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At least 1,315 records · Page 73Linked to original sources
PubMed2004

[Endoscopic clipping of a gastric perforation after GIST resection].

BACKGROUND: The application of endoscopic clips in the therapy of bowel or stomach perforations has been reported in few cases only. CASE REPORT: In a 43-year-old woman, endoscopic resection of a submucosal gastric tumor sized 1.2 cm, histologically proven to be a gastrointestinal stromal tumor (GIST), was complicated by bleeding and a small perforation. In the emergency endoscopy not only the bleeding but also the perforation could be treated successfully using hemoclips. The clinical course remained free from further complications. CONCLUSION: This case, as well as previously reported cases, demonstrates that the endoscopic hemoclip technique seems to be suitable for the treatment of some small gastric perforations.

Adult↗
PubMed2004

Endovascular treatment of remnants of intracranial aneurysms following incomplete clipping.

We report clinical and angiographic findings in eight patients treated by the endovascular approach for an intracranial aneurysm remnant after incomplete surgical clipping. They were seven women and one man, mean age 38 years (range 14-50 years). In three, the remnant was responsible for a recurrent subarachnoid haemorrhage. All were treated by embolisation of the remnant using Guglielmi detachable coils. In two, a nondetachable balloon was inflated in front of the remnant during coil detachment because of a wide neck. Mean clinical and imaging follow-up was 19 months (range 12-24 months). Immediate angiography showed complete occlusion of the remnant and follow-up clinical examination showed good or excellent recovery in all patients. Imaging follow-up confirmed persistent occlusion of the remnant in all cases.

Adolescent↗
PubMed2004

Laparoscopic transperitoneal clipping of the inferior mesenteric artery for the management of type II endoleak after endovascular repair of an aneurysm.

We report the case of a high risk patient with an abdominal infrarenal aortic aneurysm (AAA) who was treated by endovascular technique and the subsequent management of a type II endoleak by the laparoscopic approach. In this case, a 74-year-old woman with a 6-cm infrarenal AAA underwent endovascular repair using a bifurcated stent-graft device. Surveillance CT scan showed a persistent type II endoleak at 1 week and 3 months after the operation. Angiography confirmed retrograde flow from the inferior mesenteric artery (IMA). Attempted transarterial embolization of the IMA via the superior mesenteric artery was not successful. Laparoscopic transperitoneal IMA clipping was performed. Subsequent aortic duplex scan and CT scan confirmed complete elimination of the type II endoleak. We conclude that a combination of endovascular and laparoscopic procedures can be used to manage AAA successfully.

Aged↗
PubMed1998

The use of bipolar cautery, laparosonic coagulating shears, and vascular clips for hemostasis of small and medium-sized vessels.

Advanced laparoscopic surgery requires a reliable method of hemostasis. In order to determine the efficacy of common hemostatic devices, we tested bipolar electrosurgery (BPES), laparosonic coagulating shears (LCS), and vascular clips (VC) on arteries of various sizes to compare the strength of hemostasis against elevated intraarterial pressure. The procedures were performed on a porcine model through a laparotomy. Segments of visceral arteries were isolated and cannulated with an angiocatheter that was linked to a pressure monitor. After hemostasis with the tested instrument and division of the vessel, the intraarterial pressure was elevated by infusion of saline solution through the angiocatheter. The pressure was recorded when bleeding occurred through the cut end of the vessel or when the pressure reached 300 mm Hg. All three devices were effective in maintaining hemostasis on small (diameter, 0.25-0.5 mm) and medium-sized arteries (diameter, 2-3.5 mm) with a success rate ranging between 75% and 100% (p = n.s.). Practice and technical finesse were required with the use of the LCS and BPES before excellent results could be obtained. The LCS has an advantage over BPES because it allows the surgeon to perform hemostasis and division simultaneously, thus keeping the operating field clean and avoiding instrument adhesion to the tissue.

Animals↗
PubMed2005

Is surgical clipping becoming underused?

Coil embolization is a treatment for intracranial aneurysms with a particular appeal for posterior circulation aneurysms. However, although this procedure is effective in well-selected intracranial aneurysms, it has a series of limitations that may be overlooked as a result of its rapid technological evolution and its minimally invasive appearance. The author analyses the data that lead him to consider that since the introduction of coil embolisation in 1991 and its progressive diffusion, the technique of surgical clipping risks being underused as a therapeutic procedure for intracranial aneurysms because of the shortage of vascular neurosurgeons trained and experienced in its use.

