Biomedical subjects

A Dia

Publications and source records attributed to A Dia.

At least 37 records · Page 2Linked to original sources

PubMed2002

[Anatomical and surgical study of the medial calcaneus branch of tibial nerve].

To better understand the anatomical variations of the medial calcaneus branch, the tibia nerve were dissected in 20 ankles of fresh black African cadavers. The medial calcaneus branch which is a collateral branch of tibial nerve was constant. It was unique in 80% of cases and was detaching itself from the trunk of the tibial nerve at the entrance of the calcaneal sulcus. It was in the form of two small nerves with point of departure from the commun tibial nerve trunk. These anatomic constatations confronted with those published in literature permits us to understand the etiopathogenic aspects of certain neuropathies of the ankle. To add this they impose a certain order if precautions in the operational surgical route of the posterior section of the ankle.

Duplicate Publications as Topic↗

PubMed2001

Release of trace elements in wetlands: role of seasonal variability.

Dissolved concentrations were determined for Fe, Mn, Al, Cu, Zn, La, U, Th, Cd and As in a wetland and its recipient stream to reveal the effect of seasonal changes in environmental conditions on the cycling and transfer of trace elements at the transition between terrestrial and aquatic ecosystems. These preliminary results from the wetland show marked seasonal changes in dissolved concentration for all elements except Zn and Cu. Concentrations are found to be low until about mid-February and then increase abruptly. The onset of trace element release appears to coincide with a marked decline in redox potential and increase of organic carbon content. Because this decline is itself correlated with a pronounced increase in temperature and dissolved Fe. Mn and organic carbon content, we suggest that the microorganisms which use soil iron and manganese oxy-hydroxides as electron acceptors catalyzed the change in redox conditions and induced an increase of DOC. Temporal changes were also observed in the recipient stream which showed marked positive concentration peaks during stormflow events (except Zn). The seasonal processes occurring in the wetland appear to play a major role in determining the amount of trace elements which are transferred from the wetland to the river.

Copper↗

PubMed2001

[Vaginal hysterectomy for hysterocele (report of 36 cases)].

Vaginal total hysterectomy get to better qualily of lite to patients who have genital prolapse. It gives no abdominal scar. The feeding and rising are early. Among a serie of 36 total vaginal hysterectomies for hysteroceles we performed, we report few complications. One patient presented a plentiful peroperative haemorrhage : three others present a vesical wound. We report one case of releasing suture, one had setting of bladderand one case of vaginal infection. One patient died from a cause not reliable to the procedure. The mean duration of the hospital stay was 8.36 days. After 4 years following up, 2 patients have elytrocele recurrence, and one other presents a bad reducing of cystocele. We hope to pursue this serie strenghen then our results.

Adult↗

PubMed2000

[Emergence and course of the ilioinguinal nerve of the groin].

The aim of our study was to find a way of preserving the ilioinguinal nerve during surgical procedures for the repair of inguinal hernias. 40 inguinal regions were dissected, 37 ilio-inguinal nerves studied. The emergence of the nerve was at 4.21 cm of the anterior superior iliac spine, at 0.78 cm of the inguinal ligament on average. Its course was parallel to the inguinal ligament, always lay under the aponevrosis of the external oblique abdominal muscle, it passed through the superficial abdominal ring in 67.56% before proceeding on anterior side of spermatic cord. This result allowed us to examine the possibility of the nerve course variation's, of anastomosis with iliohypogastric nerve and particularly the best way to identify it when surgical procedures are performed in the lower portion of the abdomen.

Hernia, Inguinal↗

PubMed2000

[Lumbar hernia through the Jean Louis Petit triangle: anatomic and clinical aspects].

Lumbar hernia through Jean Louis Petit Triangles is rare. Usually asymptomatic, it is sometime revealed by lumbar mass or a complication. Surgical treatment consists on parietal repair. This could be done by direct suture, muscular plasty or prothetic material. We hereby, report three cases of lumbar hernia. We get the opportunity to make an update in the anatomical, clinical and therapeutical point to view.

