Biomedical subjects

O Diarra

Publications and source records attributed to O Diarra.

15 recordsLinked to original sources

PubMed2005

The arch of the great saphenous vein: anatomical bases for failures and recurrences after surgical treatment of varices in the pelvic limb. About 54 dissections.

The arch of the great saphenous vein presents numerous tributaries. Misappreciation of their anatomical variations might cause recurrence after surgical treatment of varices. We dissected 54 inguino-femoral regions of fresh, black African corpses. Our purpose was to study the anatomical variations in the vein confluents of the arch of the great saphenous vein; its positions in relation to the external pudendal artery; establish palpable anatomical markers for its surgical approach. The conventional type in a 'vein star' shape was not the most frequent. Upper or abdominal common vein produced through the merging of superficial veins of the anterior abdominal wall and genital or internal common vein were more frequent. An anterior saphenous vein was found in 23 cases. The external pudendal artery crossed beneath the arch of the great saphenous vein cross in 56% of cases and previously in 44% of cases. On average, the top of the arch of the great saphenous vein was projected out 10.88 cm from the ventral and cranial iliac spine, 3.83 cm from the pubic tubercle and 4.19 cm from the inguinal ligament. In view of our results, variations are real. Knowing and taking them into account are essential to prevent recurrences after surgical treatment of varices of the pelvic limb.

Cadaver↗

PubMed2005

[Head and neck paragangliomas in Senegal. About 8 cases].

UNLABELLED: Paragangliomas are uncommon neoplasms with rare occurrence in the head and neck area. OBJECTIVE: The purpose of this study was to report the experience of management of these rare tumors by a team of Ear, Nose, and Throat (ENT) surgeons working in the context of a sub-Saharan country. MATERIAL AND METHODS: We conducted a retrospective study in the Ear, Nose and throat Department of a Dakar university hospital. The study concerned 8 patients with a highly vascular tumor located in the neck and temporal bone. The preoperative investigations were computed tomography scanning (CT scan) using contrast injection in 88% and Doppler ultrasonography for the patients with a neck mass. All the patients underwent surgery except one. In 2 cases, the management with a team of vascular surgeons was necessary. Histological examination of the tumor was realized in all cases. RESULTS: The tumor was located in the neck in 5 cases (62,5%) with a carotid body tumor in three patients (37,5%) and vagal location in two (25%). The temporal bone was involved in three patients with a tympano-jugular location (37,5%). All the neck masses were operated on via a unique cervical approach. The tympano-jugular tumors were treated by radical mastoidectomy in two patients. In the third patient with a tympano-jugular tumor, with important involvement of the temporal bone, only the neck extension was operated. The histological diagnosis of paraganglioma was confirmed in all patients. Radiation therapy was delivered in two patients (25%), to complete surgery in the event of extensive temporal bone tumor and exclusive in one case of an inoperable vagal tumor. The outcomes, marked early death in one patient (14%), were good in the short and mid term for the others patients. CONCLUSION: With the improvement of technological infrastructures, particularly with developing modern imaging, we have better knowledge of paragangliomas in the head and neck area, in our experience in a developing country. However, therapeutic approaches are still limited by modest humans and material resources.

Adolescent↗

PubMed2005

[Complications of treatment of adult's groin hernia: a report of 100 cases comparative study between Bassini and Mac Vay's technics].

The authors report a prospective study comparing pre and immediate post operative complications of non complicated hernia of the groin in adult treated by operations based on Bassini and Mac Vay technics. It concerned a total of 100 patients made up of two groups of 50 age ranging from 13 to 84 years with an average age of 47 years of whom were 93 males and 7 females. No mortality was registered. The rate of complications was 20% in Bassini's technic and 22% in Mac Vay's technic. There were: bladder injurie, accidental skin wound incurred by the electric surgical blade, meningeal irritation, urinary retention, scrotal sac hematoma, parietal suppuration, intestinal occlusion and immediate recidivation before 6 months. As well as our study as in literature, specific complications related to both technics were rare. We could draw the conlusion that there is no significant superiority of one technic in comparison with the other one.

Adolescent↗

PubMed2004

[Sternoclavicular dislocations: clinical and therapeutic study. A report of 9 cases].

