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Biomedical subjects

R Inderbitzi

Publications and source records attributed to R Inderbitzi.

At least 37 records · Page 2Linked to original sources

[Does administration of fibrin glue prevent development of lymphoceles after radical lymphadenectomy?].

Surgical approaches to the groin and axilla, almost radical lymph node dissections (RLND) are followed frequently by lymphocysts. In a prospective randomized study of 30 inguinal or axillary RLND we used at half of the cases 1 ml of the two-component fibrin glue (Tissucol), applied as a spray to seal the wound at the end of the operation. At 27 patients not only a prophylactic RLND but a selective hyperthermic cytostatic perfusion of the extremity was performed because of a locally advanced malignant tumor. There was no difference between the two groups of patients in age, diagnosis, surgical technique, and follow-up. In two cases of the fibrin glue (FG)-group and in 4 cases of the control group a second intervention because of a local wound healing problem had to be performed. The mean amount of postoperative drainage fluid was 1065 +/- 822 ml at the FG-group and 1332 +/- 1093 ml at the control group. Also postoperative drainage time (9 vs. 12 days) and postoperative hospital stay (18 vs. 22 days) were shorter at the FG-group, however, without statistical significance. 11 of 14 patients of the FG-group and 10 of 14 patients of the control group had normal scars after lymphadenectomy without signs of lymphocysts at the clinical follow-up. At our high risk patients (very high amount of postoperative drainage fluid in comparison to other series) prophylactic fibrin glue sealing after RLND could not prevent lymphocysts and lymphatic fistulae.

Adult↗

[Thoracoscopic treatment of recurrent or persistent spontaneous pneumothorax].

The video shows an endoscopic modification of the established conventional surgical therapy of recurrent or persistent spontaneous pneumothorax: The indications and endoscopic techniques of parietal pleurectomy, ligature of leaking bullae and wedge resection are demonstrated. Our first experience on 50 patients indicates, that minimal postoperative pain and a relatively short hospital stay (mean 3.6 days postop.) are the advantages of minimal invasive techniques also in thoracic surgery. Long-term results are however still lacking.

Humans↗

[Thoracoscopic interventions].

The technique of minimal invasive surgery has successfully been introduced into the area of thoracic surgery. Surgery of the intrathoracic organs may now be performed without compromise of respiratory mechanics, thus allowing the operative treatment of an ever widening range of pathological conditions. An analysis of our experience (287 thoracoscopic interventions in the last three years) reveals that the diverse procedures performed on the pleura (pleurectomy and pleurodesis), on the lung (wedge resection, fistula closure and ligature of parenchymatous leaks) and on other defined anatomical structures such as the sympathetic nerves or the thoracic duct, are effective in the therapy of intrathoracic disease. The most important pathological conditions which may be treated by thoracoscopy are listed. The range of complications and their causes, which developed in 8% of all procedures, are discussed. The current limitations of this method are defined in the context of the situations where thoracoscopy was discontinued (9 times), a thoracotomy performed (17 times) or a further procedure became necessary (14 times). Current developments and innovations are summarized by a short review of the literature.

Humans↗

[Thoracoscopic lobectomy in the animal model].

To evaluate the possibility of a pure thoracoscopic lobectomy by preparation and selective division of hilar structures we performed left cranial lobectomies in 5 Göttingen mini-pigs. The vessels and the main bronchus were isolated and divided by an Endo-GIA stapler. As an alternative technique we used clips or endoscopic ligation. Inside the thoracic cavity the resected lobes were divided into 2 or 3 parts by the Endo-GIA. They could be extracted without destroying the tissue therefore making macroscopic examination possible. The intraoperative blood loss was minimal and all the pigs survived the operation. Two pigs were sacrificed initially, the remaining three one month later. These three showed no evidence of pleural fistula or atelectasis in remaining lung tissue either macroscopically or histologically. It appears that thoracoscopic selective lobectomy is technically possible at least in pig studies. Further studies will show whether thoracoscopic lobectomy in patient with malignancy is as effective as open radical thoracotomy techniques and if endoscopic mediastinal division is possible.

Animals↗

[A villous adenoma of the duodenum].

