Home About us Contact
|
Home About us Contact | ||
|
|
||
Unsuccessful Procedure (unsuccessful + procedure)
Selected AbstractsTranscatheter Closure of Congenital Ventricular Septal Defects: Experience with Various DevicesJOURNAL OF INTERVENTIONAL CARDIOLOGY, Issue 1 2003RAMESH ARORA D.M. Transcatheter closure of congenital ventricular septal defect (VSD) using various devices is gaining acceptance in selected cases of perimembranous and muscular defects, avoiding the inherent risks of cardiopulmonary bypass. The procedure was attempted in 137 patients having congenital defects using Rashkind Umbrella Device (RUD) in 29 patients, Amplatzer ventricular septal occluder (AVSO) in 107 patients, and Detachable Coil in one. All patients were selected using stringent criteria by detailed transthoracic echocardiography and/or transesophageal echocardiography. The location of VSD was perimembranous in 91 patients and was muscular trabecular in 46 patients. Seven patients had left ventricle (LV) to right atrium (RA) communication. Thirty-five patients with perimembranous and two with muscular VSD had aneurysm formation. The patients were 3 to 33 years old, and the diameter of VSD ranged from 3 to 12 mm. The pulmonary to systemic flow ratio was ,2:1 in 47 (34.3%) patients. The procedure was successful in 130 (94.8%) patients, with a success rate of 86.2% with RUD and 97.1% with AVSO. Residual shunt at 24 hours was seen in eight (32%) patients with RUD and in one patient (0.9%) with AVSO. Three (2.8%) developed transient bundle branch block, and two (1.9%) patients had complete heart block. New tricuspid stenosis and tricuspid regurgitation was observed in one patient each with AVSO. After immediate balloon dilatation, the mean pressure gradient across tricuspid valve decreased from 11 to 3 mmHg in the patient with tricuspid stenosis. On a follow-up of 1 to 66(mean 35.2 ± 10.7)months, the device was in position in all. None developed late conduction defect, aortic regurgitation, infective endocarditis, or hemolysis. At 9-month follow-up, the mean pressure gradient across the tricuspid valve was 3 mmHg in the patient with tricuspid stenosis. Complete occlusion of the shunt was achieved in 129 (99.2%) patients. One patient with RUD having persistent residual shunt underwent a second procedure with AVSO. Three out of 107 patients with AVSO had an unsuccessful procedure where the defect was perimembranous with a superior margin of defect less than 3 mm away from the aortic valve, and the specially designed perimembranous AVSO had to be retrieved because of hemodynamic compromise due to significant acute aortic regurgitation, whereas in all others, the defect was either ,3 mm away from the aortic valve or had aneurysm formation. All seven patients with LV to RA communication showed complete abolition of the shunt. Thus, in properly selected cases of perimembranous and muscular ventricular septal defects, the transcatheter closure is safe and efficacious using appropriate devices. The success rate is higher with AVSO compared with the previously used devices, as well as more successful for the muscular defects than those that are perimembranous in location. (J Interven Cardiol 2003;16:83,91) [source] A Novel Approach to Teaching PeriocardiocentesisACADEMIC EMERGENCY MEDICINE, Issue 2009Mara Aloi Pericardiocentesis can be a life-saving intervention but it is associated with significant complications if not performed appropriately. Periocardiocentesis should ideally be done under ultrasound guidance. However, in many community emergency departments (EDs) ultrasound is not routinely available, leaving the ED physician the anatomic approach. Emergency medicine residents need to achieve competence in this procedure using both techniques, but there are limited opportunities for residents to perform this procedure on live patients. Many residency programs teach this procedure using cadaver models. We have devised a model, made with readily available, inexpensive materials, that allows residents to practice pericardiocentesis using both the subxiphoid and parasternal approach in a setting that we feel is more life-like than with that using the dessicated tissue of routine cadaver models. Materials: Two racks of pork or beef ribs, wire, pericardiocentesis tray, Betadine, plastic baggies. The racks of ribs are wired together to make a thorax and are then covered with an opaque covering to simulate skin. One plastic bag is filled with Betadine and then placed within another plastic bag containing water, to simulate pericardial effusion. The bag-within-bag set-up is then secured on the under surface