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Results for “Autonomous surgery”

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PubMed1976

[Sphincter surgery. Etiology and therapy of the anal fissure (author's transl)].

Anal fissures belong to the autonomic diseases. A raised sympathicotonus (spasm dystrophy) is responsible for the origin, the poor healing tendency and the burning pain. This excessive effect of the sympathetic leads first to functional and later to organic disorders of the sphincter in the form of an achalasia. The empirically developed methods of operation have intervention in the autonomic nervous system in common, and only differ in the extent of this "invasion of the autonomic". Functional changes must be treated with local anesthetics or by stretching the sphincter, organic changes by sphincterotomy.

Adolescent↗

PubMed1999

Current issues in colorectal cancer surgery.

Increased understanding of the pathology and natural history of colorectal cancer has led to significant advances in the management of this disease. Surgical management of rectal cancer currently includes a spectrum of operative procedures ranging from radical operations to innovative sphincter-preserving techniques. At one end of the spectrum, 5% to 10% of patients present with small, superficially invasive rectal cancers amenable to a curative local excision. At the other end, a subset of patients present with locally advanced rectal cancers that require multimodality therapy, including sharp pelvic dissection with en-bloc resection of involved organs. However, the majority of rectal cancer patients present with nonfixed, yet deeply invasive, lesions requiring either a low anterior resection (LAR) or an abdominal perineal resection (APR). This report will address the controversies in the surgical management of colorectal cancer.

Anastomosis, Surgical↗

PubMed1991

Late results of thyroid surgery for hyperthyroidism performed in childhood.

The authors report on the complex follow-up of 60 patients operated on for hyperthyroidism in childhood, on average 13.7 years after surgery. In 16.7% of the patients manifest hypothyroidism, in 45% subclinical hypothyroidism was found; 30% of the patients were euthyroid, and manifest hyperthyroidism recurred in 8.3%. Autonomous adenomas were enucleated in two children and three young adults. Severe disorders in thyroid function developed especially after the surgery of diffuse toxic goiters accompanied by ophthalmopathy. The disorders of humoral and cellular immunity were detected most frequently in recurrent manifest hyperthyroidism. There was no case where ophthalmopathy progressed after the operation. In the offspring of the operated patients the incidence of hyperthyroidism was not increased in childhood. The authors call attention to the importance of postoperative follow-up and hormone treatment.

Adenoma↗

PubMed2003

[The study of autonomic nervous activities in patients with obstructive sleep apnea syndrome].

OBJECTIVE: To explore the nocturnal variation of autonomic nervous system (ANS) in patients with obstructive sleep apnea syndrome (OSAS) and the transformation after surgery. METHOD: Sixty-one subjects with OSAS were recruited to undergo 7-hour nocturnal polysomnography(PSG) in sleep lab. Sixteen subjects with OSAS were performed PSG before and after UPPP. Sixteen subjects without OSAS were included as controls. Power spectrum analysis of heart rate variability (HRV) was performed in each subject. RESULT: The nocturnal of ANS activities were abnormal in patients with OSAS, especially the enhancement of sympathetic nervous activity. It increased gradually along with aggravating condition. The activities of sympathetic and vagus nerve were decreased significantly. CONCLUSION: There are abnormal ANS activities in patients with OSAS. Effective treatment of OSAS by surgery will significantly reduce the parameters of ANS, and redress the abnormality of heart rate and blood pressure.

Adult↗

PubMed2004

Practice, efficacy, and costs of thyroid nodule evaluation: a retrospective study in a Dutch university hospital.

