Biomedical subjects

G Caballero

Publications and source records attributed to G Caballero.

14 recordsLinked to original sources

PubMed1999

[Restructuring and reorganization project in the public health area].

The objective of this project is to produce substantial change as regards the reorganization, reconstruction and normalization of the hospital data to extra hospital data recording system from the Ministry of Health in the Province of Córdoba (Argentina). In order to incorporate socio-demographic factors in the various data forms so asa to produce efficiency upon the politic implemented. To achieve such aim, colwork on the different levels of execution, training the health team with respect to the identification of the population problems, and attempting to change of a demographic basis the current sanitary policies into policies of populations.

Adolescent↗

PubMed1995

Endovascular repair of an ascending aorta-to-left common femoral artery graft with aneurysmal degeneration.

PURPOSE: To report the use of endovascular grafting to repair degenerative aneurysmal changes in an extra-anatomic bypass graft. METHODS: A 14-year-old extra-anatomic ascending aorta-to-left common femoral bypass graft ("ventral aorta") had undergone aneurysmal degeneration, producing symptoms of progressive claudication and local abdominal swelling. The aneurysmal graft dilatation began within the thoracic cavity and extended through the entire extraperitoneal abdominal segment. The option for minimally invasive repair using a customized stent-graft device was offered to the patient as an alternative to standard reoperation. RESULTS: An 8-mm x 42-cm endovascular graft was constructed by polytetrafluoroethylene with 30-mm Palmaz stents sutured to each end. With balloon occlusion of antegrade and retrograde blood flow, the stent-graft was delivered retrograde through an incision in the distal end of the existing bypass graft. The device was successfully positioned and deployed with complete exclusion of the aneurysm. No complications occurred, and the patient's symptoms abated. Follow-up arteriography at 1 months showed a pseudoaneurysm at the distal graft incision site; surgical repair was necessary. At 6 months, angiography demonstrated continued patency of the extra-anatomic bypass graft. CONCLUSIONS: Intraluminal aneurysm exclusion techniques in degenerated extra-anatomic bypass grafts may evolve into a viable therapeutic alternative to complex reoperative surgery.

Aged↗

PubMed1994

The vomeronasal system of the mink, Mustela vison. I. The vomeronasal organ.

The vomeronasal organ (VNO) of the mink is restricted to the area of the Fissura palatina and thus always topographically related to the Ductus incisivus (DI). The VNO and DI have also a functional relation because the vomeronasal duct ends in the incisive duct. On the other hand, as the DI has its mouth in the Papilla incisiva there is a communication between the VNO and the oral cavity. The vomeronasal cartilage, approximately in 1/6 of its length, wraps completely the parenchyma of the VNO whose main structure is the vomeronasal duct, with two different epithelia: sensory receptor in the medial wall, and respiratory in the lateral one. Nevertheless the variations of epithelia belong to the segment of the duct because in its rostral and caudal parts the medial and lateral epithelia are very similar. Branches and tubular PAS positive glands stand out in three points: superior, inferior and medial areas of the vomeronasal duct in which they end. An important number of vessels, mainly veins of different diameter, are located around the duct, while the nervous fibers are close to the medial wall of the duct and very easy to identify in the caudal third of the organ. Two immunohistochemical techniques were used to identify the nerve fibers and the receptor cells.

Animals↗

PubMed1994

[Laparoscopic cholecystectomy. 1203 cases with ultraselective cholangiography].

We present our experience at the University of Chile Hospital with 1203 cases of laparoscopic cholecistectomy between April 1991 and July 1993. In only 36 patients ultraselective cholangiography was performed. In 88 cases an endoscopic cholangiography was performed prior to surgery because of suspicion of choledocolithiasis. In 31 of them choledocolithiasis was demonstrated, and was successfully treated by papilotomy in 30 of them. In 5.8% of cases coversion to open surgery was necessary: 1.4% in chronic cholecystitis, 13% in acute cholecystitis and 39% in cases with fibrosis and esclerosis of gallbladder with or without biliary digestive fistula. The intraoperative cholangiography has been advocated as a manner to prevent the common duct injury. In spite of the small number of cases operated on with cholangiography, we haven't seen serious injuries of biliary tract; a carefully disection, as far away as possible of the common duct, is the best way to prevent iatrogenic lesions. Postoperative morbidity was present in 15 cases, 8 of them required a new operation. Two patients died.

Adolescent↗

PubMed1985

Long-term ambulatory treatment of metastatic colorectal adenocarcinoma by continuous intravenous infusion of 5-fluorouracil.

To delineate the efficacy of continuous intravenous 5-fluorouracil (5-FU) infusion therapy for advanced colorectal adenocarcinoma, a study of 36 patients with measurable metastatic disease was conducted. Patients received a daily intravenous infusion of 300 mg/m2 5-FU over a 24-h period utilizing portable infusion devices and central venous catheters. In a population characterized by substantial pretreatment exposure to radiotherapy, chemotherapy, and other indicators of poor prognosis, 13/36 (36%) patients achieved an objective response. An additional 10/36 (28%) patients manifested stable disease (no change) and experienced survival comparable to that of patients with objective response. Toxicity was minimal; patients were able to continue 5-FU infusions 95% of the total time on protocol. There were no adverse hematologic effects or catheter complications. Because previously untreated patients benefited more frequently (positive response, 50%), continuous intravenous infusion should be evaluated further as a primary modality option when 5-fluorouracil antitumor chemotherapy is contemplated.

Adenocarcinoma↗

PubMed1985