X-ray contrast examination of the upper gastrointestinal tract in a 73-year-old man with nocturnal heartburn demonstrated a constant filling defect in the duodenum. Gastroduodenoscopy revealed a 4 x 3 cm polypoid mucosal change of the duodenal wall adjacent to the pancreas. Histological examination of an endoscopically obtained biopsy showed a tubulovillous adenoma with severe mucosal dysplasia. The affected segment of duodenum was resected. Serial sections showed extensive focal carcinomatous degeneration of an adenoma. The postoperative course was unremarkable. At endoscopy 30 months later, when the patient was free of any symptoms, there was no macroscopic or microscopic evidence of recurrence. Experience so far indicates that villous adenoma of the duodenum should be treated by radical surgery.

Adenoma↗

[Pleurodesis technique in malignant pleural effusion].

Malignancy is the leading cause of exudative pleural effusion in patients over 60. Several techniques for palliative treatment of malignant pleural effusions (MPE) are recommended; in particular, sclerosing agents have been instilled into the pleural cavity. In up to 30%, recurrence of MPE cannot be prevented. In recent years excellent results (recurrence rate less than 10%) have been reported using the technique of thoracoscopic talkage. After a review of the most frequent techniques of pleurodesis, a treatment strategy, mentioning the indications for the thoracoscopic procedure, is presented stressing the following guidelines: after complete thoracocentesis the patient's respiratory symptoms should decrease significantly and the compressed lung must be expanded clinically and radiologically after drainage. For patients fulfilling these conditions thoracoscopic pleurodesis is an effective initial treatment. It seems to be a safe procedure with minor side effects even for patients in a reduced general condition.

Antineoplastic Agents↗

The fate of bilateral lower limb amputees in end-stage vascular disease.

Sixty-six patients with end-stage peripheral vascular disease who had undergone bilateral major amputation of the lower extremities in our institution during the 10-year period January 1980-December 1989 were reviewed. There were 46 males and 20 females with an age range from 34 to 91 years (mean 67.7 years). A 98.5% follow-up was achieved. Of these patients 25% underwent their second amputation in the first, 50% within the second and 75% within the third postoperative year, notwithstanding the fact that prior attempts at revascularisation had been performed in 62% of all patients. The 30-day hospital mortality was 4.5%. The initial level of amputation was metatarsal in 14.4%, below knee in 66.6%, through knee in 9.9% and above knee in 9.1%. Out of a total of 132 stumps 89 healed by primary intention. Following secondary revisions and amputations the final level of amputation was metatarsal in 7%, below knee in 49%, through knee in 14% and above knee in 30%. Survival rates were 62% after 2 years, 31% after 5 years, and 14% after 8 years. By this time all diabetics had died, while 33% of non-diabetics were still alive (p greater than 0.02). Age, sex and amputation level had no bearing upon survival rate. Forty-three patients (65.1%) were ambulatory after their first amputation, but following contralateral amputation barely more than half (23 patients) were able to walk. In the presence of bilateral stage IV disease it is highly important to rehabilitate the patient immediately following unilateral amputation before considering amputation of the contralateral limb, otherwise the patient will not become ambulatory.

Adult↗

Pain relief and respiratory mechanics during continuous intrapleural bupivacaine administration after thoracotomy.

Continuous intrapleural bupivacaine administration was assessed in a randomized double-blind manner with respect to its analgesic effect and its impact on breathing after thoracotomy. The pleural cavity was infused continuously for 48 hours in 24 patients following thoracotomy for pulmonary resection. 12 patients received 10 ml/h of bupivacaine hydrochloride 0.5% solution, and 12 patients 10 ml/h NaCl 0.9% solution. There were no differences in the patients' characteristics, extent of surgery, mode and duration of general anaesthesia. There were no complications related either to the catheter or to bupivacaine. The amount of postoperative opioid, given on request, was used to assess the effect of bupivacaine administration on pain relief. Post-thoracotomy breathing was assessed by measuring the forced vital capacity (VC) prior to and after physiotherapy. The VC values measured 24 h, 36 h and 48 h after the operation were similar in both groups of patients with or without bupivacaine administration (p greater than 0.05). Patients given bupivacaine required significantly less opioid analgesia than those who received NaCl 0.9% at 24 h (p less than 0.001), 36 h (p less than 0.001) and 48 h (p less than 0.01) after the operation. Continuous intrapleural bupivacaine analgesia through a paravertebral catheter positioned in the paravertebral groove is safe and provides efficient pain relief after thoracotomy.

