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Complications of vasectomies in the United States.

Physicians in the United States were surveyed in 1983 to gather information concerning the number of vasectomies they performed in 1982 as well as their use of anesthesia and complications of those vasectomies. Most urologists performed vasectomies, whereas family physicians and general surgeons were less likely to do so. As expected, most physicians used local anesthesia, occasionally in combination with a sedative; however, 22 percent of physicians reported using general anesthesia for at least some vasectomies. Complication rates were in the ranges reported by previous case series. Physicians who performed between one and ten vasectomies in 1982 had higher rates of hematoma and hospitalization for treatment of a complication than physicians who performed more vasectomies. Maintenance of surgical skills appears to be important in preventing complications of this usually low-risk procedure.

Anesthesia, General↗

A study of complications arising from different methods of anesthesia used in high-dose-rate brachytherapy for cervical cancer.

The purpose of this report is to review the complications related to different methods of anesthesia for high-dose-rate (HDR) brachytherapy for cervical carcinoma. All patients diagnosed with cervical cancer between 1999 and 2002 treated with 3-channel HDR brachytherapy were entered. Complications due to anesthesia for each fraction of brachytherapy were graded using the Common Toxicity Criteria. Eighty-four fractions of brachytherapy were delivered to 18 patients: 19 fractions with patients under general anesthesia (GA), 41 with patients under topical anesthesia and sedation, 5 with patients under paracervical nerve block, and 19 with patients under conscious sedation. Thirteen complications were reported: 12 related to GA and 1 due to paracervical nerve block. Of complications due to GA, 7 were grade 1 and 5 were grade 2. The complication due to paracervical nerve block (seizure) was grade 3. GA had significantly more complications than topical anesthesia or conscious sedation (both P < 0.001). HDR brachytherapy for cervical cancer under GA has significantly more complications than other methods. Given the increasing use of fractionated 3-channel brachytherapy, further investigation of risks and benefits of anesthetic techniques is required.

Anesthesia↗

Percutaneous gastrostomy: the Stanford experience.

Many techniques have been devised to provide enteral nutrition to the patient with cancer of the head and neck. No single technique will be adequate for all patients, but our experience with percutaneous gastrostomy has encouraged us to recommend it as a valuable alternative to conventional modalities. The charts of 156 patients, identified by computer-assisted search as having undergone gastrostomy at Stanford University Hospital or Palo Alto Veterans Administration Hospital from 1984 to 1987, were reviewed. Of these, 24 patients with a primary diagnosis of head and neck malignancy underwent percutaneous gastrostomy and form the basis for this study. Parameters evaluated included operation time, type of anesthesia, perioperative complications, and cost. Percutaneous gastrostomy can be performed under local anesthesia or at the time of routine head and neck procedures such as staging endoscopy. Our success with this technique leads us to recommend it as a valuable alternative for providing nutrition to head and neck cancer patients.

Adult↗

[Cerebellar hemorrhage after spinal anesthesia].

Cerebellar hemorrhage is a rare complication of spinal anesthesia. We report a case in a 51-year-old woman with a history of hypertension who underwent uterine dilatation and curettage with spinal anesthesia. During recovery she vomited and complained of headache. Postdural puncture headache was diagnosed. When there was no response to conventional treatment, computed tomography and magnetic resonance scans of the head were performed. The scans confirmed cerebellar hemorrhage due to rupture of a cavernous angioma. The patient recovered fully without surgical decompression. We review the pathogenesis of headache and cerebral hemorrhage after spinal anesthesia and propose differential diagnosis between spontaneous rupture related to hypertension and cerebrospinal fluid hypotension syndrome caused by trauma from lumbar spinal puncture. Patients with prolonged severe headache after spinal anesthesia require neurologic and radiologic monitoring to rule out the possibility of intracranial complications.

Anesthesia, Spinal↗

[Anesthetic management of patients with cardiomyopathies].