Clinical Trials as Topic↗
PubMed2001

Analysis of nonpenetrating clips versus sutures for arterial venous graft anastomosis.

The use of nonpenetrating clips (NPC) for vascular anastomosis is quickly becoming accepted. Studies attest to decreased anastomotic time, comparable patency rates, and decreased blood loss. Few human studies on the use of NPC have been done to date. The purpose of this study was to evaluate primary patency rates, operative time, and complications associated with NPC compared to those with standard sutures for arterial venous graft (AVG). We retrospectively reviewed the clinical course of 82 patients with a mean age of 45 years (range, 22 to 87) from February 1996 to July 1999. All patients underwent upper extremity AVG construction. The procedures were performed at a single institution, by a single, well-experienced surgeon who has extensive experience with NPC. Primary patency rates, operative time, and complications were analyzed. Overall thrombotic incidence of AVG when NPC were used (27/48, 56%) was similar to that of sutures (17/34, 50%). Thrombotic incidence within the first year was similar as well (23/48, 48% and 13/34, 38%). The mean time to primary thrombosis was similar in both groups (6.9 and 6.8 months). The operative time required to construct an AVG with NPC (83 min) was significantly less than that with sutures (96 min) (p = 0.015). There was no significant difference in incidence of graft infection or pseudoaneurysm formation. NPC for AVG reduced operative time and resulted in primary patency and complication rates similar to those associated with use of sutures. The mean time to primary thrombosis was similar for both groups. Our findings suggest an intimal hyperplastic response of a similar nature resulting in thrombosis of both NPC and sutured AVGs.

Adult↗
PubMed2003

The technique of endoscopic thoracic sympathectomy: resection, clipping and cautery.

Three authors describe their individual technique for performing ETS. These are 1) a two-port approach under singlelung ventilation using a double-lumen tube and cutting the chain, 2) a two-port approach under endotracheal or mask anesthesia and clipping of the chain, and 3) a single-port approach under endotracheal or mask anesthesia and cautery of the chain. The sections are purely didactic and no attempt is made to compare or contrast the methods.

Cautery↗
PubMed2003

Treatment of palmar hyperhidrosis by endoscopic clipping of the upper part of the T4 sympathetic ganglion. Preliminary results.

Endoscopic thoracic sympathetic surgery is a safe and effective method of treating palmar hyperhidrosis. Although hand dryness is the positive outcome of surgery, a residual amount of moisture in the hand is believed to improve the quality of life. Reflex sweating is a well-recognized and annoying complication that surgeons endeavor to avoid. From May 1, 2002 to July 31, 2002, 52 patients suffering from palmar hyperhidrosis were operated on by means of endoscopic clipping of the upper part of the T4-sympathetic ganglion (Upper ESB4). There were 24 males and 28 females with a mean age of 25 years. The mean follow-up period was 8.3 months. The patients answered a detailed questionnaire addressing the following issues: the recurrence rate, the degree of hand dryness, the extent of and areas of reflex sweating, the occurrence of gustatory and facial sweating, and the degree of satisfaction. The surgical outcome was satisfactory. Most patients demonstrated no or only slight hand sweating. Moderate sweating without discomfort was experienced in 9% of patients. Only 25% of patients required the use of lotion for hand dryness. Reflex sweating was observed in 87.5% of the patients but extremely uncomfortable in only 3.2%. Ninety-four percent of patients were satisfied. The remaining 6% were not satisfied but did not regret the operation. Although the duration of the follow-up period in this study was relatively short, we could obtain results comparable to other data in the literature. This is a simpler procedure and less damaging to the sympathetic system.

Adult↗
PubMed2005

Reduced inhibitor 1 and 2 activity is associated with increased protein phosphatase type 1 activity in left ventricular myocardium of one-kidney, one-clip hypertensive rats.

