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Biomedical subjects

A B Amoa

Publications and source records attributed to A B Amoa.

5 recordsLinked to original sources

Endocervical Chlamydia trachomatis infection in pregnancy: direct test and clinico-sociodemographic survey of pregnant patients at the Port Moresby General Hospital antenatal clinic to determine prevalence and risk markers.

The prevalence of endocervical C. trachomatis infection in 181 consecutive antenatal clinic patients at the first attendance and who had not received antibiotic therapy in the previous 4 weeks, was 17.7%. The direct fluorescent antibody test was used for diagnosis. There was no significant clinical or sociodemographic factor which distinguished patients who tested positive from those who tested negative.

Adult

Antepartum haemorrhage at the Port Moresby General Hospital: a retrospective study of 130 consecutive cases.

In a retrospective study of 130 out of 141 consecutive cases of antepartum haemorrhage admitted to the Obstetrics Unit of the Port Moresby General Hospital in the three years 1987 to 1989, 33% had abruptio placentae, 48% had placenta praevia and in 19% the cause of the APH could not be determined. Delivery was by caesarean section in 56% of cases compared to a caesarean section rate of 3% for the total obstetric population. Stillbirth rates per 1000 total births were 223 for all the 130 cases, 81 for the praevia group, 488 for the abruptio group and 120 for the indeterminate group. The stillbirth rate for all deliveries in the hospital in the year 1989 was 21.5/1000.

Abruptio Placentae

Breech presentation and delivery.

What constitutes proper management for the singleton baby who presents by the breech at term has remained one of the most contentious subjects in obstetric practice. Perinatal morbidity and mortality are much higher in breech than in cephalic presentation. Elective caesarean section has been increasingly used in an attempt to improve the perinatal outcome. But caesarean section has immediate and late maternal complications. Some of these complications can be catastrophic. External cephalic version (ECV) at term, under tocolysis if necessary, will reduce the incidence of vaginal breech delivery and the incidence of caesarean section. Where ECV fails, the use of a selective management protocol will allow trial of breech labour in suitable cases, thus further reducing the incidence of elective section. Symphysiotomy may save the life of the baby whose head is trapped by disproportion.

Breech Presentation

Epidemiology of rheumatic heart disease among primary school children in western Kenya.

A community survey was conducted to determine the prevalence of rheumatic heart disease in Kenyan children in all primary schools in 2 sublocations in Western Kenya. In total, 3631 children (97% school attendance) aged from 5 to 15 years were examined by one experienced physician and 2 cardiologists between September and December 1985. Six children were found to have evidence of rheumatic heart disease, giving a prevalence rate of 1.7/1000. As all cases occurred in the age group between 10 and 15 years, the rate was calculated for this group as 2.4/1000. None of these patients had previously been diagnosed as having rheumatic fever. There were 3 males and 3 females. Four patients had mitral regurgitation, one had aortic regurgitation and one had mitral stenosis. Three had electrocardiographic evidence of left atrial abnormality and one showed findings of left ventricular hypertrophy but two patients had normal tracings. Half were symptomatic with dyspnoea on exertion and two gave a history of fleeting polyarthritis. The socio-economic status (peasant), family size (mean = 6 siblings) and the number of children sleeping per room were the same in both the cases with rheumatic heart disease and their controls. The health workers achieved low scores (mean 26%) with regard to the clinical diagnosis, treatment and prevention of rheumatic fever at the level of primary health care. Rheumatic heart disease, nonetheless, was relatively insignificant in the overall picture of health care of school children in Western Kenya.

Adolescent

Ergometrine or oxytocin? Blood loss and side-effects at spontaneous vertex delivery.

Blood loss and the frequency of vomiting were assessed at 88 spontaneous vertex deliveries. An i.v. injection of oxytocin 10 u was as effective as ergometrine 0.5 mg in controlling bleeding from the uterus after delivery. The continuous infusion of a dilute solution of oxytocin in the first stage of labour was not followed by an increased blood loss at delivery. Oxytocin infusions were maintained for 1 h after delivery. Vomiting or retching occurred in 13% of the mothers who received i.v. ergometrine. None of the women who received oxytocin suffered emetic sequelae.

Clinical Trials as Topic