Anesthetic management of patients with cardiomyopathy was studied. In the past 8 years, we experienced 24 surgical procedures for 16 patients complicated with cardiomyopathy of whom 6 cases with hypertrophic type (HCM) and 10 cases with dilated type (DCM). In HCM there was no correlation between the incidence of intraoperative complication and preoperative evaluation by New York Heart Association. In HCM cases who revealed atrial fibrillation, conduction disturbance on ECG and hypokinesis on echocardiogram resulted in high incidence of cardiac complication during anesthesia. Induction of anesthesia is extremely risky if the anesthesiologist is not aware of the presence of cardiomyopathies. In DCM, preoperative episode of heart failure, arrhythmias and conduction disturbance on ECG were considered as anesthetic risk factors. Both in HCM and DCM, there were no statistical significance in complication between general anesthesia and epidural anesthesia. The authors recommend epidural technique as a method of choice for HCM patient.

Adult↗

Maternal mortality during hospital admission for delivery: a retrospective analysis using a state-maintained database.

UNLABELLED: This study reports the overall age- and race-specific delivery mortality ratios from January 1984 to December 1997 and medical and demographic risk factors associated with maternal death during hospital admission for delivery. We performed a retrospective case control study using patient records from a state-maintained anonymous database of all nonfederal Maryland hospitals that performed deliveries from 1984 to 1997. Variables studied included patient demographics and International Classification of Diseases, 9th Revision, Clinical Modification, diagnosis, and procedure codes. Mortality was the outcome variable. Of the 822,591 hospital admissions for delivery during the 14-yr study period, there were 135 deaths. The overall delivery mortality ratio was 16.4. The most common diagnoses associated with mortality during hospital admission for delivery included preeclampsia/eclampsia (22.2%), postpartum hemorrhage/obstetric shock (22.2%), pulmonary complications (14%), blood clot and/or amniotic embolism (8.1%), and anesthesia-related complications (5.2%). The identification of medical and demographic risk factors may have significant implications creating initiatives aimed at decreasing the public health burden associated with maternal mortality. IMPLICATIONS: This study reports the medical and demographic risk factors associated with maternal death during hospital admission for delivery by using a state-maintained database. This information could prove useful in the creation of initiatives aimed at decreasing the public health burden associated with maternal mortality.

Adolescent↗

Operative times, postanesthesia recovery times, and complications during sinonasal surgery using general anesthesia and local anesthesia with sedation.

OBJECTIVE: The goal was to compare complication rates and recovery times in patients undergoing elective septoplasty or endoscopic sinus surgery using local anesthesia with sedation (LAS) versus general anesthesia (GA). METHODS AND PATIENTS: A retrospective chart review of a consecutive sample of 177 patients undergoing elective septoplasty or endoscopic sinus surgery between July 1, 1994, and June 30, 1996, was carried out at our university-based outpatient surgery unit. Outcome measures included total operative time, surgical time, recovery time, and perioperative complications. RESULTS: Total operative and recovery times were shorter in patients undergoing LAS. The frequency of emesis, epistaxis, and nausea were less in the LAS population than in the GA population. Three patients who underwent GA required unplanned admissions. CONCLUSION: This study suggests that in selected patients undergoing sinonasal surgery, LAS may result in shorter total operative times, shorter recovery times, and less frequent nausea, emesis, and epistaxis than GA.

Adolescent↗

Influence of the type of anesthesia and hydrodissection on the complication rate after tension-free vaginal tape procedure.

