Israel Medical Association Journal

Background: Rheumatic mitral stenosis (MS) is a relatively rare diagnosis in the developed countries and its treatment during pregnancy is challenging due to hemodynamic changes. With the demographic changes due to recent waves of immigration an increase in the prevalence of rheumatic heart disease is expected.

Objective: To evaluate maternal and neonatal complications in patients with mitral stenosis.

Methods: During the years 2006–2017, 22 women who underwent 31 pregnancies were followed at the Sheba Medical Center in Israel. We collected on regarding hemodynamic changes and their clinical course. MS was classified as mild, moderate, or severe according to mitral valve area by echocardiography. Maternal and fetal adverse events were evaluated according to severity of MS and compared by Poisson regression modeling.

Results: MS was severe in 7 pregnancies (22.6%), moderate in 9 (29%), and mild in 15 (48.4%). Twenty patients were managed conservatively and 2 underwent a successful percutaneous mitral balloon valvuloplasty (PBMVP) during pregnancy. All pregnancies ended with a liveborn neonate and with no maternal mortality. Peak and mean mitral pressure gradients increased during pregnancy from 13.3 ± 5.3 to 18.6 ± 5.1 mmHg and from 5.9 ± 2.3 to 9.6 ± 3.4 mmHg respectively (P < 0.05). Eight pregnancies (25.8%) were complicated by pulmonary congestion, 2/15 (13.3%) with mild MS, 2/9 (22.2%) with moderate, and 4/7 (57.1%) with severe MS. The adverse event rate was higher among patients with severe MS compared with moderate and mild MS [hazard ratio (HR) 3.15, 95% confidence interval (95%CA) 1.04–9.52 and HR 4.06, 95%CI 1.4–11.19 respectively, P < 0.05]. Nine of 31 deliveries were vaginal; 6 of 22 cesarean sections (27.3%) were performed for cardiac indications.

Conclusions: The number of total adverse events were higher among patients with severe MS. Patients with moderate and mild MS should be treated attentively, but good obstetric and maternal outcome can be expected.

Background: The most common complication after tonsillectomy is bleeding. We investigated whether performing the procedure during the summer or the winter affects the bleeding rate.

Objectives: To investigate whether there is an association between meteorological conditions and the occurrence of post-tonsillectomy hemorrhage (PTH) in the southern Israel Negev region.

Methods: All patients who underwent tonsillectomy from 2001–2013 at the Soroka Medical Center were included. We collected patient demographic data and indications for surgery. Meteorological data were obtained from a weather station operated by the Israel Ministry of Environmental Protection.

Results: Of 4438 patients who underwent tonsillectomy, with or without adenoidectomy, 432 (9.73%) experienced hemorrhage. Patients who suffered from PTH were significantly older: median age 9.61 years vs.4.7 years, P < 0.0001. When comparing patients without PTH to those who bled within 0–3 days after surgery, there was a higher risk for bleeding during the warmer seasons: relative risk (RR) 1.38, 95% confidence interval ([95%CI] 1.07–1.77), RR 1.45 (95%CI 1.17–1.80), and 1.62 (95%CI 1.27–2.06) comparing the winter to spring, summer, and fall, respectively. A statistically significant positive association was also found with the average temperature on the day of surgery. Bleeding more than 3 days after surgery was less likely in summer: RR 0.82, 95%CI 0.69–0.97. We found no association with temperature on the day of surgery and PTH after postoperative day 3.

Conclusions: Seasonality, and to an extent temperature, seem to play only a minor role in PTH.

Background: Recent studies have analyzed risk factors associated with complications after gastric cancer surgery using the Clavien-Dindo classification (CD). However, they have been based on Asian population cohorts (Chinese, Japanese, Korean).

Objectives: To prospectively analyze all post-gastrectomy complications according to severity using CD classification and identify postoperative risk factors and complications.

Methods: We analyzed all gastrectomies for gastric cancer performed 2009–2014. Recorded parameters included demographic data, existing co-morbidities, neo-adjuvant treatment, intra-operative findings, postoperative course, and histologic findings. Postoperative complications were graded using CD classification.

Results: The study comprised 112 patients who underwent gastrectomy. Mean age was 64.8 ± 12.8 years; 53 patients (47%) underwent gastrectomy, 37 (34%) total gastrectomy, and 22 (19%) total extended gastrectomy. All patients had D2 lymphadenectomy. The average number of retrieved lymph nodes was 35 ± 17. Severe complication rate (≥ IIIa) was 14% and mortality rate was 1.8%. In a univariate analysis, age > 65 years; ASA 3 or higher; chronic renal failure; multi-organ resection; and tumor, node, and metastases (TNM) stage ≥ IIIc were found to be significantly associated with CD complication grade > III (P = 0.01, P = 0.05, P = 0.04, P = 0.04, and P = 0.01, respectively). Multivariate regression analysis revealed advanced stage (≥ IIIc) and age > 65 years to be significant independent risk factors (P < 0.05).

Conclusions: Age > 65 and advanced stage (≥ IIIc) were the primary risk factors for complications of grade > III according to the CD classification following gastrectomy for gastric cancer.

