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At least 469 records · Page 26Linked to original sources
PubMed2004

Cardiovascular changes during drainage of pericardial effusion by thoracoscopy.

BACKGROUND: Cardiovascular changes during drainage of pericardial effusion are not well understood, and most studies are of systemic effects and not of right ventricular performance. Thoracoscopy is not widely used to drain pericardial effusions because of haemodynamic changes in relation to the use of single lung ventilation. PATIENTS AND METHODS: We studied 16 patients undergoing partial pericardiectomy for pericardial effusion, using videothoracoscopy with a low-pressure pneumothorax (6 mm Hg). Cardiac output was measured by thermodilution with the patient anaesthetized in the supine position before the procedure; in the right lateral position after a low-pressure pneumothorax had been established; and after drainage of the pericardial effusion. RESULTS: Before the procedure, cardiac output was low and central venous pressure and pulmonary artery occlusion pressure were increased. Systemic vascular resistance and arterial blood pressure were within normal limits. Cardiac filling pressure and pulmonary arterial pressure increased during the pneumothorax. After the drainage cardiac index increased and systemic and pulmonary vascular resistances were reduced. CONCLUSIONS: Pericardial effusion reduces right ventricular distensibility, right and left systolic ventricular function, and cardiac output. Anaesthesia with mechanical ventilation and a low-pressure pneumothorax do not affect the circulation greatly. Drainage of the pericardial effusion allows cardiac distensibility to increase and cardiac performance changes to allow increased ejection.

Adolescent↗
PubMed2004

Mediastinal neurogenic tumors and video-assisted thoracoscopy: always the right choice?

Neurogenic mediastinal tumors in adults are generally benign lesions and for this reason are ideal candidates for resection by video-assisted thoracoscopy (VAT). Usual contraindications to VAT are the dimension of the tumor (greater than 6 cm), its position (apex, posterior costodiaphragmatic angle), and/or the presence of intraspinal growth (the so-called "dumbbell tumors"). This study reviewed a single-institution 10-year experience approaching mediastinal neurogenic tumors routinely by VAT, even in cases of the above mentioned contraindications. From January 1992 to December 2002, 15 consecutive mediastinal neurogenic tumors were operated by VAT (11 females, mean age 43 years, range 16-67). Mean operating time was 99 minutes (range 60-180). No conversion thoracotomy was required. The 2 cases of "dumbbell tumor" in this series were treated by laminectomy followed by VAT. Two patients had a Claude-Bernard-Horner syndrome after removal of lesion at the level of T1-T2. Mean postoperative stay was 5.5 days. Histologic diagnosis was schwannoma in 12 cases (Antoni type A in 7 cases, type B in 4 cases, mixed type in 1 case) and neurofibroma in 3 cases. Results from this 10-year experience confirmed that VAT can be the standard approach for neurogenic tumors in adults without negative effect on radicality of resection and safety of the procedure.

Adolescent↗
PubMed2004

Pulmonary vein isolation by robotic-enhanced thoracoscopy for symptomatic paroxysmal atrial fibrillation.

BACKGROUND: Pulmonary vein isolation (PVI) has been shown to be effective treatment of patients with symptomatic paroxysmal atrial fibrillation (PAF). The percutaneous approach is currently the technique of choice. Unfortunately, this procedure has limitations and complications that lead to fluctuating success rates. We explored an alternative technique of robotic-enhanced, closed-chest PVI with an endoscopic microwave-based catheter. METHODS: Seven symptomatic PAF patients were included in the study. The pulmonary veins were isolated through right (only) robotic-enhanced thoracoscopy on the beating heart. RESULTS: Six patients underwent successful endoscopic PVI. In 1 patient the operation was converted into small right thoracotomy. Operative assessment of the ablation line showed a successful electric block in every patient. Three months after the procedure, the first 5 patients were in permanent sinus rhythm. The 2 other patients had AF but had less frequent and less symptomatic episodes compared with the preoperative situation. CONCLUSIONS: On the basis of this preliminary experience, we believe that in the near future endoscopic right-chest robotic-enhanced PVI on the beating heart may become a valid option in the treatment of symptomatic PAF patients. This procedure allows for more-reproducible ablation lines and may avoid many of the pitfalls and drawbacks of the percutaneous approach. Therefore this technique deserves larger prospective evaluation in the treatment of AF.