Aged↗

The surgical treatment of spontaneous pneumothorax by video-thoracoscopy.

Since March 1991, 66 patients with spontaneous pneumothorax were treated thoracoscopically employing the principles of minimally invasive surgery. Of these cases, 14 involved a first occurrence, 18 had a pneumothorax longer than 7 days, and 34 were recurrences; causative lung disease was determined in 25 patients. The blebs and bullae were ligated with chromic catgut Roeder loop or resected with the Endo-GIA stapler. If pathological changes to the lung consistent with Vanderschueren's stage IV were found (n = 36), the treatment was extended to include a parietal pleurectomy. No complications requiring therapy were encountered, the average postoperative hospital stay was 3.2 days. During an average observation period of 10 months (1-27) the recurrence rate was 4.5%. Thoracoscopic therapy proved to be a simple and safe method for all forms of spontaneous pneumothorax.

Adolescent↗

Acute mesenteric ischaemia.

To identify any differences in presentation among the four types of acute mesenteric ischaemia, and to correlate time between presentation and treatment with outcome, we retrospectively analysed 100 cases of acute mesenteric ischaemia at a University hospital diagnosed by radiography (n = 21), at laparotomy (n = 61), or at necropsy (n = 18). A total of 68 patients died. Mortality was 50% when the aetiology was embolic occlusion of the superior mesenteric artery and 95% when the occlusion was thrombotic; 67% when the disease was "non"-occlusive; and 30% in cases of splanchnic vein thrombosis. We conclude that early diagnosis is critical for successful management of acute mesenteric ischaemia, but outcome is also influenced by the aetiology.

Acute Disease↗

[Case report: endoscopic resection of a 5 cm intrathoracic lipoma].

Technical possibilities of operative thoracoscopy are demonstrated on the occasion of the presentation of an endoscopic resection of a benign intrathoracic tumour. Thoracic video-endoscopy is definitely a useful constituent of the treatment of defined pleural or pulmonary processes, since it can be used in addition to biopsy (which serves to assure the correct diagnosis) without rendering the diagnostic procedure more complicated to any significant extent.

Female↗

[Clinical impact of rib fractures in single and multiple trauma].

In a retrospective study we evaluated the data regarding 126 patients (96 male/30 female) hospitalized with rib fractures between 1986 and 1989. Fifty percent of the subjects had been in a traffic accident. Eighty-five percent of the patients had 2-7 broken ribs. Sixty-two patients suffered from multiple injuries, 40% were men aged less than 40 years. Fifty-six patients were treated by pleural drainage either for hemato- and/or pneumothorax or to prevent intrapleural tension during surgical intervention under endotracheal anesthesia. Thirty-two patients underwent mechanical ventilation for between 1 and 52 days (mean 10 days). In five cases a flail chest was stabilized by ribosteosynthesis to avoid prolonged artificial ventilation. Pain relief by continuous peridural Carbostesin (bupivacaine) administration was given to 31 patients. There was a positive correlation between the incidence of pneumo- and hematothorax and the number of broken ribs. A significant association was found between multiple-injured patients died in hospital; six of them had multiple injuries. The recovery of 44 patients was interrupted by complications, predominantly of pulmonary origin (68%). The pattern and severity of concomitant injuries and interference of complications influenced the length of the hospital stay; pulmonary complications doubled it.

Adolescent↗

[Surgical thoracoscopy--indications and technique. Early results in spontaneous pneumothorax].

The use of minimally invasive techniques in the thoracic cavity allows for the application of operative techniques through endoscopic ways, avoiding the functional burdening of a thoracotomy. Indications of operative thoracoscopy are mentioned. Endoscopic surgical techniques are described. For example, the therapy of spontaneous pneumothorax can be carried out in its entirety by endoscopic leak ligature, wedge resection of the lung and parietal pleurectomy. Three of the 49 patients with spontaneous pneumothorax suffered from an early recurrence after thoracoscopic treatment (6.1%). Long-term results are still outstanding. The final merit of the method cannot yet be set.

