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Biomedical subjects

K A Harrison

Publications and source records attributed to K A Harrison.

5 recordsLinked to original sources

Response patterns of children with learning disabilities: is impulsivity a stable response style?

A correlational analysis was conducted to assess the relationship among various assessment instruments, including Kagan, Rosman, Day, Albert, and Phillips's (1964) Matching Familiar Figures Test (MFFT), and actual classroom performance vis-à-vis impulsive responding. Subjects were 22 children (16 male, 6 female), ages 5 to 11 years, enrolled in an academic remediation program. The results do not support a relationship between impulsivity, as measured by the MFFT, and academic progress in a classroom setting. Implications for task-specific measures of impulsivity and remediation are discussed.

Achievement

Nigeria.

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Adolescent

Endometriosis among the Hausa/Fulani population of Nigeria.

In three and half years at the Ahmadu Bello University Hospital, Zaria, Nigeria, endometriosis was found in 27 Nigerians (all negroid) and one Caucasian. Age and parity distribution were similar to what has been found in patients elsewhere. In other respects, there were striking differences. The frequency (8.2 percent) is one of the highest reported in the negro. Two fifths were menopausal, majority had associated pelvic inflammatory disease, and nearly all were in women of the lowest socio-economic status. The lesions were rare in the pouch of Douglas and were totally absent from the rectovaginal septum and in the extra peritoneal space.

Adult

Sickle cell disease in pregnancy.

S-Homozygotes, SC heterozygotes, and S-beta-thalassaemia heterozygotes are the haemoglobinopathies which make up sickle cell disease. Although their clinical features are similar, as regards complications during pregnancy, Hb S-beta-thalassaemia most dangerous, the main causes of mortality being severe anemia, acute sequestration crisis, bacterial infections, painful episodes, and pulmonary bone marrow fat embolism. Folic acid and antimalarials (where these are indicated) are often successful in preventing severe anaemia. It is best to reserve blood transfusion to replace moderate loss or to correct gross anaemia quickly when this is considered severe enough to threaten life. Painful crises are particularly common towards the end of pregnancy and in treating these episodes, analgesics, antibiotics, and sometimes heparin are used. S-homozygote carries additional hazards. Because of the prevalence of pelvic contraction, fetopelvic disproportion is common and so the incidence of operative deliveries is high. Many fetuses are lost through an increased incidence of abortion and perinatal mortality. In the survivors, there is evidence of intrauterine growth retardation brought about by continuous maternal anaemia throughout pregnancy.

Anemia, Sickle Cell