OBJECTIVE: To evaluate the success rate of tension-free vaginal tape (TVT) performed under spinal and general anesthesia and to assess the efficacy of hydrodissection of the space of Retzius in reducing intraoperative and postoperative complications. STUDY DESIGN: A total of 149 patients, were enrolled. Of these, 53 patients underwent the TVT placement (alone or in combination with other pelvic surgery) under general anesthesia and 96 under spinal anesthesia. TVT placement was performed as originally described, apart from the hydrodissection of the space of Retzius, that was performed only in 82 cases. In the remaining 67 patients the TVT needles were introduced directly without hydrodissection. Postoperatively, the patients were scheduled for evaluation at 1, 3, 6 and 12 months. Cure was defined as no postoperative stress incontinence. RESULTS: Overall, the incidence of intraoperative and postoperative complications was 3.3% and 14.7%, respectively. No statistical difference was found in the intraoperative (1.9% versus 4.2%, P = 0.65) and postoperative complications (11.3% versus 16.7%) rates between the general and spinal anesthesia groups. No difference was found in the cure rate between groups (96.2% versus 95.8%). Similarly, no difference was found in the rate of intraoperative (3.7% versus 3.0%) and postoperative (15.9% versus 13.4%) complications between patients who had hydrodissection and those who did not. When the analysis was restricted to patients who underwent the TVT placement without concomitant surgery (n = 88), there was no difference in the incidence of intraoperative (2.1% versus 5.0%, P = 0.59) and postoperative complications (14.6% versus 15.0%, P = 1.0) between patients who had hydrodissection and those who did not. CONCLUSIONS: Efficacy and safety of the TVT procedure are not affected by the type of anesthesia (general or loco-regional). Hydrodissection of the space of Retzius during TVT placement does not reduce the risks of intraoperative complications.

Adult↗

Anesthesia and preoperative and postoperative medications.

Retrobulbar blocks, although widely used, still have potentially serious complications. Topical anesthesia presents less risk of injury to the globe and less pain but requires careful usage and an experienced surgeon. New techniques, however, allow for an increase in the percentage of patients able to have topical anesthesia. Preoperatively, 2.5% phenylephrine is found to be just as effective as 10% phenylephrine, and, when compared with wound closure and surgeon's experience, the effect of prophylactic medications was found to be negated. Postoperatively, diclofenac is found to be as effective an anti-inflammatory agent as prednisolone. Also, the addition of 10% phenylephrine to 4% pilocarpine drops enhances the effectiveness of pharmacologic treatment of postoperative iridocorneal adhesions. In addition, ophthalmologists should be aware of emerging antibiotic resistance.

Administration, Topical↗

The association of intraoperative factors with the development of postoperative delirium.

PURPOSE: To examine the association of intraoperative factors, including route of anesthesia, hemodynamic complications, and blood loss, with the development of postoperative delirium. PATIENTS AND METHODS: We studied 1,341 patients 50 years of age and older admitted for major elective noncardiac surgery at an academic medical center. Data on route of anesthesia, intraoperative hypotension, bradycardia and tachycardia, blood loss, number of blood transfusions, and lowest postoperative hematocrit were obtained from the medical record. Delirium was diagnosed by using daily interviews with the Confusion Assessment Method, as well as from the medical record and the hospital's nursing intensity index. RESULTS: Postoperative delirium occurred in 117 (9%) patients. Route of anesthesia and intraoperative hemodynamic complications were not associated with delirium. Delirium was associated with greater intraoperative blood loss, more postoperative blood transfusions, and postoperative hematocrit <30%. After adjusting for preoperative risk factors, postoperative hematocrit <30% was associated with an increased risk of delirium (odds ratio = 1.7, 95% confidence interval 1.1-2.7). CONCLUSIONS: Further study is required to determine whether transfusion to keep postoperative hematocrit above 30% can reduce the incidence of postoperative delirium.

Aged↗

Progressive adhesive arachnoiditis following spinal anesthesia.

Neurological complications-some of them serious-sometimes occur following spinal anesthesia. In the majority of the relatively few cases in which they occur, they are caused by factors which can be obviated.Rigid adherence to defined safeguards will reduce the incidence of complications and overcome most of the objections to the procedure.

Adhesives↗

[Registration of problems during anesthesia. Analysis of risk factors and quality control].

Society continues to increase its demands on the medical profession in regard to quality. We believe this situation should be met by a more systematic approach to risk evaluation and quality assessment of our work. We report an attempt to establish a routine system for recording complications during anesthesia. We included all 14,735 patients who were anesthetized during one year. Data on preoperative disease, type of anesthesia and operation, and problems encountered during anesthesia were recorded on the routine anesthesia chart. An arbitrary scale from 1-3 indicated the severity of the problem. Postoperatively, data from each patient were fed into a personal computer. The system is feasible in a busy clinical setting. Key problems are work discipline, exact criteria for complications, and quality control of anesthesia charts. 655 problems were recorded in 599 patients. 80 problems were very serious. Problems such as drop in blood pressure, intubation, laryngeal spasm and cardiac arrhythmias dominated. Such registration increases awareness for the safety of the patients, and enables us to assess the risk and evaluate the quality of our work. The system is now an integral part of the department's routine.

