheres after arterial infusion.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Uteroplacental Blood Flow in Normal and in Intrauterine Growth-Retarded Pregnancy

Lunell

Sarby

Lewander

et al. 1979

Gynecol Obstet Invest

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Uteroplacental blood flow was studied with a noninvasive method using indium-113m and a computer-linked gammacamera. The blood flow was determined from the ratio of the maximum and the rise time of the isotope accumulation curve of the placenta. Eight pregnancies with intrauterine growth retardation (IUGR) were compared with 11 normal pregnancies. In the IUGR group the mean placental blood flow was only 1/4 of corresponding mean values of the mormal group. The difference was highly significant (p < 0.01).

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“…This variation in the blood pressure response raises the essential question of to what extent regional blood flow responses observed in rodents are likely to occur in man. As far as the uterus is concerned, preliminary observations demonstrate a pronounced decrease in the endometrial blood flow of non-pregnant women after intranasal administration of TGLVP (AKERLUND et al 1975). Maternal placental blood flow markedly decreased in six of the seven guinea-pigs given 10 pgkg TGLVP.…”

Section: Cortmentioning

confidence: 86%

Effect of a Vasopressin Analogue (N^α‐glycyl‐glycyl‐glycyl‐[8‐lysine]‐ vasopressin) on Organ Blood Flow in the Pregnant Guinea Pig

Sjöquist

Bjellin

Carter

1977

Acta Pharmacologica et Toxicologica

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Nα‐triglycyl‐(8‐lysine)‐vasopressin (TGLVP) was administered intravenously to pregnant guinea pigs and the effect on regional blood flow examined by the radioactive microsphere technique. A dose of 10 μg/kg TGLVP caused an elevation of the mean arterial blood pressure, from 6.4 to 11.1 kPa, a significant reduction in blood flow to the gut, skin and skeletal muscle and a significant increase in blood flow to the spleen. The number of 15 ± 5 μm microspheres reaching the lungs diminished significantly after 10 μg/kg TGLVP, indicating that this dose constricted arterio‐venous short circuits in the systemic circulation. There was also a decrease in blood flow to the urogenital tract, including the placentae. When 3 μg/kg TGLVP was injected, the mean arterial blood pressure rose from 6.5 to 8.7 kPa and there was no longer any consistent effect on maternal placental blood flow. It is suggested that pregnancy constitutes a contraindication for TGLVP, since a reduction in uterine and maternal placental blood flow might occur with clinically relevant doses.

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A Technique for Monitoring Endometrial or Decidual Blood flow with an Intra‐Uterine Thermistor Probe

Cited by 35 publications

References 9 publications

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

Comparison of Uteroplacental Blood Flow in Normal and in Intrauterine Growth-Retarded Pregnancy

Effect of a Vasopressin Analogue (N^α‐glycyl‐glycyl‐glycyl‐[8‐lysine]‐ vasopressin) on Organ Blood Flow in the Pregnant Guinea Pig

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A Technique for Monitoring Endometrial or Decidual Blood flow with an Intra‐Uterine Thermistor Probe

Cited by 35 publications

References 9 publications

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

A longitudinal study of risk factors for the occurrence, duration and severity of menstrual cramps in a cohort of college women

Comparison of Uteroplacental Blood Flow in Normal and in Intrauterine Growth-Retarded Pregnancy

Effect of a Vasopressin Analogue (Nα‐glycyl‐glycyl‐glycyl‐[8‐lysine]‐ vasopressin) on Organ Blood Flow in the Pregnant Guinea Pig

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Product

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Effect of a Vasopressin Analogue (N^α‐glycyl‐glycyl‐glycyl‐[8‐lysine]‐ vasopressin) on Organ Blood Flow in the Pregnant Guinea Pig