Abdominal Muscles↗

PubMed2000

[Adnexal masses in the Surgical Clinic of the University Hospital Center of Dakar, 74 cases].

The aim of this study was to assesss epidemiological, clinical and the therapeutic aspects of annexial masses. We have performed a retrospective study from 15/09/1994 up to 31/12/1997 including 74 patients. The prevalence rate was 18.40% of the overall gynecologic surgery in our department. Mean age was 36 years old. The range 30-41 years represented 40.5% of our cases. The mean gestity was 4 and the average parity 4. The most common clinical features were pelvic pains (75.57%) and hypogastric masses (50%). The duration of the disease ranged from 1 to 10 years. The general status was good in 94.59% of cases, bad with ascites in 5.41%. The annexial masses were cystic in 87.83%. The ovarian cysts were located at the both sides in 45.94, and bilateral in 8.10%. The annexial masses were solid in 9.45%. An abscess was found in 6.75%. We have performed an annexectomy in 66.1% and a cystectomy in 16.21%. The post operative complications were wound suppuration in 13.51%. The mortality rate was 1.35%. At the long-term follow up we have noticed an eventration in 1.35% and a recurrence with need of reintervention in 16.21%. The pathologic exam found a benign tumor in 95.16% and a carcinoma in 4.84%. The annexial masses are very common in our practice. They involve young multipare women. The main clinical outcome is pelvic pains. Annexectomy is the principal treatment.

Academic Medical Centers↗

PubMed1998

The recurrent laryngeal nerve (RLN): application to transhiatal oesophagectomy.

To emphasize the risks of recurrent laryngeal nerve lesions during transhiatal oesophagectomy an anatomical study of the course of the recurrent laryngeal nerve (RLN) was performed. Twenty RLN were dissected in their thoracic portion. This work showed the constancy of the low origin of the nerve in the adult under the aortic arch, and its course in the tracheal angle. It confirmed the close connections of the nerve with the posterior mediastinal viscera. Lastly, it displayed oesophageal nerve branches arising from the RLN and a few anastomoses between them and the tracheal nerve branches. This anatomical disposition resulted into the difficulty of transhiatal oesophaphagectomies and the risk of injury of the recurrent laryngeal nerve. The possibility of nerve lesions can explain the respiratory complications of this surgical approach.

Adult↗

PubMed1998

[A left paraduodenal hernia--a case report].

The left paraduodenal hernia obtains when the small intestine goes through the left paraduodenal fosset. It (the hernia) develops on the left, at the back of the descending mesocolon. The present authors study one case looking at its pathogeny and the clinical and therapeutic problems posed by such a variety of congenital internal hernia. The authors emphasize, in particular, its morbid associations with the volvulus of the pelvic colon. Finally they highlight the importance of a through and careful exploration of the abdominal cavity during any laparatomy following an occlusive syndrome.

Abdominal Pain↗

PubMed1998

Geographic variation in viral load among hepatitis B carriers with differing risks of hepatocellular carcinoma.

The risk of hepatocellular carcinoma (HCC) varies significantly among hepatitis B virus (HBV) carriers from different geographic regions. We compared serological markers of HBV infection in adult male carriers from Haimen City, China and Senegal, West Africa, where the prevalence of chronic infection is similar. HCC mortality among HBV carriers is much higher in Haimen City than it is in Senegal (age-standardized rate, 878 versus 68 per l0(5) person-years). A dramatic difference was observed when HBV DNA levels in serum were assessed among carriers by Southern blot. In the Senegalese group (n = 289), 14.5% were HBV DNA positive by Southern blot in their 20s, and this percentage declined in each subsequent decade of age to 3.3, 2.9, and 0% thereafter. In the Chinese group (n = 285), a higher prevalence of HBV DNA positivity and a less consistent reduction were seen; 29.4% were positive in their 20s, and 30.2, 23.6, and 20.6%, respectively, were positive in each subsequent decade of age. Among 102 male Asian-American HBV carriers, the prevalence of HBV DNA positivity was intermediate between the Chinese and Senegalese populations (36.8, 10.7, 3.0, and 4.6% in each subsequent decade of age). Viral titers were similar among those who were HBV DNA positive in all three populations [median value, 10(7) virions/ml (range, 10(6)-10(9) virions/ml)]. The presence of HBV DNA in serum was positively associated with serum glutathione S-transferase, a marker of liver damage. These findings suggest that the more prolonged maintenance of productive virus infection in the Chinese carriers compared with the Senegalese carriers may explain their higher risk of HCC. This profound difference in the natural history of chronic infection may be due to earlier age of infection in China or to as yet unknown environmental or genetic factors.