UNLABELLED: In failing hearts, although protein phosphatase type 1 (PP1) activity has increased, information about the regulation and status of PP1 inhibitor-1 (INH-1) and inhibitor-2 (INH-2) is limited. In this study, we examined activity and protein expression of PP1, INH-1 and INH-2 and phosphorylation of sarcoplasmic reticulum (SR) phospholamban (PLB), a substrate of PP1 and modulator of SR Ca2+-ATPase activity, in failing and non-failing hearts. These studies were performed in LV myocardium of seven rats with chronic renal hypertension produced by Goldblatt's one-kidney, one-clip procedure and seven age-matched sham-operated normal controls (CTR). Eight weeks after surgery, LV ejection fraction, LV hypertrophy, and pulmonary congestion were determined in all rats. PP1 activity (nmol 32P/min/mg non-collagen protein) was assessed in LV homogenates using 32P-labeled phosphorylase a as substrate. INH-1 and INH-2 activity was determined in the immunoprecipitate of LV homogenates and expressed as percentage inhibitory activity. Using a specific antibody, LV tissue levels of PP1C and calsequestrin (CSQ), a SR calcium binding protein, which is not altered in failing hearts, were also determined. Further, total and phosphorylated PLB, INH-1 and INH-2 protein levels were determined in the LV homogenate and phosphoprotein-enriched fraction, respectively. The band density of each protein was quantified in densitometric units and normalized to CSQ. RESULTS: rats with chronic renal hypertension exhibited significantly reduced LV ejection fraction and increased LV hypertrophy and pulmonary congestion, characteristics of chronic heart failure (CHF). We found that compared to CTR, (1) both INH-1 (10.2+/-2 versus 57.5+/-1; p < 0.05) and INH-2 activity (3.8+/-0.4 versus 36.2+/-4; p < 0.05) were reduced, (2) total and phosphorylated PLB amount reduced, (3) protein level of phosphorylated INH-1 was reduced (2.32+/-0.1 versus 0.73+/-0.04; p < 0.05) whereas that of phosphorylated INH-2 increased (3.05+/-0.3 versus 1.42+/-0.1; p < 0.05), and (4) PP1 activity was increased approximately 2.6-fold in rats with CHF (1.59+/-0.05 versus 0.61+/-0.01; p < 0.05) while protein level of the catalytic subunit of PP1 (PP1C) increased 3.85-fold (0.77+/-0.05 versus 0.20+/-0.02; p < 0.05). These results suggest that reduced inhibitory INH-1 and INH-2 activity, increased PP1C protein level, and reduced PLB phosphorylation are associated with increased PP1 activity in failing hearts.

Animals↗
PubMed1993

Thoracoscopic clipping of patent ductus arteriosus in premature infants.

Patent ductus arteriosus is a frequent indication for surgical intervention in preterm infants. Commonly this operation is performed through a dorsolateral thoracotomy. In an animal trial (piglets smaller than 1,400 g) instruments and technique for thoracoscopic clipping of patent ductus arteriosus were developed. Since January 1993, 3 premature infants have been treated with this new minimally invasive procedure. The instruments and the surgical technique are demonstrated.

Ductus Arteriosus, Patent↗
PubMed1994

Thoracoscopic clipping and ligation of a patent ductus arteriosus.

Several techniques of patent ductus arteriosus occlusion primarily by thoracotomy have been practiced. They have shown to be more reliable than nonsurgical procedures. Videothoracoscopy has been useful in several intrathoracic surgical procedures with faster recovery and minimal mortality and morbidity. We report 2 patients with clipping and ligation of a patent ductus arteriosus by a thoracoscopic approach. This technique may be useful in children with a noncomplicated patent ductus arteriosus. It allows an easier recovery and causes less pain.

Child↗
PubMed1983

A simple noise clipping circuit for neurophysiological audio monitors.

A very simple circuit is described which removes the low amplitude components of audio frequency signals, leaving the positive and negative peaks superimposed on a flat baseline. The clipping is symmetrical and adjustable in gain. Thus the baseline noise in audio monitors used in extracellular single-unit recording can be attenuated. This enhances the aural discrimination of single units and reduces aural fatigue.

Auditory Perception↗
PubMed1988

Elevated arterial cyclic AMP levels during the development of one-kidney, one-clip and DOCA hypertension in rats.

A marked increase in the cyclic AMP content and concentration of the thoracic aorta was detected during the rise in blood pressure produced by one-kidney, one-clip and DOCA hypertension. This alteration was accompanied by the development of vascular hypertrophy and preceded the abnormal increase in DNA content observed in the arterial system during the more chronic stages of the disease. These experiments suggest the participation of cyclic AMP in the development of hypertension vascular growth.

Animals↗