Fine-needle aspiration (FNA) of thyroid nodules has markedly reduced the role of thyroid scintigraphy. This is often limited to nondiagnostic or follicular (tumor) FNA classifications. In this study, we evaluated the efficacy and cost of such a strategy in a university center. From 1992-1998, 995 aspirations were done in 667 patients with palpable nodules. FNA was classified as malignant, suspicious, follicular, benign or inadequate. The Gold standard was surgery or extended follow-up, including physical examination, FNA, and/or ultrasound (US) with a time interval of half a year. Cost analysis was limited to operated patients. The first FNA yielded inadequate results in 28%, decreasing to 6% after 4 aspirations (n = 42). The other final classifications were: 76%, benign; 14%, follicular; 2%, suspicious; 1%, malignant (n = 7). Scintigraphy ((99m)Tc) suggested a hyperfunctioning autonomous nodule (adenoma) in 12% and 3% of the inadequate and follicular subset, respectively. Surgery for diagnostic reasons (n = 105) yielded 24 malignancies (23%): in 47% of suspicious, 12% of the follicular, and in all with malignant FNA. Postoperative morbidity occurred in 14 (5 laryngeal nerve paralyses) with benign histology. Major cost drivers were surgery and hospitalization: mean costs per patient amounting to Euro 3.311 in case of benign histology. We conclude that current work-up is still unable to prevent unnecessary surgery for benign thyroid nodules. Thyroid scintigraphy proved most productive in the inadequate FNA category. Improvement of the diagnostic process using immunohistochemistry and/or imaging is needed from the patient's and society's perspective.

Biopsy, Needle↗

PubMed2000

Harmonization of vascular surgical training in Europe. A task for the European Board of Vascular Surgery (EBVS).

The competence of vascular surgeons defined as the level of skill, knowledge and experience necessary to safely perform vascular surgical procedures is determined to a high degree by the quality of the preceding training. In Europe, quality assurance of vascular surgical training, unlike in the USA, is not uniform and is not the responsibility of a centralized European authority, but is a matter in which the different countries have autonomous regulations. Consequently, different targets for duration, contents and general principles for training in vascular surgery have been set. Although in the past this may not have been a problem, the unification of countries in the European Community (EC), at present known as the European Union (EU), has changed this perspective because there is increasing impetus towards a mutual recognition of trade and education between member states. In 1975, EC directive 75/362 was adopted, which insured 'freedom of migration' for medical doctors along with many other professional trades (Publications of the European Communities no. L167, 30-6-1975, p. 1). This directive implicated that certificates, diplomas and other documents issued by the national competent authorities proving medical qualification allowed physicians to practice in any EU country. In order to make this law practical it seems essential that specialist training programmes throughout the EU should conform to certain agreed basic standards. The objective of this article is to present an overview on the current pattern of vascular surgical training in Europe. In addition, the structures that were established during the recent years to promote uniformly high standards of training in vascular surgery throughout the EU will be discussed.

Education, Medical, Continuing↗

PubMed1991

Increased incidence of euthyroid and hyperthyroid goiters independently of thyrotropin in patients with acromegaly.

The incidence of palpable goiters, the thyroid functional state and thyroid radioisotope uptake was analyzed retrospectively in 80 patients with acromegaly and 80 patients with prolactinomas. 71% of all patients with acromegaly had an enlargement of the thyroid (goiter); 49% of them had diffuse and 39% nodular goiters. The incidence of goiters in patients with prolactinomas from the same iodine deficient geographic region was only 35% (82% diffuse and 18% nodular). 17.5% of acromegalic patients underwent thyroid surgery before diagnosis of growth hormone excess. 17.5% of acromegalic patients with goiters had autonomous areas in their thyroids and 5% were clearly hyperthyroid. Goiters developed slightly more often in females (74%) than in males (67%). The mean preoperative growth hormone level was higher in acromegalic patients with goiter. The incidence of goiters was positively correlated with the documented time of elevated growth hormone concentration in serum. Two patients with exaggerated response of thyrotropin (TSH) (delta TSH greater than 20 mU/l) to the application of thyrotropin-releasing hormone (TRH) had no goiters. On the other hand most patients (61%) with goiters had a low TSH-response to TRH (delta TSH less than 10 mU/l) representing in part occult autonomy of thyroid function. No patient with prolactinoma has had previous thyroid surgery nor thyroid autonomy. One patient with prolactinoma suffered from Graves' disease and none of the acromegalic patients had this disease. We finally conclude that the elevation of growth hormone leads to increased incidence of euthyroid and hyperthyroid (autonomous) goiters independently of the influence of TSH.

Acromegaly↗

PubMed2001

How to avoid and manage nerve injuries associated with aortic surgery: ischemic neuropathy, traction injuries, and sexual derangements.