Sterno-clavicular dislocations represent an uncommon pathology in shoulder trauma. The authors describe the anatomical and clinical forms observed between January 1999 and December 2002, and evaluate the treatment process. The retrospective study addressed 9 patients (men only) with an average age of 26.6. Based on the duration of the consulting period, one could distinguish old forms from more recent ones. Diagnosis would help to see anterior forms from posterior forms. Evaluation criteria were: pain, mobility of the shoulder, visibility of the deformation of the sterno-clavicular joint. Six types of anterior dislocations were listed, including 4 recent and 2 old ones. There were 3 recent posterior forms. The anterior recent forms, which were treated in orthopedics, showed a positive evolution. As there was no functional disability, it was wiser to refrain from any treatment of the anterior old forms. The posterior forms, two of them were operated (osteosynthesis) revealed no functional deficit after treatment. However, one of the patients had a broken implant. Scanner facilitated the diagnosis of sterno-clavicular dislocations. The anterior forms, which are more frequent and benign, are different from the posterior forms, which are emergency cases due to the proximity of the aero-digestive and cardiovascular elements. Their surgical stabilization requires techniques related to ligamentoplasty rather than using osteo-synthesis equipment which may move away or break off.

Adolescent↗

PubMed2003

[Vascular dysplasia in vascular surgery in an African area: 28 cases at the Dakar teaching hospital].

This retrospective study was conducted to analyze the anatomic and clinical data concerning vascular dysplasia in vascular surgery patients seen in an African hospital and to assess its role in treatment. Twenty-eight patients (14 women and 14 men) were treated for vascular dysplasia between 1994 and 1998. There were 8 cases of hemangioma and 20 cases of vascular malformation. Average age of patients with hemangioma was 3.23 years, with a sex ratio of 0.33. There were 4 cases of mixed hemangioma, 3 of cutaneous hemangioma, and 1 of subcutaneous hemangioma. Cervicocephalic (n=4) and limb (n=3) localizations were the most frequent. Duplex Doppler did not reveal any signs of muscle disease. Four patients underwent surgery, for an early indication in 3 and a late indication in 1. Resection suture was performed in 3 cases and resection graft in one. Mean follow-up was 85.90 days. There was one case of early suppuration. There were no cases of recurrence or late complications and the operative wounds healed well. Vascular malformations concerned 20 patients (sex ratio 1.5, average age 15.55 years) with 16 cases of venous malformation including 4 patients with Klippel Trenaunay syndrome, three with arteriovenous malformation and one with capillary angioma. CT and arteriography were obtained in all cases. Limb localizations predominated (14 patients). In-depth extension was found in 6 cases of venous malformation. Sixteen patients underwent surgery for functional indications in 7. Resection suture was performed in 11 cases. Mean follow-up was 85.90 days. There were 4 early and 2 late postoperative complications. There has been no recurrence. Anatomic and clinical polymorphism of vascular dysplasia requires multidisciplinary collaboration in which vascular surgery plays an important role in complex or complicated forms of the disease in patients attending facilities with limited resources.

Adolescent↗

PubMed2003

[Purulent pleurisy at the surgical emergency service: retrospective study of 34 cases at Dakar Teaching Hospital].

The empyema thoracis remain a current pathology in under developed countries. The aim of this study was to evaluate the incidence of empyema thoracis in the Surgical Emergency Unit, to analyze their causes, therapeutic procedures and their results. Between 1997 and 1998, 54 patients were received in urgency for empyema thoracis; 34 of them had a complete and exploitable file. Mean age was 20 years (3 weeks and 83 years) with 64.70% of children (0 to 15 years) and the sex ratio 3.25. Fever (85.70%) and cough (73.52%) were the most frequent symptoms. Twenty nine patients (85.3%) had pleural empyema and 5 a hydropneumothoracic image. Empyemas were related to pneumonia in 11 cases, associated to tuberculosis in 5 cases and were primitive in 18 cases. Bacteriological exam of the pus performed in only 18 patients had revealed a pneumococcus in 4 cases (22.23%) and was negative in 9 cases (50%). Closed chest drainage associated with antibiotics, pleural washing and respiratory kinesitherapy was done in all the cases. The average duration of hospitalisation was 24.56 days (1 to 55 days). Five deaths (14.70%) occurred. Two cases of recurrence were noted requiring a second drainage. Three cases of pachypleuritis had required a thoracotomy for pleural decortication in average time of 6 months. The duration of follow-up was 1 year. For the other 24 patients (70.58%) the evolution was good. Urgent closed chest drainage of empyema thoracis combined with antibiotics, pleural washing and respiratory kinesitherapy allows a good evolution and reduces the risk of pachypleuritis.

Adolescent↗

PubMed2003

[Anesthesia in the pleuropulmonary complications surgery of tuberculosis: a 79 cases study].

