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עמוד בית
Mon, 22.07.24

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March 2014
Hasan Kais MD, Yehuda Hershkovitz MD, Judith Sandbank MD and Ariel Halevy
Bernardo Melamud, Yoav Lurie, Eran Goldin, Izhar Levi and Yaacov Esayag
Avraham Unterman, Anat Achiron, Itai Gat, Oren Tavor and Amitai Ziv
 Background: Physicians are often insufficiently trained in bedside teaching and mentoring skills. Objectives: To develop, implement and assess a simulation-based training program designed to improve clinical teaching among physicians.

Methods: We developed a one-day tutor training program based on six simulated scenarios with video-based debriefing. The program's efficacy was assessed using questionnaires completed by the participating physicians and their students. Main outcome measures were self-perceived teaching skills at baseline, after participation in the program, and following completion of the tutor role. Secondary outcome measures were the students' perceptions regarding their tutor skills.

Results: Thirty-two physicians (mean age 35.5, 56% females) participated in the program. Self-assessment questionnaires indicated statistically significant improvement following the program in 13 of 20 measures of teaching skills. Additional improvement was observed upon completion of the tutor role, leading to significant improvement in 19 of the 20 measures. Questionnaires completed by their students indicated higher scores in all parameters as compared to a matched control group of tutors who did not participate in the program, though not statistically significant. Most participants stated that the program enhanced their teaching skills (88%), they implement program-acquired skills when teaching students (79%), and they would recommend it to their peers (100%). Satisfaction was similar among participants with and without previous teaching experience.

Conclusions: A novel one-day simulation-based tutor training program was developed and implemented with encouraging results regarding its potential to improve clinical teaching and mentoring skills. 

Lela Migirov, Gahl Greenberg, Ana Eyal and Michael Wolf
Cholesteatoma is an epidermoid cyst that is characterized by independent and progressive growth with destruction of adjacent tissues, especially the bone tissue, and tendency to recurrence. Treatment of cholesteatoma is essentially surgical. The choice of surgical technique depends on the extension of the disease, and preoperative otoscopic and radiological findings can be decisive in planning the optimal surgical approach. Cholesteatoma confined to the middle ear cavity and its extensions can be eradicated by use of the minimally invasive transmeatal endoscopic approach. Computerized tomography of the temporal bones fails to distinguish a cholesteatoma from the inflammatory tissue, granulations, fibrosis or mucoid secretions in 20–70% of cases showing opacification of the middle ear and mastoid. Using the turbo-spin echo (TSE), also known as non-echo planar imaging (non-EPI) diffusion-weighted (DW) magnetic resonance imaging, cholesteatoma can be distinguished from other tissues and from mucosal reactions in the middle ear and mastoid. Current MRI sequences can support the clinical diagnosis of cholesteatoma and ascertain the extent of the disease more readily than CT scans. The size determined by the TSE/HASTE (half-Fourier acquisition single-shot turbo-spin echo) DW sequences correlated well with intraoperative findings, with error margins lying within 1 mm. Our experience with more than 150 endoscopic surgeries showed that lesions smaller than 8 mm confined to the middle ear and its extension, as depicted by the non-EPI images, can be managed with transmeatal endoscopic approach solely. We call upon our otolaryngologist and radiologist colleagues to use the newest MRI modalities in the preoperative evaluation of candidates for cholesteatoma surgery.

February 2014
Salman Zarka, Masad Barhoum, Tarif Bader, Itay Zoaretz, Elon Glassberg, Oscar Embon and Yitshak Kreiss
Yoav Rosenthal, Amir Arami, Yona Kosashvili, Nir Cohen, Eli Sidon and Steven Velkes
Background: Bisphosphonates reduce the overall risk of fractures among patients with osteoporosis, and this beneficial effect is long-lasting. However, since bisphosphonates inhibit bone remodeling, they may enhance the formation and propagation of micro-cracks over time and patients may therefore be prone to atypical fatigue fractures, mainly in the subtrochanteric region and femoral shaft.

Objectives: To present two cases of subtrochanteric fractures related to bisphosphonate treatment and review of the current literature.

Conclusions: Despite the overall beneficial effect of bisphosphonates, further research is required to prevent this significant complication. 

Noam Rosen, Roy Gigi, Amir Haim, Moshe Salai and Ofir Chechik
Background: Above-the-knee amputations (AKA) and below-the-knee amputations (BKA) are commonly indicated in patients with ischemia, extensive tissue loss, or infection. AKA were previously reported to have better wound-healing rates but poorer rehabilitation rates than BKA.

Objectives: To compare the outcomes of AKA and BKA and to identify risk factors for poor outcome following leg amputation.

Methods: This retrospective cohort study comprised 188 consecutive patients (mean age 72 years, range 25–103, 71% males) who underwent 198 amputations (91 AKA, 107 BKA, 10 bilateral procedures) between February 2007 and May 2010. Included were male and female adults who underwent amputations for ischemic, infected or gangrenotic foot. Excluded were patients whose surgery was performed for other indications (trauma, tumors). Mortality and reoperations (wound debridement or need for conversion to a higher level of amputation) were evaluated as outcomes. Patient- and surgery-related risk factors were studied in relation to these primary outcomes.

Results: The risk factors for mortality were dementia [hazard ratio (HR) 2.769], non-ambulatory status preoperatively (HR 2.281), heart failure (HR 2.013) and renal failure (HR 1.87). Resistant bacterial infection (HR 3.083) emerged as a risk factor for reoperation. Neither AKA nor BKA was found to be an independent predictor of mortality or reoperation.

Conclusions: Both AKA and BKA are associated with very high mortality rates. Mortality is most probably related to serious comorbidities (renal and heart disease) and to reduced functional status and dementia. Resistant bacterial infections are associated with high rates of reoperation. The risk factors identified can aid surgeons and patients to better anticipate and possibly prevent severe complications.

Arnon D. Cohen MD MPH PhD, Israel D. Andrews MD, Evgeny Medvedovsky MD, Roni Peleg MD, and Daniel A.Vardy MD MSc
Background: Localized itch of non-pruritoceptive origin is often neuropathic and may be referred to as neuropathic itch syndrome.

Objectives: To describe the results of nerve conduction studies in patients with anogenital pruritus, brachioradial pruritus and scalp dysesthesia, and compare these sites to typical sites of lichen simplex chronicus (LSC).

Methods: The study summarizes previously published data combined with unpublished data of patients with scalp dysesthesia. Nerve conduction studies included measurements of distal sensory and motor latency, conduction velocity and F-responses.

Results: A neuropathy was demonstrated in 29 of 36 patients with anogenital pruritus (80.5%), 8/14 with brachioradial pruritus (57.1%) and 4/9 with scalp dysesthesia (44.4%). The typical sites overlapped with some but not all LSC sites.

Conclusions: A considerable proportion of patients with brachioradial pruritus, anogenital pruritus and scalp dysesthesia have abnormal nerve conduction findings, suggesting a neuropathic origin. The skin sites overlap with some common LSC sites, suggesting that in some cases of LSC a local neuropathy could be a possible cause.

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