解剖M-型超声技术评价冠状动脉支架置入术后局部室壁运动变化

目的：采用解剖M-型超声技术评价冠状动脉内支架置入术前后左室局部室壁运动的改变。方法：30例行左前降支(LAD)支架置人术的患者，在术前72h内、术后72h内以及3个月时分别进行超声心动图检查，在左室短轴二尖瓣切面和乳头肌切面的二维图像中获取前间隔、前壁、侧壁、后壁、下壁和后间隔等节段的解剖M-型超声图像，测量这些节段的室壁收缩期增厚率。结果：30例患者术后72h内检查显示，LAD对应节段(前壁和前间隔)的收缩期增厚率较术前显著增高。25例患者完成3个月随访，其LAD对应节段的术后72h以及术后3个月时的室壁收缩期增厚率，均较术前显著增高。结论：冠状动脉内支架置入术能迅速改善狭窄动脉供血区域的室壁运动，并维持至少3个月；采用解剖M-型超声技术测量室壁节段的收缩期增厚率，能准确评价支架置入术的疗效。     

General medicine and general practitioner. The viewpoint of the teachers at the Department of Medicine of Tunis

The general medicine remains a same survey subject in countries where the debate began since several years. We have led an investigation by questionnaire close to 50 chosen hospitalo-academic physicians by pull to the fate on the list of teachers of the faculty of medicine of Tunis. The majority of our investigated (90%) consider that the physician general practitioner is the physician of the individual in its totality, the counselor and the family's confidant. The formation that receives the future general practitioner currently doesn't prepare it to assure his role. To form the future physician better general practitioner, we think that it's necessary to define the general practitioner role, to adapt the formation to the role of the general practitioner and the specificity of the general medicine.     

Succinate links TCA cycle dysfunction to oncogenesis by inhibiting HIF-alpha prolyl hydroxylase

Several mitochondrial proteins are tumor suppressors. These include succinate dehydrogenase (SDH) and fumarate hydratase, both enzymes of the tricarboxylic acid (TCA) cycle. However, to date, the mechanisms by which defects in the TCA cycle contribute to tumor formation have not been elucidated. Here we describe a mitochondrion-to-cytosol signaling pathway that links mitochondrial dysfunction to oncogenic events: succinate, which accumulates as a result of SDH inhibition, inhibits HIF-alpha prolyl hydroxylases in the cytosol, leading to stabilization and activation of HIF-1alpha. These results suggest a mechanistic link between SDH mutations and HIF-1alpha induction, providing an explanation for the highly vascular tumors that develop in the absence of VHL mutations.     

Submental intubation for cancrum oris: a case report

Cancrum oris (Noma) is a devastating gangrenous disease that leads to severe tissue destruction in the face. We describe the anesthetic management of a 12-year-old girl with cancrum oris sequelae in a Rural Secondary level Hospital in Central India (Padhar Hospital). She presented with a large defect in her upper lip on the left side that extended into the columella and the floor of the left nostril. She was scheduled to undergo reconstructive surgery and the surgeons planned to use an Abbé flap based on the lower lip. For this, access to both the mouth and the nose was required. We considered a tracheostomy but decided to attempt the submental route for orotracheal intubation. Following intravenous induction the patient's trachea was intubated with a cuffed oral tracheal tube. This was passed through the submental incision and then reconnected. The surgery proceeded uneventfully and the patient was extubated before transfer. She made a satisfactory recovery and the submental scar healed without complication or scarring. We describe briefly the features of cancrum oris and review the technique of submental intubation (described in adults with midfacial trauma). The use of submental intubation in children and for cancrum oris sequelae has not been previously reported.     

Quinonic derivatives active against <Emphasis Type="Italic">Toxoplasma gondii</Emphasis>

Quinonic derivatives were tested against a virulent RH strain of Toxoplasma gondii maintained in cell culture in THP-1, a human myelomonocytic cell line. The derivatives were tested at various doses (0.5-4 microg/ml) and compared with the reference molecules clindamycine, sulfadiazine, pyrimethamine and atovaquone. The percentage of parasite growth inhibition was observed after 72 h of incubation. The tested derivatives are bicyclic, tricyclic or tetracyclic quinones. Eight of these compounds exhibit over 70% inhibition of parasite growth; and two were nearly equipotent to pyrimethamine. These data indicate that the most active compounds against the RH strain of T. gondii are bis-heterocyclic quinones.     

Cardiopericardial Hydatid Cysts

apd: 18 December 2000