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B Jon

Publications and source records attributed to B Jon.

10 recordsLinked to original sources
PubMed1998

Dissection of the infrarenal aorta treated by stent graft placement.

Aortic dissection is primarily localized in the thoracic aorta. Dissection of the abdominal aorta is exceedingly rare, especially in the absence of a blunt abdominal trauma. Two cases of a primarily infrarenal aortic dissection were diagnosed by US, CT and angiography. The patients were treated by stent graft placement. The stent grafts were introduced via a femoral arteriotomy through the introducer sheath and were placed so that they occluded entry and reentry of aortic dissection. The stent graft placement caused total obliteration of a false channel of the dissection immediately after endoprosthesis deployment. The patients were followed-up by CT and angiography at 16 and 3 months after surgery without complication.

Aged↗
PubMed1997

Juxtarenal aortic aneurysm associated with a horseshoe kidney. Transfemoral endoluminal repair.

Horseshoe kidney complicates aortic aneurysm surgery in 1 of 200 cases. A patient with asymptomatic juxtarenal aortic aneurysm associated with a horseshoe kidney was successfully treated by stent graft placement. The kidney was supplied by 4 renal arteries. The proximal uncovered part of the stent graft was anchored across the origin of 1 renal artery. Another renal artery, arising from the aneurysmal sac, was occluded by the covered part of the stent graft. A kidney infarction developed postoperatively, which did not affect renal function or blood pressure. The patient was discharged from the hospital in good condition. Follow-up computed tomography and angiography confirmed a satisfactory result of the endovascular treatment.

Aged↗
PubMed1997

Juxtarenal aortic aneurysm: endoluminal transfemoral repair?

Endoluminal transfemoral repair of an abdominal aortic aneurysm by a stent graft placement requires a segment of the nondilated infrarenal aorta of at least 15 mm long for safe stent graft attachment. The possibility of endoluminal treatment of a juxtarenal abdominal aortic aneurysm with partially covered spiral Z stent was assessed in experiment and in three clinical cases. In the experiment, the noncovered spiral Z stent was placed into the abdominal aorta, across the origins of renal arteries and mesenteric arteries, in six dogs. In the clinical cases, a partially covered stent graft was attached in 3 patients with the juxtarenal abdominal aortic aneurysm (of the group of 12 patients with abdominal aortic aneurysm). The stent grafts were attached with proximal uncovered parts across the origins of the renal arteries. In experiment, the renal artery occlusions or stenoses were not observed 36 months after stent placement, and in clinic, 3 patients with the juxtarenal aortic aneurysm were successfully treated by stent graft placement. There were no signs of flow impairment into the renal arteries 14 months after stent graft implantation. This approach can possibly expand the indications for endoluminal grafting in the treatment of juxtarenal aortic aneurysms in patients who are at high risk for surgery.

Aged↗
PubMed1997

[Endovascular treatment of abdominal aortic aneurysms. Morphology of aneurysms as one of the deciding indicating factors].

Endovascular treatment of aneurysms of the abdominal aorta is based on intravascular bridging of the aneurysm using of an endovascular prosthesis. The prosthesis must be safely anchored above and below the sac of the aneurysm in the non-dilated artery. Therefore the indication of endovascular treatment depends on the morphology of the aneurysm. The objective of the work was to analyse the morphology of the aneurysm with regard to the possibility of endovascular treatment. The morphology of the aneurysm was evaluated with regard to the angiographic examination and examination by computed tomography. The following parameters were investigated: diameter and length of the proximal and distal neck, diameter of the sac in two planes, diameter and tortousity of the iliac arteries, tortousity of the infrarenal aorta. A total of 70 patients with aneurysms of the abdominal aorta were examined. The patients were divided into three groups according to the morphology of the aneurysm. I. infrarenal aneurysms not affecting common iliac artery (n = 20) 28.5%, II. infrarenal aneurysms affecting common iliac artery (n = 38) 54.2%, III. juxtarenal aneurysms regardless of the affection of common iliac arteries (n = 12) 17.1%. Of the total of 70 examined patients 24 (34.2%) with infrarenal aneurysm and 6 (8.57%) with juxtarenal aneurysm were suitable for endovascular treatment.

