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Biomedical subjects

R Kinch

Publications and source records attributed to R Kinch.

7 recordsLinked to original sources
PubMed1984

Severity of labour pain: influence of physical as well as psychologic variables.

The role of physical factors in the severity of labour pain has been neglected. The amount of cervical dilation, the frequency of the contractions, the woman's height and usual weight before the pregnancy and other physical factors were therefore examined in relation to the intensity of labour pain in 141 primiparous and 99 multiparous women. In general, pain increased gradually during labour in both groups of women, though the severity of the pain was lower in the women who had received prepared childbirth training than in those who had not. Although the average pain scores in this study were high, there were striking individual differences, some women having extremely severe pain and others having almost none. The pain scores in both groups of women were significantly correlated with the ratios of the women's usual weight to height. In the multiparous women the scores were also correlated with the woman's usual weight and the baby's weight but not with the woman's weight gain during pregnancy. Thus, the results show that physical as well as psychologic factors contribute to the severity of labour pain.

Adolescent↗
PubMed1980

Focal nodular hyperplasia of the liver. An electron microscopic study of the vascular lesions.

Localized myointimal proliferation with narrowing of blood vessels is frequently seen associated with focal nodular hyperplasia of the liver. The apparent increase in the incidence of focal nodular hyperplasia in women may be associated with the oral use of contraceptive medications, and it has been suggested that the nodules could be areas of focal cirrhosis following liver infarction. A light and electron microscopic study was undertaken to try to determine the pathogenesis of the vascular abnormalities. The observation of intravascular coagulation, recurrent endothelial damage, and myointimal proliferation about bifurcations suggests that the changes could be produced by repeated platelet-fibrin aggregate embolic injury.

Arteries↗
PubMed1978

Focal nodular hyperplasia of the liver and oral contraceptives.

The increased incidence of liver tumors in women of childbearing age who have been using oral contraceptives for many years suggests an environmental causation. The causative agent may be the steroidal oral contraceptives. Two lesions are recognized: focal nodular hyperplasia and hepatic adenoma. This paper concentrates on focal nodular hyperplasia, with two cases added to the four previously described cases. It is postulated that the estrogen component causes vascular lesions characterized by myointimal hyperplasia and thrombosis, leading to infarct, necrosis, and subsequent nodular hepatic regeneration. The clinical feature highlighted is the long history of gastrointestinal disturbance associated with negative gastrointestinal investigation with the possible exception of cholelithiasis. It is suggested that gray-scale ultrasonography is an effective screening method that also aids in a definitive diagnosis. As these tumors are often incidental findings it is emphasized that the liver should always be inspected at laparoscopy. Ultimately, diagnosis by biopsy or excision is essential as it may well be possible to treat cases of focal nodular hyperplasia of the liver conservatively, once oral contraceptives have been discontinued.

Adult↗
PubMedDate not supplied

Repeat abortion: is it a problem?

As the number of Canadian women who have had induced abortions increases with each succeeding year, the number at risk--and the actual incidence--of repeat abortion also increases. Some researchers have argued that women who have more than one induced abortion are less well adjusted, others that they are less willing to use contraceptives, perhaps because of anxiety about sexuality. Still others have suggested that repeat abortion is unrelated to the psychology or attitudes of individual women, but rather is an inevitable result of imperfect contraceptives, imperfect contraceptive practice and the availability of legal abortion for the termination of unwanted pregnancies. A group of 580 women seeking abortions were interviewed at the Montreal General Hospital and given a number of psychological tests. About one in five of these women were having repeat abortions. The women having repeat abortions were older, less likely to be married and more tolerant of legal abortion than were women having their first abortions. They also had intercourse more frequently than the first-abortion patients. Women obtaining a repeat abortion were slightly more likely to have been using contraceptives at the time they became pregnant, but they did not differ from first-abortion patients in the types of methods that they used. On no other social or demographic characteristics, measures of psychological adjustment or attitudes about sexuality were there any important differences between the groups. A more complex statistical analysis reveals that the two most important factors differentiating first-abortion and repeat-abortion patients are age and coital frequency--both of which are variables that reflect added exposure to the risk of unintended pregnancy.(ABSTRACT TRUNCATED AT 250 WORDS)

Abortion, Induced↗