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עמוד בית
Sun, 19.05.24

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March 2014
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. 

November 2013
N. Sarid, R. Eshel, E. Rahamim, M. Carmiel, I. Kirgner, M. Shpringer, S. Trestman, R. Marilus, C. Perry, A. Polliack, E. Naparstek and Y. Herishanu

Background: Janus kinase-2 (JAK2) is mutated in a high proportion of patients with polycythemia vera and in a smaller number with essential thrombocythemia and primary myelofibrosis. Mutated JAK2 is an important diagnostic marker for myeloproliferative neoplasm (MPN) and may also play a major role in the pathogenesis of MPN.

Objectives: To evaluate the prevalence of mutated JAK2 (JAK2-V617F) among patients with major intraabdominal vein thrombosis who had normal blood counts at diagnosis of the initial event.

Methods: The medical records of patients who presented with a major intraabdominal venous thrombosis and normal peripheral blood counts were obtained. JAK2-V617F mutation status was determined by real-time polymerase chain reaction.

Results: Twenty-two patients were available for this analysis and 9 (41%) were found to have JAK2-V617F. Patients with positive JAK2-V617F were younger and had more frequent clinical splenomegaly than those with wild-type JAK2.

Conclusions: A high proportion of patients presenting with “idiopathic” major intraabdominal vein thrombosis and normal blood counts carry JAK2-V617F. We recommend searching for the mutation in this clinical setting to detect patients with occult MPN.

August 2013
R. Cooper-Kazaz
 Background: Many tertiary hospitals provide psychiatric services that treat diverse clinical situations. Most patients referred to these services following a serious suicide attempt have psychiatric diagnoses, but their unique characteristics and needs are not known.

Objectives: To examine the files of patients hospitalized in a tertiary hospital in Israel following a serious suicide attempt. Their mental conditions were determined and their unique demographic and clinical characteristics and needs compared to the other patients examined by the psychiatric service.

Methods: The study focused on 49 consecutive patients admitted after performing a life-threatening suicide attempt. They were compared to 389 non-suicidal patients assessed by the same psychiatric service during one year.

Results: Nearly half the patients hospitalized following a serious suicide attempt had only an axis II diagnosis (personality disorder). Non-violent methods of suicide were used predominantly by females, and violent methods mainly by males. All suicide attempts by Muslims used violent methods, while less than half the attempts by Jews were violent. Compared to the non-suicidal patients, the suicide-attempters group was younger, had greater representation of Jewish females and Muslim males. Compared to the non-suicidal patients, these patients required more intense psychiatric care, earlier commencement of treatment in the course of hospitalization, more psychiatric visits and treatment hours, and more referrals for further care. Several risk factors appear to be associated with a need for more intense in-hospital care and a greater need for referral: male gender, religion, method of suicide attempt (violent vs. non-violent), and the existence of a psychiatric diagnosis.

Conclusions: Suicide-attempt patients who are in need of hospitalization for further medical treatment have unique clinical characteristics and require more intense treatment provided by the Consultation-Liaison Unit. 

 

E. Nachum, A. Shinfeld, A. Kogan, S. Preisman, S. Levin and E. Raanani
 Background: Patients with Marfan syndrome are referred for cardiac surgery due to root aneurysm with or without aortic valve regurgitation. Because these patients are young and frequently present with normal-appearing aortic cusps, valve sparing is often recommended. However, due to the genetic nature of the disease, the durability of such surgery remains uncertain.

Methods:  Between February 2004 and June 2012, 100 patients in our department suffering from aortic aneurysm with aortic valve regurgitation underwent elective aortic valve-sparing surgery. Of them, 30 had Marfan syndrome, were significantly younger (30 ± 13 vs. 53 ± 16 years), and had a higher percentage of root aneurysm, compared with ascending aorta aneurysm in their non-Marfan counterparts. We evaluated the safety, durability, clinical and echocardiographic mid-term results of these patients.

Results: While no early deaths were reported in either group, there were a few major early complications in both groups. At follow-up (ranging up to 8 years with a mean of 34 ± 26 months) there were no late deaths, and few major late complications in the Marfan group. Altogether, 96% and 78% of the patients were in New York Heart Association functional class I-II in the Marfan and non-Marfan groups respectively. None of the Marfan patients needed reoperation on the aortic valve. Freedom from recurrent aortic valve regurgitation > 3+ was 94% in the Marfan patients.

Conclusions: Aortic valve-sparing surgery in Marfan symdrome patients is safe and yields good mid-term clinical outcomes.

July 2013
D. Merims, H. Nahari, G. Ben-Ari, S. Jamal, C. Vigder and Y. Ben-Israel
 Background: Wandering is a common phenomenon among patients with dementia. While traditionally considered to be a behavioral problem, it also includes fundamental aspects of motor performance (e.g., gait and falls).