Angiography, Digital Subtraction↗
PubMed1996

[Polyester-covered spiral Z stent. Initial clinical experience with endovascular treatment of aortic aneurysms].

The authors present their initial clinical experience with endovascular treatment of an aneurysm of the abdominal aorta using of a polyester covered spiral Z stent. Since May 1995 they treated by the endoluminal route 13 patients with aneurysms of the abdominal aorta and 1 patient with thoracic aneurysm. In patients with a subrenal aneurysm (n = 10) the stent graft was anchored below renal arteries origins. In patients with a juxtarenal aneurysm (n = 3) the stent graft was anchored across the renal arteries origins. All patients were followed up by angiography, computed tomography and ultrasonography. In one patient with a subrenal aneurysm dislocation of the stent graft during implantation occurred. In the remaining patients it proved possible to exclude the aneurysm successfully. One patient with an juxtarenal aneurysm died 6 days after surgery. The cause of death was not associated with the aneurysm or surgery. In patients with juxtarenal aneurysms the authors did not observe changes of renal functions or occlusion of the renal artery in the course of 12 months.

Aged↗
PubMed1994

[Treatment of acute cholecystitis with emergent and early cholecystectomy].

Views regarding optimal treatment of acute cholecystitis still remain controversial. There is general agreement only when advanced inflammation threatens the patient's life and urgent operation is a necessity. In other forms of inflammation it is possible to make an early cholecystectomy or proceed by conservative methods and make the operation later as a planned operation. A number of comparative investigations revealed that in both procedures the frequency of postoperative complications and the lethality are roughly equal. The advantages of early cholecystectomy comprise: a shorter time of treatment, lower costs of treatment, a shorter period of hospitalization, a shorter period of work incapacity, and last not least, also a favourable psychological effect when the unpleasant expectation of the planned operation is eliminated. In the authors' department it was confirmed in a six-year study that early surgery is justified in acute cholecystitis. Therefore the authors proceed with this trend. The results of their work, consistent with the results of others, justify this view.

Acute Disease↗
PubMed1994

[Splanchnicectomy in pancreatic diseases].

In the foreground of the clinical picture of chronic pancreatitis and carcinoma of the pancreas is pain which frequently is difficult to control by drugs. The authors evaluate in a group of 18 patients with severe epigastric pain associated with carcinoma and in chronic pancreatitis the analgesic effect of splanchnicectomy. In 29.4% of operated patients after surgery pain disappeared completely, 47% of the patients reported substantial relief after surgery. Only in 17.7% of the patients the operation produced no effect. With regard to their own experience the authors can recommend splanchnicectomy in pain associated with diseases of the pancreas which cannot be influenced by other means.

Adult↗
PubMed1992

The changing pattern in peptic ulcer surgery.

The authors analyse the methods of treatment for the peptic ulcer disease (PUD) in two 5-year periods (group A 1979-1983, group B 1985-1989). From these groups patients with perforated gastroduodenal ulcer were excluded. In the first period 206 operations were carried out using nearly exclusively classical partial gastrectomies of both types (94 per cent). The second period involves 94 operations, where the most frequent type of operations was the proximal gastric vagotomy (40.4 per cent), and vagotomy with anthrectomy in the Roux-en-Y modification (26.6 per cent). The number of operations for a complicated PUD has increased from 43.2 per cent to 53.2 per cent, the ratio between the duodenal and gastric ulcer has changed from 3:1 to 2:1. The mortality was 5.3 and 4.7 per cent respectively, the morbidity 14.5 and 13.8 per cent respectively. The authors confirmed their accordance with the world-wide trend of diminution of the proportion of surgically treated PUD and a shift in the pattern of surgical methods towards the non-resective and more physiological procedures.

Female↗