Atrial Fibrillation↗
PubMed2002

Elevated end-tidal carbon dioxide during thoracoscopy.

We report a case of a patient with right pleural effusion who, during video-assisted thoracoscopy for biopsy and diagnosis, developed a sudden rise in end-tidal carbon dioxide (EtCO2) after a small tear of the lung tissue. The purpose of this case report is to highlight this rare complication and to discuss possible alternative differential diagnosis.

Blood Gas Monitoring, Transcutaneous↗
PubMed2003

Epicardial lead implantation techniques for biventricular pacing via left lateral mini-thoracotomy, video-assisted thoracoscopy, and robotic approach.

PURPOSE: For optimal biventricular pacing, the left ventricular (LV) lead has been found to be best placed in the area where optimal concordance is achieved between the LV pacing site and the site of the most delayed LV wall. For anatomical or technical reasons, the placement of the LV lead via the coronary sinus at the intended target area of the LV is often not possible. An option for avoiding these drawbacks is the surgical implantation of the LV lead under direct vision. This report describes 3 epicardial lead implantation techniques that are less invasive. METHODS: In 80 patients with advanced heart failure and left bundle branch block, epicardial LV leads for biventricular pacing were implanted with 3 different methods: (1) left lateral mini-thoracotomy; (2) a video-assisted thoracoscopy approach using lead implantation tools; and (3) a robotically enhanced telemanipulation system. Video films are provided for all 3 techniques in The Heart Surgery Forum online. RESULTS: Independent of the surgical techniques, the intended lead location on the LV was achieved in all patients. Acute and 3-month LV lead thresholds were satisfactory in 79 patients (99%). Two lead displacements were observed. One thoracotomy was carried out after thoracoscopic lead placement because the patient developed an early exit block. Five patients who underwent an operation with the robot needed a conversion to thoracotomy because of technical failure of the robot (2 patients) or massive pleural adhesions (3 patients). There were no severe adverse events related to any technique. Three patients died in the hospital from the progression of end-stage heart failure. CONCLUSION: Epicardial lead implantation for biventricular pacing is feasible with all 3 surgical techniques. Each method allows optimal lead implantation under direct vision and therefore reduces the incidence of nonresponders resulting from suboptimal lead placement.

Aged↗
PubMed2005

[Hand-assisted video-thoracoscopy for resection of esophageal cancer].

OBJECTIVE: To explore the feasibility and advantages of hand-assisted video-thoracoscopy for resection of esophageal cancer. METHODS: Forty-five patients with esophageal cancer received hand-assisted video-thoracoscopic esophagectomy (group I). 45 patients underwent esophagectomy through routine open thoracotomy during the same period as control (group II). The data of lymph node resection, operating time and blood loss were compared. RESULTS: There were no operative mortality in 2 groups. In group I, the number of dissected paraesophageal lymph nodes, cardiac lymph nodes and left gastric nodes were (3.6 +/- 1.0), (1.3 +/- 1.1) and (4.3 +/- 1.4), respectively. While for group II the dissected lymph nodes were (3.3 +/- 1.5), (1.6 +/- 1.1) and (4.7 +/- 2.1), respectively. There was no significant difference between two groups (P > 0.05). However, the number of dissected mediastinal nodes was (6.6 +/- 3.7) for group I and (3.8 +/- 2.5) for group II (chi(2) = 2.95, P < 0.05). The mean operating time was (29 +/- 5) minutes for group I and (60 +/- 6) minutes for group II. The mean blood loss was (93 +/- 19) ml for group I and (145 +/- 35) ml for group II. The mean chest tube drainage was (201 +/- 45) ml for group I and (295 +/- 57) ml for group II in the first postoperative day. The difference in above parameters between 2 groups was significant (chi(2) = 18.69, 6.13, 6.08, P < 0.001). CONCLUSIONS: It is suggested that hand-assisted video-thoracoscopic esophagectomy is a safer, minimal invasive procedure in the resection of esophagus carcinoma.

Adult↗
PubMed1992

[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↗
PubMed2006

[Video-thoracoscopy in the treatment of patients with penetrating wound of the thorax].

