Israel Medical Association Journal

Background: Double balloon enteroscopy is a new technique that enables deep intubation of the endoscope into the small bowel lumen. Through a channel in the endoscope, invasive procedures such as biopsy, polypectomy and hemostasis can be performed, avoiding the need for surgery.

Objectives: To prospectively analyze our results of the first 124 DBEs[1] performed since February 2007.

Methods: The study group comprised all patients who underwent DBE at the Sheba Medical Center between February 2007 and February 2009. Recorded were the patients' demographic data, comorbidities, indications for the examination, results of previous non-invasive small bowel imaging (computed tomography enterography, capsule endoscopy, etc), investigation time, and results of the procedure including findings, endoscopic interventions, complications and pathological report.

Results: A total of 124 procedures were performed in 109 patients. Of the 124 examinations, 57 (46%) were normal and 67 (54%) showed pathology. The main pathologies detected on DBE were polyps (14%), vascular lesions (17.6%) and inflammation (12%). Endoscopic biopsies and therapeutic interventions were required in 58 examinations (46%). A new diagnosis was established in 15% of patients, diagnosis was confirmed in 29% and excluded or corrected in 12%. One complication was observed: a post-polypectomy syndrome that was treated conservatively.

Conclusions: DBE is a safe procedure and has a high diagnostic and therapeutic yield. Most of the examinations were performed under conscious sedation, and only a minority of patients required deeper sedation. 

Background: Unicompartmental knee replacement has become a surgical alternative for treating isolated medial or lateral osteoarthritis of the knee or avascular necrosis of the femoral condyls.

Objectives: To evaluate the short-term results of the Oxford Phase 3^® unicompartmental knee replacement for unicompartmental knee arthrosis or avascular necrosis of the medial

femoral condyle.

Methods: During the period 2003–2005 a total of 59 patients (59 knees) underwent medial Oxford Phase 3^® unicompartmental knee replacement in our unit. The patients were interviewed and examined, and standing anteroposterior and lateral X-rays were taken. All patients completed the Western Ontario and McMaster Universities Index of Osteoarthritis and the Short Form 12 questionnaire, and the International Knee Society score was evaluated. The data were collected and statistical analysis was performed.

Results: X-rays were performed and scores for the WOMAC[1] and IKS[2] were assessed for 42 patients (31 females, 11 males). At an average of 32 months after surgery, the total WOMAC score was 30. The mean SF[3]12 physical score was 38 and the mean SF12 mental score was 51. The mean IKS score was 166. Ninety-one percent of the patients had active flexion of 120 degrees or more. Of 59 knees 7 were converted to total knee arthroplasty – all of them within the first 2 years of starting the procedure and all of them in relatively young patients.

Conclusions: Despite the higher revision rate to TKR[4] in this study, our findings confirm the short-term results reported in other studies of the Oxford medial unicompartmental knee and our early failure rate could be explained by a performance learning curve. This study confirms that this bone-preserving procedure should be considered in end-stage isolated unicompartmental osteoarthritis or avascular necrosis by surgeons who have the adequate training and experience.

Background: Monitoring the rate of infections in individual centers that treat patients with hematological malignancies is of major importance. However, there are no uniform guidelines for infection surveillance.

Objectives: To describe the epidemiology of bacterial and fungal infections in a single hematology ward and to compare methods for reporting surveillance and infection rates in other centers in Israel.

Methods: We conducted a prospective surveillance of all patients admitted to our hematology ward, applying standard definitions for invasive fungal infections and adapting definitions for non-fungal infections. Incidence rates were calculated using patients, admissions, hospital days and neutropenia days. We performed a search for other reported surveillance studies in Israel.

Results: We detected 79 infectious episodes among 159 patients admitted to the hematology ward during 1 year. Using neutropenia days as the denominator for calculation of incidence discriminated best between patients at high and low risk for infection. The incidence of invasive fungal infections was 7, 10 and 18 per 1000 neutropenia days, among all patients, those with acute leukemia and those with acute leukemia undergoing induction therapy, respectively. Only 10 reports from Israel were identified, 6 of which were prospective. Our data could not be compared to these reports because of the varying definitions and denominators used.

Conclusions: Hematology centers should monitor infection rates and report them in a uniform methodology.
 

Background: West Nile virus, the etiologic agent of West Nile fever, is an emerging mosquito-borne disease. WNV[1] was recognized as a cause of severe human meningo-encephalitis in elderly patients during outbreaks in various parts of the world.

Objectives: To analyze WNV encephalitis therapy and its outcome after prescribing hyperimmune gammaglobulin therapy.

Methods: Eight subjects with WNV encephalitis were treated with supportive therapy and 5 days of IVIG[2] 0.4 g/kg/day containing high WNV antibodies obtained from healthy blood donors.

Results: Patients who were treated with IVIG as soon as possible exhibited an improvement in their symptoms. All subjects presented with high fever, progressive confusion and headaches, nausea and vomining. The Glasgow Coma Screen for six patients ranged between 8 and 13 and all were discharged with a score of 15. The remaining two subjects died during their hospitalization.