Adult↗

PubMed1998

[Total vaginal hysterectomy for genital prolapse apropos of 10 cases].

There are many variants in vaginal hysterectomy procedures owing to precises indications. We have performed a total vaginal hysterectomy procedure which technique is described herein. Our procedure was using the preexisting anatomic structures. It allows a solid cure adapted to each compound of the genital prolapse. Among a series of 10 cases, we report few complications. An important peroperative bleeding occurred in one case. The postoperative morbidity included 1 case of genital infection and 1 case of urinary fistula. One patient died from a cause not reliable to the procedure. The mean duration of the hospital stay was 10 days. After 2 years follow up, 9 of our patients have good anatomical and functional results. The shortness of this series does not allow us to concluded definitively. However, our results are comparable with those reported in the literature.

Evaluation Studies as Topic↗

PubMed1997

[Anatomic study via dissection of the common fibular nerve: etiopathogenic consideration].

In order to understand and prevent the particular rate of the common fibular nerve palsy during the traumatisms of the main stem of the sciatic nerve; the authors have studied through dissection the osteomuscular and aponeurotic relationships of 38 common fibular nerves. They blame it on the relations between the nerve and the proximal ends of the fibula; the nerve can be stretched on and mainly on its fixation on the crural fascia by fibrous tracts seen in 78.94 of the cases.

Adult↗

PubMed1996

[The sensitive branch of the radial nerve at the inferior third of the forearm and at the wrist. Clinical applications].

The sensitive branch of radial nerve is superficial at the inferior third of forearm. This explain frequency of their operative lesions. The purpose of our work is to study his anatomy for choosing surgical approach who protect the nerve. The sensitive radial nerve was dissected is 20 cadaver forearms and wrists. The ride of the nerve and his terminal branches was constant at the lateral side of the radius may be the origins of the terminal branches was variable with 40% of specimens innervating the radial 2 1/2 digits. This is the common terminal distribution of the nerve. The authors do not recommended lateral approach advise anterior surgical approach for the inferior third of the radius to prevent nervous lesions, disagreeable in post-operative period.

Forearm↗

PubMed1994

[Arterial vascularization of the sinoatrial and atrioventricular node (preliminary study apropos of 15 anatomic parts].

Arterial supply to the sino-atrial and atrioventricular node is studied after coronary RHODOPAS injection on 15 adult hearts taken off during autopsy. Both coronaries were injected in 7 cases, left ostium in 2 cases and the right on in 6 cases. The sino-atrial node is supplied by the right sino atrionodal artery (S.A.N.A) in 6 cases upon 7 and in 3 cases by the left S.A.N.A. Anastomoses exist in 2 cases between the right S.A.N.A. and the left S.A.N.A. The atrio-ventricular nodal artery arises from the retro-ventricular trunk branching from the right coronary artery mainly. The authors emphasize that care must be taken to protect the vascular supply to the conduction tissue during cardiac surgery.

Adult↗

PubMed1994

[Anatomy of coronary arteries].