of the thorax. Residents can then practice either the parasternal or subxiphoid approach with the intent of aspirating clear fluid. Aspiration of dark-fluid represents cardiac penetration and is considered an unsuccessful procedure. Bags can be replaced as needed, but based on our experience, approximately 10 attempts were done before any significant leakage occurred. Total cost for the materials was less than $35. [source] Standardized Stimulation Protocol to Predict the Long-Term Success of Radiofrequency Ablation of Postinfarction Ventricular TachycardiaPACING AND CLINICAL ELECTROPHYSIOLOGY, Issue 1p2 2003DAVID O'DONNELL O'DONNELL, D., et al.: Standardized Stimulation Protocol to Predict the Long-Term Success of Radiofrequency Ablation of Postinfarction Ventricular Tachycardia.Background: The ability to predict the success of radiofrequency ablation (RFA) is an essential step in the management of ventricular tachycardia (VT) in patients with ischemic heart disease. Methods: This study tested a standardized programmed stimulation protocol and pre-specified definitions of procedural outcome. Consecutive patients referred for RFA of delayed post infarction VT were enrolled. Programmed stimulation was performed at the beginning and the end of an RFA procedure, and consisted of an 8 beat drive followed by up to 5 extrastimuli. Immediate success was defined as no inducible monomorphic VT, and a modified result was defined as the inducibility of VT with >2 extrastimuli beyond those required at baseline. Procedural failure was defined when these criteria were not met. Recurrences of sustained VT and arrhythmic deaths were monitored during long-term follow-up. Results: The study enrolled 112 patients. Immediate procedural success was achieved in 38%, a modified result in 34%, and procedural failure in 28% of patients. During a mean follow-up of 78 ± 16 months, recurrent sustained VT was observed in 25 patients. VT recurrence was 3% (3/79) in patients with a successful or modified result, compared with 67% (22/33) in those who had undergone unsuccessful procedures (P < 0.001). Conclusions: This standardized stimulation protocol and definitions of procedural success, enabled us to predict with high accuracy a VT recurrence-free long-term follow-up. This may have implications in recommending devices or other treatments after RFA for postinfarction VT. (PACE 2003; 26[Pt. II]:348,351) [source] Outpatient hysteroscopy: Factors influencing post-procedure acceptability in patients attending a tertiary referral centreAUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 6 2009Kate MCILWAINE Background:, Ambulatory hysteroscopy is a safe, reliable and cost-effective alternative to hysteroscopy under a general anaesthetic for the diagnosis of abnormal uterine bleeding. Aim:, The objective of this study was to assess which factors influenced patients' willingness to attend for future outpatient hysteroscopy. The outpatient hysteroscopy service commenced at the Mercy Hospital for Women in 2000. It provides women with the opportunity to have the cause of abnormal uterine bleeding diagnosed in an outpatient setting. Methods:, A prospective audit was conducted of 283 women attending for outpatient hysteroscopy at the Mercy Hospital for Women over a period of almost five years (May 2003 through February 2008). Results:, Of the women audited, 88.7% stated that they would accept the procedure in future, whilst 11.3% would not. There was a significant difference between the two groups with respect to their median visual analogue pain scale (VAS) pain scores during the procedure (3.00 versus 6.50 P < 0.0001) with the higher score in the group who would not re-attend for the procedure. There was also a significant difference between the two groups with respect to the change in median VAS score from pain anticipated to pain experienced (0.00 versus 3.50 P = 0.0001). The rate of unsuccessful procedures was significantly higher (40.6% versus 0.8%P < 0.05) in future non-attendees as well as a higher rate of clinical vasovagal episodes (25% versus 5.2%P = 0.01) in women who stated that they would not re-attend for the procedure. Preprocedure analgesia and type of anaesthetic administered during the procedure did not seem to influence whether women would attend for outpatient hysteroscopy in future. Conclusions:, The acceptability rate for women attending for outpatient hysteroscopy during the audit period was 88.7%. Pain was a significant determinant of procedure acceptability; however, the acceptability rate was not influenced by analgesia or type of anaesthetic administered. [source] | ||||||||||