Algorithms↗

[Five years experience with infra-inguinal arterial reconstruction: a comparison of venous with PTFE bypass].

Since January 1983 one surgeon of our team has performed 200 infrainguinal arterial reconstructions. Our patients had a mean age of 72 years and suffered from multiple concomitant diseases (coronary heart disease 35%, cerebro-vascular insufficiency 15%, hypertension 49% and diabetes mellitus 34%). The indication for arterial reconstruction was a chronic critical ischemia in every case. 154 autologous veins and 46 PTFE prosthesis had to be implanted. The former consisted in 64% in a femoropopliteal and in 35% femorodistal bypass graft; respective values of the latter group were 80% and 20%. The cumulative survival rates of two collectives were nearly identical. More than 50% of our patients died in the 4 years observation period. The life table patency rates differed statistically significant (p less than 0.001). The cumulative 5 year patency amounted to 85% in case of a vein graft and to 43% if a PTFE prosthesis was inserted. Extremely poor results were achieved in case of a PTFE prosthesis with a distal anastomosis to a single crural artery; just one out of 6 procedures was successful after two years.

Adult↗

Photodynamic therapy with chlorins for diffuse malignant mesothelioma: initial clinical results.

Four patients underwent intraoperative photodynamic therapy after surgery with meso-tetra-(hydroxyphenyl)-chlorin (mTHPC-PDT) for diffuse malignant mesothelioma. Preliminary procedures were performed in two patients in order to establish the efficacy of mTHPC-PDT and to optimise its tumoricidal effect. The tumoricidal effect was related to the mTHPC dose, light dose and the time interval between sensitation and activation. 0.3 mg kg-1 mTHPC activated after 48 h with 10 Joules cm-2 of non-thermal laser light at 650 nm resulted in a 10 mm deep tumour infarction, due to tumour vessel necrosis and thrombosis. The mTHPC tissue concentration was up to 14 times higher in the tumour than in normal tissues. Skin photosensitivity was mild, dose dependent and occurred 3 to 10 days after administration of mTHPC. According to the results obtained, intraoperative mTHPC-PDT was performed following pleuropneumonectomy in two, pleurectomy and lobectomy in one and pleurectomy in one patient. Ten Joules cm-2 were delivered to the diaphragm and the costophrenic sulcus and 5 Joules cm-2 to the remaining thoracic cavity. The postoperative course was marked by loss of appetite, fluid retention, hypoproteinemia and severe chest pain. One patient succumbed from aspiration pneumonia. The remaining patients developed no neural or vascular alterations and no bronchial stump insufficiency during follow-up. mTHPC-PDT following surgical tumour resection deserves further evaluation in good risk patients with diffuse malignant mesothelioma.

Combined Modality Therapy↗

[Significance of rib fractures in simple and multiple trauma].

In a retrospect study we evaluated the clinical impact of traumatic rib fractures. Our series included 96 patients treated between 1986 and 1988. Haemato- and/or pneumothorax corresponded closely to the number of fractured ribs. There was a highly significant association (p less than 0.001) between the number of fractured ribs and polytrauma. The leading cause of injuries was a traffic accident.

Adult↗

[Trans-sternal thymectomy in myasthenia gravis].

Between 1986 and 1989 27 patients with myasthenia gravis underwent radical thymectomy: 24 patients without and two patients with thymoma through a trans-sternal incision, another with thymomatous myasthenia through a left-sided thoracotomy. The patients were staged according to the modified Ossermann classification. The results were evaluated prospectively according to the Disability Status Scale of Oosterhuis. During a mean follow up of 22.4 months, 21 patients (77%) benefited from the operation with complete remission achieved in 9 (33%) and significant improvement noted in 12 (44%). There were no operative deaths and no hospital morbidity. The mean operation time was 88 minutes, the mean postoperative hospital stay 10.5 days. These results support the recommendation for radical trans-sternal thymectomy in the treatment of patients with myasthenia gravis as a safe procedure.

Adolescent↗