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Biomedical subjects

P Bonnette

Publications and source records attributed to P Bonnette.

51 records · Page 3Linked to original sources
PubMed1990

Laser in bronchology: methods of application.

The method of application for the endoscopic resection by Nd-YAG-Laser closely depends on the choice of indications. The use of rigid bronchoscope is compulsory in the field of Laser, because of tracheobronchial obstruction in patients which are more or less on the verge of asphyxia. The resection is achieved under general anesthesia. A Nd-YAG-Laser (1.06 wavelength) with 100 watts maximum power is satisfying. The new 200 microns fibers are nearly perfectly flexible and increase the range of endobronchial laser-application. For some time we used a superpulsed mode of laser emission which obtains a real evaporation of tissues instead of carbonization. Cryotherapy may be useful before some resections to minimize bleeding. Endoprotheses can prolong the therapeutic effect of recanalization achieved by laser in end stage carcinomas.

Airway Obstruction↗
PubMed1990

[Esophago-bronchial fistula in adults].

The authors report five cases of benign oesophago-bronchial fistula in adults. These chronic bronchitic patients presented with recurrent episodes of secondary lung infections (or even haemoptysis). Questioning of the patients revealed a history of coughing when swallowing liquids in three cases. Two women concealed this symptom, which was only revealed retrospectively. The fistula was detected by upper GI series in three cases and by oesophageal fibroscopy in one case. In the remaining case, it was discovered at operating for severe haemoptysis. In four of the five cases, the fistula was situated on the right and was of post-tuberculous origin. In one case of post-traumatic fistula, it involved the left main bronchus. All of the patients were operated: a resection-suture of the fistula was performed via the oesophageal approach and, via the bronchial approach, simple suture of the fistula was possible in two cases, while resection of the destroyed pulmonary parenchyma was necessary in three cases (one right lower lobectomy, two bilobectomies). Demonstration of the oesophago-bronchial fistula, definition of its site and assessment of the condition of the pulmonary parenchyma are essential steps to be performed prior to surgery.

Adult↗
PubMed1983

[Section of the left triangular ligament of the liver. Connection between the left diaphragmatic and suprahepatic veins].

Connection between the left hepatic veins and inferior diaphragmatic veins were studied after injection in 20 embalmed cadavers. An unusual (5%) variant is described in which the left diaphragmatic vein replaces the left posterior hepatic vein and drains sub-segmental branches. Simple methods to recognize this abnormality are described. In such cases, it is recommended, when dividing the left triangular ligament, to sever the left inferior diaphragmatic vein between two ligatures and to work behind it.

Diaphragm↗
PubMed1983

[Anatomic study of the left inferior diaphragmatic vein (vena phrenica inferior sinistra)].

The anatomy of the left inferior phrenic vein is poorly understood. It can be exposed by transecting the left triangular ligament and clearing the hepatic veins. We inspected twenty embalmed specimens that were injected with Rhodorsil. Generally, the vein has its origin above the diaphragm near the apex of the heart. After traversing the diaphragm, the vein receives two collateral veins, in front of the left triangular ligament. One is located anteriorly and to the right of the vein, the other one is situated behind and to the left. The phrenic vein continues laterally, passing posteriorly to the triangular ligament, or rarely, when the coronary ligamentum is wider than usual, the vein will pass through it as well. In 74% of the case, the vein terminates into the left side of the left hepatic vein. Three dissections appeared to be very interesting: --in one, the vein followed the free margin, then the hepatic margin of the triangular ligament, receiving accessory hepatic veins, --in another, the vein joined the right inferior phrenic vein in front of the inferior vena cava, --in the third one, the vein followed the left inferior phrenic artery, to join the left suprarenal vein, then terminating in the left renal vein.

Adult↗
PubMedDate not supplied

[Lung transplantation].

Lung transplantation began to expand in 1983, after the advent of cyclosporin and the publication of the Toronto lung transplant group study. Single lung transplantation was first performed in patients with interstitial pneumopathy to be extended later to pulmonary emphysema, then to primary or secondary pulmonary arterial hypertension. Double lung transplantation provides patients suffering from chronic lung infection (e.g. cystic fibrosis) with a useful alternative to their ordinary treatment. The experience acquired throughout these years has resulted in wider criteria for patients' inclusion. More than acute rejection, bacterial infections directly condition the immediate prognosis. The frequency and severity of cytomegalovirus lung diseases lead to a discussion on the possibility of prophylactic and curative antiviral therapy. The occurrence of obliterative broncholitis, which reflects chronic lung rejection, jeopardizes the long-term results of transplantation. The functional results of the various types of lung grafting are analysed, and the position of lung transplantation in thoracic surgery is reassessed.

Graft Rejection↗