Thoracoscopic surgical procedures were used in the treatment of 79 patients with penetrating wound of the thorax complicated by hemothorax. Small hemothorax was diagnosed in 72.1% patients; 56.1% had injuries of thoracic organs, 26.3% -- injuries of diaphragm. Thoracoscopic hemostasis and correction of intrathoracic injuries were performed in 84,6% patients. Conversion to video-assisted minimally-invasive thoracotomy (because of injuries of the diaphragm as a rule) occurred in 15,8% patients, conversion to typical thoracotomy -- in 3.5%. In medium hemothorax (16.4% patients) injuries of thoracic organs and anatomic structures were diagnosed in 76.9% cases. Hemostasis and correction of intrathoracic injuries through thoracoscopic approach were performed in 43.8% patients, conversion to typical thoracotomy was necessary in 7% cases. Big hemothorax was diagnosed in 11.4% patients, 55.6% of them had injuries of thoracic organs and anatomic structures. Complete thoracoscopic procedure was performed in 44.4% cases; 33.3 patients required conversion to thoracotomy. Thoracoscopy is an effective method of surgical treatment of thoracic injuries in patients who don't require urgent thoracotomy. This procedure permits repair of intrathoracic injuries in 73.4% cases. Postoperative complications were seen in 15% cases, postoperative lethality was 1.4%.

Adult↗
PubMed2006

[The first experience with video-assisted thoracoscopy used during operations in children and adolescents for pulmonary tuberculosis].

The paper first describes the experience in performing operations in 34 children and adolescents with different forms of tuberculosis of the lung and intrathoracic lymph nodes via mini-invasive access (a 4-6-cm skin cut), by applying video-assisted thoracoscopy. Practice has provided evidence that lung resections of any scope can be made in children and adolescents with pulmonary tuberculosis and nonspecific lung diseases during video-assisted thoracoscopic operations. The latter have a lot of advantages over the traditional thoracic operations; these included decreases in the duration of operations, in intraoperative and early postoperative blood and plasma losses and the duration of inpatient treatment of pulmonary tuberculosis in children and adolescents, and earlier activation.

Adolescent↗
PubMed1990

[CEA as a tumor marker on the cell surface and in the exudate. Comparison in thoracoscopy examined pleural effusions].

A prospective comparison was conducted in 43 patients to assess comparatively the ranking of cytology and CEA determined in the pleural effusions and by immunocytology on the cell surface (the latter two compared with each other) and then juxtaposed with the information obtained by histology via thoracoscopy. It was found that the yield achieved by cytology was comparable with that obtained by immunocytology. The maximum sensitivity was established with the adenocarcinoma.

Biomarkers, Tumor↗
PubMed1989

The laser in thoracoscopy.

The various possibilities of laser application in thoracoscopy are explained, such as closure of defects after lung biopsy or in pneumothorax, cauterisation of emphysematous bullae, etc.

Biopsy↗
PubMed1994

[The status of surgical thoracoscopy in thoracic surgery].

Video-assisted thoracoscopic surgery is viewed as a sparing and safe alternative to thoracotomy for a wide spectrum of benign thoracic diseases. However the loss of palpation as well as the insufficiency of complete mediastinal lymphadenectomy are responsible for the uncertainty of the new method concerning curative oncological therapy. During the last two years we could replace thoracotomy by operative thoracoscopy in nearly all cases of recurrent pneumothorax and recurring pleural effusion. In a series of 447 endoscopic operations in 350 patients following distinct indications and strong prerequisites in terms of operating team and infrastructure of our department we could establish a high standard for this new operating method. The good postoperative results of this large series of thoracoscopic operations indicate the high rank of this new technique in thoracic surgery. Recurrence rates of 1.5% for pneumothorax surgery and 0 for pleurectomy for malignant pleural effusion can be compared to those in open thoracic surgery. Six weeks after the operation the postoperative lung function was normal in 80% of an initial group of patients.

Humans↗
PubMedDate not supplied

Development of a basic instrumentation for operative thoracoscopy.

The basic instrumentation for operative thoracoscopy presented here comprises mechanical instruments used for dissection as well as HF instruments and flexible trocars. Their basic shapes and dimensions are adapted to the anatomy of the thorax. Separating the mechanical and optical elements permits a high degree of precision and safety in operations ranging from the thoracic wall, the mediastinum and the oesophagus to the lung.

Equipment Design↗
PubMed1993

Use of lasers in thoracoscopy.