Objectives: To examine the difference in motor function and behavioral symptoms between patients with severe dementia who wander and those who do not.

Methods: We conducted a retrospective study reviewing the medical records of 72 patients with severe dementia, all residents of a dementia special care unit. Motor and behavioral aspects were compared between "wanderers" and “non-wanderers.”

Results: No difference was found in motor performance including the occurrence of falls between the wanderers and non-wanderers. A significant difference was found in aggressiveness and sleep disturbances, which were more frequent among the wanderers. There was no preference to wandering at a certain period of the day among the patients with sleep disturbances who wander.

Conclusions: In a protected environment wandering is not a risk factor for falls. Sleep disturbances and wandering co-occur, but there is no circumstantial association between the two symptoms.

June 2013
G. Barkai, A. Barzilai, E. Mendelson, M. Tepperberg-Oikawa, D. Ari-Even Roth and J. Kuint
 Background: Congenital cytomegalovirus (C-CMV) infection affects 0.4–2% of newborn infants in Israel, most of whom are asymptomatic. Of these, 10–20% will subsequently develop hearing impairment and might have benefitted from early detection by neonatal screening.

Objectives: To retrospectively analyze the results of a screening program for C-CMV performed at the Sheba Medical Center, Tel Hashomer, during a 1 year period, using real-time polymerase chain reaction (rt-PCR) from umbilical cord blood.

Methods: CMV DNA was detected by rt-PCR performed on infants’ cord blood. C-CMV was confirmed by urine culture (Shell-vial). All confirmed cases were further investigated for C-CMV manifestations by head ultrasound, complete blood count, liver enzyme measurement, ophthalmology examination and hearing investigation.

Results: During the period 1 June 2009 to 31 May 2010, 11,022 infants were born at the Sheba Medical Center, of whom 8105 (74%) were screened. Twenty-three (0.28%) were positive for CMV and 22 of them (96%) were confirmed by urine culture. Two additional infants, who had not been screened, were detected after clinical suspicion. All 24 infants were further investigated, and 3 (12.5%) had central nervous system involvement (including hearing impairment) and were offered intravenous ganciclovir for 6 weeks. Eighteen (82%) infants would not otherwise have been diagnosed.

Conclusions: The relatively low incidence of C-CMV detected in our screening program probably reflects the low sensitivity of cord blood screening. Nevertheless, this screening program reliably detected a non-negligible number of infants who could benefit from early detection. Other screening methods using saliva should be investigated further.

 

E.D. Amster, S.S. Fertig, U. Baharal, S. Linn, M.S. Green, Z. Lencovsky and R.S. Carel
 Background: From 2 to 5 December 2010, Israel experienced the most severe forest fire in its history, resulting in the deaths of 44 rescue workers. Little research exists on the health risks to emergency responders during forest fires, and there is no published research to date on occupational health among firefighters in Israel.

Objectives: To describe the exposures experienced by emergency responders to smoke, fire retardants and stress; the utilization of protective equipment; and the frequency of corresponding symptoms during and following the Carmel Forest fire.

Methods: A cohort of 204 firefighters and 68 police who took part in rescue and fire-abating activities during the Carmel Forest fire were recruited from a representative sample of participating stations throughout the country and interviewed regarding their activities during the fire and their coinciding symptoms. Unpaired two-sample t-test compared mean exposures and symptom frequency for firefighters and police. Chi-square estimates of OR and 95% CI are provided for odds of reporting symptoms, incurring injury or being hospitalized for various risk factors.

Results: Of the study participants, 87% reported having at least one symptom during rescue work at the Carmel Forest fire, with eye irritation (77%) and fatigue (71%) being the most common. Occupational stress was extremely high during the fire; the average length of time working without rest was 18.4 hours among firefighters.

Conclusions: Firefighters and police were exposed to smoke and occupational stress for prolonged periods during the fire. Further research is needed on the residual health effects from exposure to forest fires among emergency responders, and to identify areas for improvement in health preparedness.  

March 2013
A.M. Madsen, R. Pope, A. Samuels and C.Z. Margolis
 Background: Due to the war in Gaza in 2009, Ben-Gurion University’s Medical School for International Health with a student body of 165 international multicultural students canceled a week of classes. Third-year students continued clerkships voluntarily and fourth-year students returned to Israel before departing for clerkship in a developing country. A debriefing session was held for the entire school.

Objectives: To assess the academic and psychological effects of political conflict on students.

Methods: We asked all students to fill out an anonymous Google electronic survey describing their experience during the war and evaluating the debriefing. A team of students and administrators reviewed the responses.