Both open and endovascular surgery of the infrarenal aorta are attended by risks of neurologic complications. Injury to the periaortic autonomic plexi frequently results in ejaculatory and erectile dysfunction. Traction injuries to lumbosacral nerve roots can cause peripheral nerve injury, most commonly exhibited as a femoral nerve deficit. The least common but most feared neurologic complication that can occur with infrarenal aortic surgery is ischemic injury to the spinal cord, or conus medullaris. The risk of this complication is increased with emergent or complicated aortic reconstructions. The importance of internal iliac artery perfusion to the development of ischemic cord and nerve root injury has been recognized. Although some neurologic complications may be avoidable by technical modifications, there is a small and probably irreducible neurologic risk to aortic surgery that should be considered when weighing options for treatment of aortic pathology.

Aorta↗

PubMed1990

[Radiation-induced pericarditis. Long-term outcome. 45 cases with thoracotomy and biopsy].

Between 1970 and 1989, 45 cases of pericarditis consecutive to thoracic irradiation for cancer were studied to determine their long-term outcome and the course of their pericardial lesions. All patients were symptomatic and required surgery on account of cardiac dysfunction or, more rarely, for diagnostic purposes, i.e. to distinguish between pure autonomous pericardial complications and recurrent mediastinal neoplasias, the latter being excluded from the study. All patients were explored by thoracotomy which permitted histopathological examination of the pericardium and the pericardial fluid, at the same time as therapeutic surgery (pericardial decortication for constriction in 22 cases, creation of pleuro-pericardial windows to ensure drainage of major effusions in 23 cases). The outcome was often poor owing to associated post-radiotherapy myocardial and pulmonary lesions: there were 20 deaths, 5 of which were directly due to the neoplasia and 13 to the radiotherapeutic complications; 5 patients remained with impaired cardiorespiratory function.

Adolescent↗

PubMedDate not supplied

Amputations in diabetic patients: a plea for footsparing surgery.

The authors observed a rather high rate of primary major amputation (above-knee or below-knee) performed for diabetic foot problems as well as an important revision rate for minor amputations (forefoot or toe) in diabetics. They reviewed their experience in order to compare it with more recent data from the literature, pleading for foot-sparing surgery. From 1993 to 1998, 186 amputations were performed on 146 diabetic patients. The cause of foot ulcers was neuropathy in 43 of them (51 episodes of diabetic foot problems) while in the remaining 103 patients (135 episodes of diabetic foot problems), diabetic macroangiopathy (absent ankle pulses) was on cause. For neuropathic foot problems, amputations were almost minor, resulting in a limb salvage rate of 90%. Only five of these patients (12%) had primary major limb amputation versus 43 of the dysvascular patients (42%). The reasons for major amputation by first intention were extensive tissue loss, intractable infection or non-reconstructible occlusive vessel disease, as judged by the surgeon. A foot-sparing surgery was attempted in 92 dysvascular cases. In only 44 of them, a preliminary vascular repair was performed. Twenty eight percent of the primary toe amputations and 24% of the forefoot amputations required secondary revision to a more proximal level. Minor amputations in case of diabetic neuropathy were characterized by a more favourable outcome: only 14% of the toe and 9% of the forefoot amputations failed. During follow-up, only 63% of the major amputations regained an autonomic walking capability with their prosthesis. Wound healing problems in diabetic foot are mainly due to infection and poor tissue perfusion. An aggressive control of the infection and distal revascularization of calf- or foot arteries, whenever possible, could improve the results of diabetic foot surgery. The poor functional recovery after major amputation (only 63% autonomic gait with limb prosthesis) argues for foot-sparing surgery whenever possible.

Aged↗

PubMedDate not supplied

Which symptoms of anxiety diminish after surgical interventions for Parkinson disease?