Adolescent↗

Arthroscopy of the knee. Evaluation of an out-patient preocedure under local anesthesia.

In 228 knees submitted to arthrotomy following arthroscopy, there were eleven diagnostic errors in those knees examined under general anesthesia and five diagnostic errors in those knees examined under local anesthesia with a diagnostic accuracy of 91.1 and 95.2 per cent, respectively. Therefore, we concluded that accuracy is not diminished by performing arthroscopic examinations under local anesthesia on ambulatory out-patients. In 297 knees examined under local anesthesia, no complications were encountered. In 282 knees examined under general or spinal anesthesia, there was one pulmonary embolus and two significant hemarthroses. Except when there are specific overriding considerations, local anesthesia is preferable in the performance of diagnostic arthroscopy.

Ambulatory Care↗

Short-term results and complications of prepubertal gonadectomy in cats and dogs.

OBJECTIVE: To determine short-term results and complications of prepubertal gonadectomy in cats and dogs. DESIGN: Prospective randomized study. ANIMALS: 775 cats and 1,213 dogs. PROCEDURE: Animals undergoing gonadectomy were allotted into 3 groups on the basis of estimated age (group 1, < 12 weeks old; group 2, 12 to 23 weeks old; group 3, > or = 24 weeks old). Complications during anesthesia, surgery, and the immediate postoperative period (7 days) were recorded. Complications were classified as major (required treatment and resulted in an increase in morbidity or mortality) or minor (required little or no treatment and caused a minimal increase in morbidity). An ANOVA was used to detect differences among groups in age, weight, body temperature, and duration of surgery. To detect differences in complication rates among groups, chi 2 analysis was used. RESULTS: Group 1 consisted of 723 animals, group 2 consisted of 532, and group 3 consisted of 733. Group-3 animals had a significantly higher overall complication rate (10.8%) than group-1 animals (6.5%), but did not differ from group-2 animals (8.8%). Differences were not detected among the 3 groups regarding major complications (2.9, 3.2, and 3.0% for groups 1, 2, and 3, respectively), but group-3 animals had significantly more minor complications (7.8%) than group-1 animals (3.6%), but not group-2 animals (5.6%). CLINICAL IMPLICATIONS: In this study, prepubertal gonadectomy did not increase morbidity or mortality on a short-term basis, compared with gonadectomy performed on animals at the traditional age. These procedures may be performed safely in prepubertal animals, provided that appropriate attention is given to anesthetic and surgical techniques.

Age Factors↗

Epidural anesthesia modifies cardiovascular responses to severe hypoxia in dogs.

Hypoxia is a critical and sometimes fatal complication of anesthesia. Since there is little information on the cardiovascular response to hypoxia during epidural anesthesia, we assessed the effects of epidural anesthesia on the cardiovascular response to hypoxia and on survival in dogs. We randomly assigned 36 mongrel dogs to one of three groups according to the anesthetic technique used: the thoracic group (n = 12) received thoracic epidural anesthesia plus general anesthesia, the thoracolumbar group (n = 12) received thoracolumbar epidural anesthesia plus general anesthesia, and the control group (n = 12) received general anesthesia alone. We monitored hemodynamics and plasma catecholamine concentrations and assessed survival in these groups during normocapnic hypoxia (FiO2, 0.09 for 120 min). During hypoxic challenge, PaCO2 and PaO2 values were similar in all groups. In both groups that received epidural anesthesia, heart rate, systolic and diastolic arterial pressures, and plasma epinephrine and norepinephrine concentrations were lower and arterial pH was greater than in the control group. There was no significant difference in survival among groups. Epidural anesthesia modified both the physiologic cardiovascular and catecholamine responses to hypoxia. Epidural anesthesia of the thoracic region did not appear to accelerate cardiac arrest, but it attenuated the development of metabolic acidosis during hypoxia.

Anesthesia, Epidural↗