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At least 217 records · Page 12Linked to original sources
PubMed1993

Traumatic rupture of an aortic ulcerative atherosclerotic plaque producing aortic dissection: a complication of interscapular back blows used to dislodge objects from the esophagus.

Penetrating atherosclerotic ulcer of the aorta is a rare entity which usually occurs in the descending thoracic aorta. Herein, we report an unusual case of penetrating aortic ulcer which ruptured into the mediastinum. Interscapular back blows were performed on our patient in an attempt to dislodge an aspirin which she thought was lodged in her esophagus. Unlike previously reported cases of this entity, the penetrating aortic ulcer in our patient was located in the distal thoracic ascending aorta. Diagnosis of penetrating aortic ulcer can be made by utilizing aortography, contiguous dynamic contrast-enhanced computed tomography or magnetic resonance imaging. Treatment consists of adjunctive medical therapy until surgery can be performed.

Aged↗
PubMed1982

The secondary importance of primary health care in South Cameroon.

Primary health care in Cameroon meets with serious obstacles. The state gives it a low priority in its budget and over-all policy. The health institutions are rarely active in this field. Institutions which do practice some primary health care are usually foreign. The villagers, finally, are little interested. They insist only on improvement of curative services and material life conditions. The conclusion is that primary health care is regarded as something of secondary importance. First comes a better life. The research for this paper was conducted in 1980 in the South of Cameroon.

Cameroon↗
PubMed1985

Overurbanization and underdevelopment in sub-Saharan Africa: a cross-national study.

"This paper discusses both the urban bias and world-system theories of overurbanization and presents a cross-national analysis of 32 African nations to test these perspectives. The analysis is divided into three parts. First, the effects of urban bias (i.e., the disparity in welfare between rural and urban areas) and economic dependence on overurbanization are examined. Next, the association between overurbanization and (1) the structure of the labor force and (2) economic growth is tested. Finally, the relationship between the structure of the labor force and economic growth is evaluated." The results indicate that "the rural-urban disparity and foreign investment facilitate overurbanization, and that an increase in level of overurbanization has a deleterious impact on both the structure of the labor force and economic growth. Furthermore, there is strong evidence indicating that an increase in service-sector employment has a negative effect on economic growth."

Africa↗
PubMed2003

Rupture of the lesser gastric curvature after a Heimlich maneuver.

BACKGROUND: We present a case of lesser gastric curvature injury after a Heimlich maneuver due to obstruction of the breathing tract that was repaired by laparoscopic surgery. METHODS: A patient with perforation of the lesser gastric curvature as a result of closed abdominal traumatism was operated on using the laparoscopic approach with the use of four trocars as work openings. With this technique, the diagnosis was confirmed, the injury repaired, and the abdominal cavity washed. RESULTS: The postoperative period was favorable and the patient was released from the hospital on day 7 without any complications. CONCLUSIONS: Laparoscopic surgery can be technically reproduced in the treatment of gastric injury as a result of closed abdominal traumatism.

Aged↗
PubMed2006

Degradation behavior of hydrophilized PLGA scaffolds prepared by melt-molding particulate-leaching method: comparison with control hydrophobic one.

Porous PLGA/PVA scaffolds as hydrophilized PLGA scaffolds for tissue engineering applications were fabricated by a novel melt-molding particulate leaching method (non-solvent method). The prepared scaffolds exhibited highly porous and open-cellular pore structures with almost same surface and interior porosities (pore size, 200-300 microm; porosity, about 90%). The in vitro degradation behavior of the PLGA and PLGA/PVA scaffolds was compared at 37 degrees C in PBS (pH 7.4) with and without the solution change everyday to see the effect of solution pH as well as scaffold hydrophilicity on the degradation behavior. The changes in dimension, molecular weight, mechanical properties (maximum load and modulus), and morphology of the scaffolds were examined with degradation time. The degradation behavior of the PLGA and PLGA/PVA scaffolds was further investigated in vivousing a rat model (subcutaneously implantation). It was observed that both PLGA and PLGA/PVA scaffolds in decreasing pH condition (PBS no change) showed faster degradation than those in constant pH condition (PBS change everyday), owing to the enhanced intramolecular depolymerization by the increment of chain hydrophilicity caused by carboxylate groups as well as the autocatalysis of carboxylic acids accumulated in the solution by the cleavage of PLGA backbone ester bonds. The scaffolds in vivo condition also showed faster degradation than those in vitro, probably due to the aid of foreign body giant cells or enzymes. The PLGA/PVA scaffold showed slightly faster degradation than the PLGA scaffold for both in vitro and in vivo conditions.

Animals↗