OBJECTIVE: The purpose of the current study was to address whether improvement in anxious symptoms after surgical treatment of Parkinson disease (PD) reflects a true reduction in anxiety as opposed to an epiphenomenon of parkinsonian symptom amelioration. BACKGROUND: Recent research suggests that anxiety is common in PD. An association between surgical intervention for PD and anxiety reduction has been reported; however, it is not clear which specific symptoms of anxiety improve. METHOD: Thirty-nine PD patients completed the Beck Anxiety Inventory (BAI) approximately 1 month before and 4 months after surgery. Twenty-four participants underwent unilateral pallidotomy, 10 underwent deep brain stimulating electrode implantation of the internal segment of the globus pallidus, 4 underwent thalamic deep brain stimulating electrode implantation, and 1 underwent left thalamotomy. RESULTS: Statistically significant reductions were found postoperatively in terms of BAI total score as well as neurophysiologic, autonomic, and subjective factors from the BAI. The panic factor did not significantly change after surgery, possibly secondary to limited power afforded by the sample size. CONCLUSIONS: Results suggest that surgical intervention for PD is associated with reduction in anxiety symptoms distinct from symptoms of PD. In other words, improvement in anxious symptoms reflects a true reduction in anxiety rather than simply being an epiphenomenon of parkinsonian symptom amelioration.

Anxiety↗

PubMed2006

Bradycardia and hypotension refractory to ephedrine and atropine treatment: severe autonomic dysfunction with abnormal heart rate variability.

Diabetic patients with autonomic dysfunction are potentially poor risks for anesthesia and particular care is needed during and after surgery. We here report a 48-year-old male patient with diabetes mellitus who suffered from intraoperative hypotension and bradycardia which did not respond to ephedrine and atropine treatment and eventuated in cardiac arrest. A heart rate variability study confirmed the diagnosis of autonomic dysfunction after the event. Possible predisposing mechanisms and anesthetic considerations are discussed.

Atropine↗

PubMed1995

Laparoscopic Resection for Colorectal Cancer: Limitations and Concerns.

Laparoscopic skills and perceptions are an increasing part of the "surgical commonsense" of the younger surgeon. The part played by the laparoscope in colorectal surgery will thus increase gradually over the coming years, and this process is unlikely to be prevented by widespread doubts and scepticism, which are quite properly applied at this time to cancer surgery. Nevertheless, permanent cure and the absence of a stoma-thus, the avoidance of autonomic nerve damage-remain far more important to the patient than any of the advantages so far conferred by the laparoscopic approach. However, there is a possibility that improved visualization low in the pelvis, particularly with the development of newer and better instruments, will actually facilitate better dissection and more accurate deep pelvic surgery than has been possible by open surgery in the past.

Journal Article↗

PubMed1976

[General anesthesia in major cancer surgery of the upper respiratory and digestive tracts. Significance of a fentanyl-thiamine combination].

Synaptanalgesia uses a polysynaptic inhibitor: thiamine and a powerful analgesic drug with or without nitrous oxide. This type of vigil or sub-vigil anesthesia used in major cancer surgery of the upper digestive tract and the airway, permits one to obtain: -efficacious protection of the autonomic nervous system, in spite of manipulations of highly reflexogenic areas, -a marked reduction in bleeding. The technique used is derived from that of other authors: DE CASTRO, MUNDELEER, VALENI, MAZZONI, GASPARETTO, adapting it to this type of surgery and attempting to simplify it.

Adult↗

PubMed2005

The effect of insulin on cardiac autonomic balance predicts weight reduction after gastric bypass.

AIMS/HYPOTHESIS: The aim of this study was to assess the predictive role of autonomic reactivity in body weight loss induced by gastric bypass. METHODS: A group of 22 morbidly obese subjects, who were due to undergo a gastric bypass, were submitted, before surgery, to a euglycaemic-hyperinsulinaemic clamp, during which a continuous recording of the ECG was performed. The effect of insulin on cardiac autonomic balance was evaluated by performing power spectral analysis of heart rate variability. The low-to-high frequency ratio was calculated before and during the clamp and its modifications were expressed as % delta low-to-high frequency ratio (%Delta L: H). RESULTS: Preoperative %Delta L: H showed a significant (p=0.0009, r2=0.43), positive relationship to the reduction of body weight, measured 1 year after surgery and expressed as % excess weight loss (% EWL). Preoperative BMI was also significantly (p=0.0009, r2=0.43) negatively related to the 12-month % EWL. In a multiple regression analysis, %Delta L: H remained a significant (p=0.003), independent predictor of body weight loss, even when preoperative BMI or age, % fat mass, insulinaemia and glucose disposal were taken into account. CONCLUSIONS/INTERPRETATION: The best correction of excess body weight was achieved by those obese subjects who had a preserved capacity to shift their cardiac autonomic balance towards a sympathetic prevalence in response to an euglycaemic-hyperinsulinaemic clamp. Further studies are needed to elucidate the mechanisms through which the autonomic nervous system influences weight reduction.