To study the coronary arteries we collected 200 black african hearts which coronaries have been injected with Rhodopast then corroded. Most of the arteries (74.10%) originate from two separate sinuses one on the left and the other one on the right. The right coronary artery runs in two different modes. In one mode it is short and ends in different branches. In the other mode it is long and runs up to the crux. The left coronary artery arrives on the left border of the heart and gives the circumflex and the left border artery. The bifurcation mode of division was 32.25% for the right coronary artery and 69.35% for the left coronary artery which had à trifurcation in 36.66%. The superior atrial artery was not seen in 3 cases and the infundibular arteries derived from the aorta in 3 cases. We have encountered intercoronary anastomoses in 82.6% of cases. These results are similar to these observed in the literature. The only difference is on the rich intercoronary anastomosis which seems to be an african particularity even though we cannot establish if they are functional or not.

Arteriovenous Anastomosis↗

PubMed1994

[Anatomic pitfalls of vagotomies].

In order to minimise relapses and functional problems after vagotomies, an anatomic study of the vagus nerve at the base of the esophagus and stomach was carried out. Fifty stomachs of adult black African corpses were collected, placed in a formaldehyde solution and then dissected. At the level of the esophageal hiatus, the trunks of the vagus nerve were found in 46% of the cases for the anterior vagus and 24% for the posterior. At the level of the abdominal esophagus there was a single anterior vagus in 68% of cases and single posterior vagus in 64% of cases. At the level of the greater curvature, a recurrent anterior branch was found. At the level of the lesser curvature, the main nerves had a plexiform appearance in 8% of cases for the anterior nerve and 6% of cases for the posterior nerve. The classical arrangement was found in 60% of cases for the main anterior nerve and 64% of the cases for the posterior nerve. At the level of the angulus, the classical crowsfeet was found in 20% of cases for the anterior vagus and in 32% of cases for the posterior vagus. The anterior vagus was plexiform in 54% of cases and 46% of cases for the posterior. This study confirms the extreme variability of the vagus in the stomach. A better knowledge of the variations should lead to more successful vagotomy regardless of its forms.

Female↗

PubMed1993

[Colic occlusions: retrospective study of 62 cases].

The profile of colic occlusions has been drawn from sixty two (62) observations made at the Surgical Clinic between 1970 and 1984. The male sex was slightly more affected (3 men for 2 women) with the age of the patients ranging from 19 to 82 years. The clinical sign could be summed up as following: a montrous ballooning of the abdomen which is asymmetrical in 89% of the cases. The occlusions with a stade of shock represented 58% of our observations. The abdomen plain film exhibited the characteristic signs in 89% of the cases. The etiology is dominated by the volvulus of the pelvic colon in 83% of the cases. The essentially surgical treatment has mostly consisted on a resection-anastomosis. Mortality rate was 9.7%. Late consultation of the patients, the shortage of fully equiped medical infrastructure explain the gravity of the affection.

Adult↗

PubMed1993

[Radiculo-medullary arteries of vertebral origin. Various anatomic aspects from 30 injections-dissections].

Among medullary arteries we have only examined those directly arising from the vertebral artery at the cervical level. This study is about thirty anatomical samples of cervical spine removed during necropsies; there are treated by injection-dissection method. The observed variations do not allow isolation of any artery for the cervical bulge, as possible most frequently at the lumbar bulge level. We observed variations as sometimes alternate pedicles right or left, as sometimes a symmetrical aspect finishing at the same medullar level. By injecting differently colored liquids, in the right and in the left, a side prevalence has sometimes been noted but real conclusions cannot be draw without isobar and simultaneous injections.

Adult↗

PubMed1992

[Anatomic study of the anterior interventricular artery (Ramus interventricularis anterior). Apropos of 200 anatomical samples].

The coronary system has been studied on the basis of 200 hearts taken during necropsies and treated by injection of a synthetic resin followed by corrosion. Sixty samples were used for the study of the L.A.D. and one hundred and fifty were used for studying intercoronary anastomosis on L.A.D. The study highlighted the following particularities: the left coronary is the most common origin of L.A.D. (90 per cent cases); the L.A.D. irrigates: all the left ventricle ventral wall, the right apical part of both ventricles and the upper portion of the interventricular septum; out of 92 anastomoses, 49 were located on the L.A.D. which could protect against ischemia.

Coronary Disease↗