Results: Sixty-six students (40% of the school) responded (first year 26%, second year 39%, third year 24%, fourth year 8%, taking time off 3%, age 23–40 years old). Eighty-three percent were in Israel for some portion of the war and 34% attended the debriefing. Factors that influenced individuals’ decision to return/stay in the war zone were primarily of an academic and financial nature. Other factors included family pressure, information from peers and information from the administration. Many reported psychological difficulties during the war rather than physical danger, describing it as “draining” and that it was difficult to concentrate while studying. As foreigners, many felt their role was undefined. Although there is wide variation in the war’s effect on daily activities and emotional well-being during that time, the majority (73%) reported minimal residual effects.

Conclusions: This study lends insight to the way students cope during conflict and highlights academic issues during a war. Open and frequent communication and emphasis on the school as a community were most important to students.

 

December 2012
Y. Shacham, E.Y. Birati, O. Rogovski, Y. Cogan, G. Keren and A. Roth

Background: The 20%–60% rate of acute anterior myocardial infarction (AAMI) patients with concomitant left ventricular thrombus (LVT) formation dropped to 10–20% when thrombolysis and primary percutaneous coronary intervention (PPCI) were introduced.

Objective: To test our hypothesis that prolonged anticoagulation post-PPCI will lower the LVT incidence even further.

Methods: Included in this study were all 296 inpatients with ST elevation AAMI who were treated with PPCI (from January 2006 to December 2009). Treatment included heparin anticoagulation (48 hours) followed by adjusted doses of low molecular weight heparin (3 more days). All patients underwent cardiac echocardiography on admission and at discharge. LVT and bleeding complications were reviewed and compared.

Results: LVT formation was present on the first echocardiogram in 6/296 patients. Another 8/289 patients displayed LVT only on their second echocardiogram (4.7%, 14/296). LVT patients had significantly lower LV ejection fractions than non-LVT patients at admission (P < 0.003) and at discharge (P < 0.001), and longer time to reperfusion (P = 0.168). All patients were epidemiologically and clinically similar. There were 6 bleeding episodes that required blood transfusion and 11 episodes of minor bleeding.

Conclusions: Five days of continuous anticoagulation therapy post-PPCI in inpatients with AAMI is associated with low LVT occurrence without remarkably increasing bleeding events.
 

O. Dolkart, W. Khoury, S. Avital, R. Flaishon and A.A Weinbroum

Background: Carbon dioxide is the most widely used gas to establish pneumoperitoneum during laparoscopic surgery. Gastrointestinal trauma may occur during the peritoneal insufflation or during the operative phase itself. Early diagnosis of these injuries is critical.

Objectives: To assess changes in end-tidal carbon dioxide (ETCO2) following gastric perforation during pneumoperitoneum in the rat.

Methods: Wistar rats were anesthetized, tracheotomized and mechanically ventilated with fixed minute volume. Each animal underwent a 1 cm abdominal longitudinal incision. A 0.3 x 0.3 cm cross-incision of the stomach was performed in the perforation group but not in the controls (n=10/group), and the abdomen was closed in both groups. After stabilization, CO2-induced pneumoperitoneum was established at 0, 5, 8 and 12 mmHg for 20 min periods consecutively, each followed by complete pressure relief for 5 minutes.

Results: Ventilatory pressure increased in both groups when pneumoperitoneal pressure ≥ 5 mmHg was applied, but more so in the perforated stomach group (P = 0.003). ETCO2 increased in both groups during the experiment, but less so in the perforated group (P = 0.04). It then returned to near baseline values during pressure annulation in all perforated animals but only in the 0 and 5 mmHg periods in the controls.

Conclusions: When subjected to pneumoperitoneum, ETCO2 was lower in rats with a perforated stomach than in those with an intact stomach. An abrupt decrease in ETCO2 during laparoscopy may signal gastric perforation.
 

E. Ben-Chetrit, C. Chen-Shuali, E. Zimran, G. Munter and G. Nesher

Background: Frequent readmissions significantly contribute to health care costs as well as work load in internal medicine wards.

Objective: To develop a simple scoring method that includes basic demographic and medical characteristics of  elderly patients in internal medicine wards, which would allow prediction of readmission within 3 months of discharge.

Methods: We conducted a retrospective observational study of 496 hospitalized patients using data collected from discharge letters in the computerized archives. Univariate and multivariate logistic regression analyses were performed and factors that were significantly associated with readmission were selected to construct a scoring tool. Validity was assessed in a cohort of 200 patients.

Results: During a 2 year follow-up 292 patients were readmitted at least once within 3 months of discharge. Age 80 or older, any degree of impaired cognition, nursing home residence, congestive heart failure, and creatinine level > 1.5 mg/dl were found to be strong predictors of readmission. The presence of each variable was scored as 1. A score of 3 or higher in the derivation and validation cohorts corresponded with a positive predictive value of 80% and 67%, respectively, when evaluating the risk of rehospitalization.

Conclusions: We propose a practical, readily available five-item scoring tool that allows prediction of most unplanned readmissions within 3 months. The strength of this scoring tool, as compared with previously published scores, is its simplicity and straightforwardness.
 

September 2012
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