Adult↗

PubMed1995

Variations in the processes and structures of cardiac surgery nursing care.

Nurses play an invaluable role as key members of the cardiac surgery patient's medical care team. Over the last century, the nursing profession has become more independent and autonomous. Despite the widespread use of nursing quality indicators, the effect of nursing-specific processes and structures of care on patient outcomes is unknown. Thus, the Processes, Structures, and Outcomes of Care in Cardiac Surgery (PSOCS) study was initiated, in part, to determine the potential effect of nursing processes and structures of care on cardiac surgery patients' risk-adjusted outcomes. In this article, the authors summarize the key components of nursing structures of care incorporated in the PSOCS study. Nursing process variables were not sufficiently designed into the study to address hypotheses relating nursing care processes to patient outcomes. An analysis of the pilot test data from September 1992 to September 1993 demonstrated potentially important variations between the six pilot centers regarding nursing care provider profiles (eg, educational preparation, specialty certification, and experience levels) and nursing staff ratios (eg, within the surgical intensive care unit). When linked to risk-adjusted patient outcomes, these variations in nursing structure of care may offer important insights toward improving the quality of care of cardiac surgery patients.

Adult↗

PubMed1980

A prospective study of sexual function after major colorectal surgery.

Excision of the recto-sigmoid and rectum for cancer or inflammatory disease frequently damages the autonomic nerve supply. The anatomy and function of the autonomic nervous system in the pelvis is reviewed. Thirty-two patients who underwent excision of the rectum have been studied: 28 operations were for carcinoma, 4 for ulcerative colitis. A detailed history of sexual function was obtained preoperatively together with a neurological examination of the genitalia and perineum. Biopsies were taken from the surgical specimens and examined for the presence of nerve tissue. A further sexual history was taken 3 months postoperatively. Ten sexual active men (ages 46-74) who had anterior resections or abdominoperineal excisions for carcinoma tended to show impaired sexual activity if there was excessive nerve tissue in the specimen. Two out of 3 sexually active women (ages 53-68) who had cancer operations had satisfactory sexual function postoperatively. Four patients (ages-66) all had satisfactory sexual function after panproctocolectomy for ulcerative colitis. The advantages of avoiding damages to the pelvic autonomic nerves at operation are discussed.

Adult↗

PubMed2005

The consent and counselling of patients for cataract surgery: a prospective audit.

PURPOSE: The aims of ideal preoperative informed consent include educating the patient adequately to enable an autonomous decision to be made without causing undue anxiety. We study how the paternalistic and nonpaternalistic approaches meet this ideal. The influence of the new patient consent forms is also assessed. METHODS: Two cycles of a prospective clinical audit are presented. An assessment of relevant patient knowledge was performed by patient interview. Visual analogue scales were used to quantify patient anxiety. RESULTS: The first cycle, examining a paternalistic approach, demonstrated: 37% of patients understood what a cataract was and 48% understood what surgery involved. 48% misunderstood that cataract surgery was completely risk free. In total, 80% of patients undergoing second eye surgery believed that it was completely risk-free. Average anxiety visual analogue scores (VAS) for cataract surgery were low (2.89). The second cycle, examining the nonpaternalistic approach combined with the implementation of new consent forms showed that, despite more explicit repeated preoperative consent: 39% of patients understood correctly what a cataract was, 28% understood what surgery involved and 43% misunderstood that surgery was completely risk-free. All patients undergoing second eye surgery thought that it was risk-free. The average anxiety VAS for cataract surgery were moderate (5.00). CONCLUSIONS: Both paternalistic and non-paternalistic approaches to informed consent are inadequate in meeting the demands of the ideal informed consent. The new patient consent forms appear to have little effect in influencing patient knowledge about their surgery. Patients undergoing second eye surgery often have an overoptimistic view of cataract surgery.

Aged↗