Conclusions: In severe WNV infection, where the disease affects the central and/or peripheral nervous system, early intervention with IVIG together with supportive treatment is recommended.

Background: Elastofibroma is a rare type of lesion consisting of elastic fibers within a stroma of collagen and fatty tissue. It is usually located on the lower scapular region attached firmly to the thoracic cage, often causing debilitating pain. Its clinical presentation mimics a soft tissue tumor.

Objectives: To evaluate the diagnosis and treatment results of elastofibroma.

Methods: Clinical and radiographic evaluations were performed in 11 patients with thoracic wall mass. In five of them a biopsy was taken before surgery. All patients were operated and the diagnosis of elastofibroma was confirmed by histology. 

Results: Two patients had a postoperative seroma that resolved spontaneously within a few days. All patients resumed their preoperative activities, including sports.

Conclusions: Considering the slow-growing nature of this tumor and its typical presentation, we believe that when this diagnosis is suspected, investigation does not necessitate staging (as in sarcomas). Also, marginal surgical excision is sufficient. Observation is an acceptable alternative to surgery.
 

Background: Computed tomographic colonography, also known as virtual colonoscopy, is a rapid, non-invasive imaging technique for the detection of colorectal masses and polyps that is becoming increasingly popular.

Objectives: To evaluate the availability, technique, standards of performance and indications for CT colonography in Israel.

Methods: A questionnaire on CT colonography was sent to all radiology departments and private institutions that perform CTC[1] in Israel. We evaluated multiple technical parameters regarding the performance and interpretation of CTC as well as radiologists' training and experience.

Results: Fourteen institutions – 7 hospitals and 7 private clinics – participated in the study. Most of the small radiology departments and nearly all of the more peripheral radiology departments do not perform CTC studies. Since 2000 and until March 2007, a total of 15,165 CTC studies were performed but only 14% (2123 examinations) were performed at public hospitals and 86% (13,042 exams) at private clinics. CTC was performed after an incomplete colonoscopy or for various contraindications to endoscopic colonoscopy in up to a third of cases. In the various institutions patients were self-referred in 20–60% of cases, more commonly in private clinics. All CTC examinations were performed on 16–64 slice CT scanners and only a small minority was performed on 4-slice scanners in 2001. All but one center used low radiation protocols. Nearly all facilities used a 2 day bowel-cleansing protocol. All except one facility did not use stool tagging or computer-aided diagnosis. All facilities inflated the colon with room air manually. All institutions used state-of-the-art workstations, 3D and endoluminal navigation, and coronal multi-planar reconstructions routinely. There are 18 radiologists in the country who perform and interpret CTC studies; half of them trained abroad. Ten of the radiologists (56%) have read more than 500 CTC studies.

Conclusions: In Israel, CTC examinations are performed by well-trained and highly experienced radiologists using the latest CT scanners and workstations and adhering to acceptable CTC guidelines.  

background: many electrophysiologists recommend implantable cardioverter defibrillators for patients with Brugada syndrome who are cardiac arrest survivors or presumed at high risk of sudden death (patients with syncope or a familial history of sudden death or those with inducible ventricular fibrillation at electrophysiologic study).

objectives: To assess the efficacy and complications of ICD therapy in patients with Brugada syndrome.

Methods: The indications, efficacy and complications of ICD therapy in all patient with Brugada syndrome who underwent ICD implantation in 12 Israeli centers between 1994 and 2007 were analyzed.

Results: there were 59 patients (53 males, 89.8%) with a mean age of 44.1 years. At diagnosis 42 patients (71.2%) were symptomatic while 17 (28.8%) were asymptomatic. The indications for ICD implantation were: a history of cardiac arrest (n=11, 18.6%), syncope (n=31, 52.5%), inducible VF in symptomatic patients (n=14, 23.7%), and a family history of sudden death (n=3, 0.5%). The overall inducibility rates of VF were 89.2% and 93.3% among the symptomatic and a symptomatic patients, respectively (P=NS). During a follow-up of 4-160 (45+-35) months, all patients (except one who died from cancer) are alive. Five patients (8.4%), all with a history of cardiac arrest, had appropriate ICD discharge. Conversely, none of the patients without prior cardiac arrest had appropriate device therapy during 39+-30 month follow-up. Complications were encountered in 19 patients (32%). Inappropriate shocks occurred in 16 (27.1%) due to lead failure/dislodgment (n=5), T wave oversensing (n=2), device failure (n=1), sinus tachycardia (n=4), and supraventricular tachycardia (n=4). One patient suffered a pneumothorax and another a brachial plexus injury during the implant procedure. One patient suffered a late (2 months) perforation of the right ventricle by the implanted lead. Eleven patients (18.6%) required a reintervention either for infection (n=1) or lead problems (n=10). Eight patients (13.5%) required psychiatric assistance due to complications related to the ICD (mostly inappropriate shocks in 7 patients).

Conclusions: In this Israeli population with Brugada syndrome treated with ICD, appropriate device therapy was limited to cardiac arrest survivors while none of the other patients including those with syncope and/or inducible VF suffered an arrhythmic event. The overall complication rate was high.