Reported is a retrospective study carried out from Aristide Le Dantec Hospital in patients who underwent pleuropulmonary surgery after tuberculosis complication, from June 1995 to June 1999. The aim of this study was to evaluate the anaesthesiology procedures and outcomes of tuberculosis pleuropulmonary complications surgery. Seventy nine patients were studied. Their mean age was 34.63 years, and the sex ratio was 3.14. They all underwent general anaesthesia procedures with barbituric, morphinics et myorelaxants drugs. The peroperative complications noted were distributed as follow: 50 cases of haemorrhage needing transfusion, 18 cases of hypotension associated to the anaesthesia. In the intensive care period, we have noticed 30 atelectasia cases associated to a spastic bronchopathy, 3 cases of pulmonary oedema and 1 case of pulmonary infarctus. In the postoperative period, 8 cases of hemodynamic instability occurred, including 5 cases of cardiovascular collapsus treated by filling, and 2 septic shocks cases. An infectious bronchopneumopathy was noticed on 11 patients with two cases of septicaemia. The mortality rate was 6.3% (5 cases of death). The pleuropulmonary surgery in tuberculosis complication is very haemorrhagic, and therefore require an adequate preoperative preparation.

Adolescent↗

PubMed2002

[Long term course after thyroidectomy for euthyroid nodular goiter].

Every patient operated for nodular goiter by a partial surgery is exposed to recurrence. In order to verify this idea, the authors followed 36 patients operated on for nodulargoiterat least 10 years ago. A clinical examination for all the patients and echographic study for 24 of them allowed the detection of recurrence and the evaluation of survival and recurrence without any opotherapy. It seemed that clinical recurrence is observed in 16.65% of cases whereas echographic study revealed recurrence in 50% of patients examined. Only two patients were reoperated on. The predictive factors of the recurrence are geographic endemic origin and ethny, partial surgery and vesicular goiters. With 66.65% of survival without recurrence at 18 years without opotherapy, the authors argue about the utility of such treatment.

Adult↗

PubMed2002

[Role of elastic compression in the treatment of postphlebitic leg ulcers at the University Hospital of Dakar: report of 20 cases].

Varicose disease and venous thrombosis were reputed exceptional among black africans and almost all leg ulcers were called "tropical". We have treated 20 cases of postphlebitic ulcers in the teaching hospital of Dakar between march 1989 and december 1992. There were 12 men and 8 women. Mean age was 40 years (24 to 60 years). The initial venous thrombosis dated at mean 8 +/- 3 years. It was confirmed in a hospital in 10 cases and found in the medical history of all patients. All patients presented leg ulcers with non systematised venous varicose and trophic troubles. The ulcers treated only by dressings lasted a duration of 4 months (2 weeks to 9 months) without healing. In view of this failure we have added an ambulatory elastic contention with elastic bandage putted on at hospital after that biweekly dressing until cicatrisation followed by putting elastic socking with degressive compression. We have observed a quickly cicatrisation in mean time of 4 weeks (2 to 6 weeks) with good tolerance of socking. Only 3 patients showed recurrence. Elastic contention has a great place in the treatment of postphlebitic ulcers which are not that exceptional among black Africans.

Adult↗

PubMed2001

[Feasability of a heart valve bank in Dakar. (Preliminary study of 8 human hearts)].

Authors record a preliminary study led so as to develope techniques of preparation of the cardiac homograft valves. Eight human hearts have been appropriated in the course of medico-legal autopsy. Under sterile hodd, the heart was dissected, aortic and pulmonary valves as well as a mitral valve fragment were collected for a total of 24 valvular levies. After sterlization in an antibiotic solution, valves were preserved at 4 degrees C for the mitral fragment specimen of fresh allograft and to - 196 degrees C in Nitrogen liquidates for the pulmonary and aortic valves. The control of graft quality had consisted in tests of competence during the dissection, to the evaluation of the histological study as well as tests of sterility. Cellular cultures had shown a fibroblast proliferation in 3 cases. It concerned an indeed reliable method but difficult and little sensitivity. Histological tests had shown two types of injurie: the myxoid degeneration (7 times on 8 valves) cryopreserved and a coagulative necrosis whose distribution was identical forthe two modes of conservation. Antibiotic's solution seemed to induce these injuries as do heart ischemia, and the traumatism lihleed to the great cold. The tests of sterility had shown a rate of contamination to 25 % essentially by Pseudomonas. In view of the installation of a behle of allograft bank of quality, we'll need to improve conditions of leavy, to use a freezer adaptation for progressive cryocongelation and the choice of simple method to evaluate valvular viabilty.

Adolescent↗

PubMed2001

[Evaluation of surgical treatment of anal fistula].

Second reason for consultations in proctology in our department after hemorroïds-linked illnesses, fistulas in ano constitute a chronic disease which causes therapeutic difficulties linked mainly to the futur functionning of the sphincter, especially in its most complex types. In our group of 43 patients in whom surgical exploration with stylet was the key of the diagnosis, the anorectoscopy and even less chirurgical examination were not often contributive, the fear of post-operative incontinence forced us to prefer ligation-section with rubber every time that the sphincter was involved. With our results, the majority of patients (41/43) healed in normal periods with a sufficient functionning of the anus. This result confirmed our attitude towards the sphincter: that is to save if possible.