The ND:YAG surgical laser is a safe and effective method for resection of pulmonary nodules using VATS. It may be used as the primary resecting tool or as an adjunct to endoscopic stapling techniques to provide optimal pulmonary tissue preservation, and to avoid injury to the lung from inappropriate stapler applications. Thoracoscopic laser resection is particularly suited for deep lesions and for surface nodules where staplers are inadequate. Laser ablation of bullous disease using thoracoscopy offers a minimally invasive method of treating symptomatic patients with complications from dominant bullae.

Biopsy↗
PubMed1995

[Invasive diagnosis of mediastinal space-occupying lesions. On differential indications between cervical mediastinoscopy, parasternal mediastinotomy and video thoracoscopy].

The role of video-thoracoscopy (VT) as an invasive diagnostic procedure for mediastinal lesions not reachable by cervical mediastinoscopy (CM) has still to be defined, particularly with regard to parasternal mediastinotomy (PMT). Diagnostic efficiency and morbidity of the three methods were assessed and compared in a consecutive series over a 18 months-period after determination of a new diagnostic strategy. Among 77 interventions in 73 patients the following distribution of the methods referred was achieved: 42 CM (paratracheal and anterior subcarinal biopsies), 17 PMT (biopsies of anterior mediastinal lesions) and 18 VT (3 paratracheal, 3 posterior subcarinal, 3 anterior, 5 aortico-pulmonary window, 4 posterior biopsies or resections). All procedures were performed in general anesthesia for VT the double-lumen technique was used. Drains could be removed not later than the second postoperative day. In 7/17 cases of PMT the pleural space was opened and drained. Mean operation time (incl. waiting period for intraoperative frozen section and complete resection in a few cases) was 77 (45-100) min for VT, 49 (10-180) min for PMT and 41 (20-105) min for CM. Histological diagnosis of biopsy specimens were conclusive in all VT cases, in 15/17 PMT (88%) and in 37/42 CM (88%). Two major complications occurred: one recurrent nerve palsy following VT-resection of a neurinoma originating from the recurrent nerve itself; in a second patient submitted to mediastinoscopic biopsy, venous bleeding had to be managed by surgical sternotomy. CM as the most approved method for paratracheal and anterior subcarinal biopsies has not lost its importance. PMT as a simple and usually extrapleural intervention can further be advocated for anterior mediastinal lesions. VT turns out to be rather a complementary than a competitive invasive mediastinal diagnostic procedure and is regarded as method of choice for diagnostic approach to posterior, posterior subcarinal and aorticopulmonary lesions.

Adolescent↗
PubMed2002

Talcage by medical thoracoscopy for primary spontaneous pneumothorax is more cost-effective than drainage: a randomised study.

Simple thoracoscopic talcage (TT) is a safe and effective treatment of primary spontaneous pneumothorax (PSP). However, its efficacy has not previously been estimated in comparison with standard conservative therapy (pleural drainage (PD)). In this prospective randomised comparison of two well-established procedures of treating PSP requiring at least a chest tube, cost-effectiveness, safety and pain control was evaluated in 108 patients with PSP (61 TT and 47 PD). Patients in both groups had comparable clinical characteristics. Drainage and hospitalisation duration were similar in TT and PD patients. There were no complications in either group. The immediate success rate was different: after prolonged drainage (>7 days), 10 out of 47 PD patients, but only 1 out of 61 TT patients required a TT as a second procedure. Total costs of hospitalisation including any treatment procedure were not significantly different between TT and PD patients. Pain, measured daily by visual analogue scales, was statistically higher during the first 3 days in TT patients but not in those patients receiving opiates. One month after leaving hospital, there was no significant difference in residual pain or full working ability: 20 out of 58 (34%) versus 10 out of 47 (21%) and 36 out of 61 (59%) versus 26 out of 39 (67%) in TT versus PD groups, respectively. After 5 yrs of follow-up, there had been only three out of 59 (5%) recurrences of pneumothorax after TT, but 16 out of 47 (34%) after conservative treatment by PD. Cost calculation favoured TT pleurodesis especially with regard to recurrences. In conclusion, thoracoscopic talc pleurodesis under local anaesthesia is superior to conservative treatment by chest tube drainage in cases of primary spontaneous pneumothorax that fail simple aspiration, provided there is efficient control of pain by opioids.

Adolescent↗