Adolescent↗

PubMed2001

[Duodenal ulcer: truncal vagotomy with celioscopy. Report of 53 cases].

The recent introduction of laparoscopic surgery in the therapeutic arsenal of duodenal ulcer enabled us to carry out these interventions by abdominal route in order to appreciate the early results. It concerned a prospective study from March 1999 to August 2000 of 53 cases of which were 47 men and 6 women, aged from 16-75 years average age 52 years. Twenty six patients had pyloro-duodenal stenosis, the rest, chronic duodenal ulcer. Vagotomy was carried out on a patient on dorsal decubitus under general anesthesia with oro-tracheal intubation operator within the legs of the patient and the monitor at the right hand side. The process required four trocars depending on the morphology of the patient. A pneumoperitoneum of 3-5 litres permitted to attain the oesophagial hiatus by collapsing the pars-flaccida of the minor epiploon, the reperation of the right diaphragmatic pillar and the discovery of the posterior vagus nerve which was coagulated and sectioned. The traction of the body of the stomach towards the ombilious exposed the anterior portion of the stomach, thanks to the coagulator, the anterior branches of the vagus nerve are sectioned. Drainage by minilaparotomy terminates the intervention if only stenosis existed. Mortality was nul. The time of intervention was 35 to 135 minutes with an average of 71 minutes. The hospital stay was between 3 and 12 days with an average of 5 days. Three conversions to laparotomy (difficultdissection, liver cirrhosis, breakdown of materials), pleural wound consisted the morbidity. Two cases of re-operation due to evacuaton poorly appreciated in pre-operation period were observed. The results according to Visick criterias were: 1 : 51; II : 0; III : 0; IV: 2 patients for a follow up of 3-17 months. Vagotomy under coelioscopy is an intervention which permits to obtain results comparable to those of conventional surgery.

Adolescent↗

PubMed2000

[Surgical aspects of pulmonary aspergilloma in 24 patients].

From January 1991 to July 1998, 24 patients were operated for pulmonary aspergilloma. All the patients presented previous tuberculosis treated. Hemoptysis had been the revealing elements of the illness in 80% of cases. Treatment was by resection in all the cases: 13 pneumonectomy (54%) and 11 partial resections (46%). The procedures were usually difficult and hemorrhagic. The global mortality was 20%, can be explained by the high number of major resections and the unfavourable general state of health of our patients. Post operative complications are mainly due to secondary empyemas encountered in 15% of the surviving ones. The surgical resection of pulmonary aspergilloma is still difficult and risky for extended underlying parenchymal disease. Minima procedures such as speleotomy and intra cavitary aspiration technique must be indicated in patients with very poor general condition.

Adult↗

PubMed1996

[Pyramido-lunar fusion in black Africans. Apropos of 32 cases].

Lunotriquetral coalition is a congenital carpal anomaly rarely discovered in a white population. In the black population, most cases have concerned blacks in America, Australia and South Africa. In the Sub-Saharia area, in Senegal, the authors, after 8 incidental cases, report 32 lunotriquetral coalitions collected in 20 patients. This retrospective study comparatively analysed 361 X-rays of the wrist performed between February 1989 and July 1992 in the Orthopaedic and Traumatologic Center (CTO) in Dakar. The bony coalition was bilateral in 12 patients and unilateral in the other 8 cases. The complete form (type III) was the most frequent (46.8%). In the bilateral forms, 5 patients presented this complete form. Lunotriquetral coalition was associated, in absence of congenital abnormalities, with a synovial cyst of the wrist (2 cases), scaphoid fracture (1 case), non-union of a scaphoid fracture (1 case) and osteoarthritis of the wrist (2 cases). After review of the literature, the authors discuss racial factors, anatomo-radiographic forms and associated injuries.

Adolescent↗

PubMedDate not supplied

Sites of attachment and density assessment of female Ixodes ricinus (acari: ixodidae) on dairy cows.

A sample of 110 lactating dairy cows was examined to describe the attachment sites of female Ixodes ricinus ticks and to assess whether counts on one or two body areas can predict infestation and its level. Seventy per cent of the cows were infested by I. ricinus and the average tick burden on the infested cows was 15, ranging from 1 to 136. Preferred attachment sites were the axilla, udder/groin, neck, dewlap and flank. Udder/groin and axilla carried respectively 35.3% and 44.1% of the total tick burden. To predict infestation (yes/no), sensitivity of counts on axilla, on udder/groin and on both areas was respectively, 76.6%, 80.6% and 94.8%. Total burden prediction equations based on count on axilla and udder/groin are presented.

Animals↗