Background: During the past decades, beta thalassemia major (TM) and beta thalassemia intermedia (TI) have transformed from a universally fatal disease at a young age into a chronic disease. This advancement is attributed to improved chelation therapy as well as enhanced management strategies, with focused attention on disease and treatment-related complications.

Objectives: To describe characteristics of adults with thalassemia as well as treatment modalities, disease and treatment-related complications, and socioeconomic information of the patients.

Methods: We preformed a retrospective analysis of 14 adult patients > 35 years of age with TM and TI who were treated at our institute, a single center specializing in the care of adult thalassemia patients living in Israel, between the years 2006 and 2016.

Results: The median age of patients was 37 years and most patients were transfusion-dependent. The median number of chelation therapeutic lines was three, and 85.7% of patients were treated at one point by combination chelation therapy. Most patients suffered from at least some form of endocrine dysfunction (n=12), and four patients developed overt heart failure. Of the patients, 85% had completed at least a high school education, 78% were employed, and 64.2% were married.

Conclusions: Prolonged survival of thalassemia patients in recent years has been accompanied by a new set of challenges for both the patients and the treating staff. Further research is warranted to improve both medical management and the socioeconomic well-being of this unique group of adult thalassemia patients.

Background: The closure of an atrial septal defect is procedure that is frequently performed in both adults and children. Currently, the most commonly used devices are the Amplatzer® and Occlutech® Figulla® atrial septal occluders. Studies conducted in adults have shown that these devices all have similar performance efficiency for the closure of secundum atrial septal defects. No study to date has examined their performance in the pediatric population.

Objectives: To evaluate and compare the performance of Amplatzer® and Occlutech® Figulla® atrial septal occluders in the pediatric population.

Methods: A consecutive retrospective study of exclusively pediatric patients who underwent percutaneous closure of atrial septal defect with these devices was conducted at our institute. 

Results: The study comprised 110 children, 50 in the Amplatzer® device group and 60 in the Occlutech® Figulla® device group. The groups had similar demographic and defect characteristics, except for defect size per transesophageal echocardiography (TEE), which was 2.1 mm larger in the Amplatzer® device group (P = 0.02). No adverse events were recorded in either of the study groups. Complete defect closure at 12 months follow-up (procedural success) was achieved in all but one of the patients in the Amplatzer® group and all but two in the Figulla® group (P = 1). The residual shunt rates of fenestrated defects were similar in the two groups. 

Conclusions: For children with an isolated secundum atrial septal defect, percutaneous closure is equally safe and effective with either Amplatzer® or Occlutech® Figulla® devices.

Background: Percutaneous dilatational tracheostomy (PDT) has become a standard technique for critically ill patients who require long-term ventilation. The most common early post-operative complication is bleeding related to anatomical variation in vasculature. The procedure is performed at the patient's bedside unless this is deemed unsafe and then the accepted alternative is open tracheostomy in the operating room. 

Objectives: To evaluate the use of pre-procedural ultrasound to aid in the decision of whether PDT in critical care patients should be performed at the patient's bedside or by open surgical tracheostomy.

Methods: Patients were jointly evaluated by a critical care physician and a head and neck surgeon. Based on this evaluation, the method of tracheostomy was determined. Subsequently, pre-procedural ultrasound examination of the anterior neck was performed. The final decision whether to perform PDT or open surgical tracheostomy was based on the ultrasound findings. Changes in management decisions following ultrasound were recorded. 

Results: We included 36 patients in this prospective study. Following ultrasound examination, the management decision was changed in nine patients (25%).

Conclusions: Pre-procedural ultrasound for critically ill patients undergoing tracheostomy can influence management decisions regarding the performance of tracheostomy. 

 

Background: In recent years cardioversion of atrial fibrillation has become a routine procedure, enabling symptomatic functional improvement in most cases. However, some patients develop complications after cardioversion. Identifying these individuals is an important step toward improving patient outcome.

Objectives: To characterize those patients who may not benefit from cardioversion or who may develop complications following cardioversion.

Methods: We retrospectively analyzed 186 episodes of cardioversion in 163 patients with atrial fibrillation who were admitted to our cardiology department between 2008 and 2013 based on their clinical and echocardiographic data. Patients were divided into two groups: those with uncomplicated cardioversion, and those who developed complications after cardioversion.

Results: Of the 186 episodes, cardioversion was done in 112 men (60%) and 74 women (40%), P < 0.00001. Complications after cardioversion occurred in 25 patients (13%). These patients were generally older (72 vs. 65 years, P < 0.01), were more often diabetic (52% vs. 27%, P = 0.005), had undergone emergency cardioversion (64% vs. 40%, P = 0.01), had left ventricular hypertrophy (left ventricular mass 260 vs. 218 g, P = 0.01), had larger left atrium (left atrial volume 128 vs. 102 ml, P < 0.009), and more often died from complications of cardioversion (48% vs. 16%). They had significant mitral regurgitation (20% vs. 4%, P = 0.03) and higher pulmonary artery pressure (50 vs. 42 mm Hg, P < 0.02).

Conclusions: People with complications after cardioversion tend to be older, are more often diabetic and more often have severe mitral regurgitation. In these patients, the decision to perform cardioversion should consider the possibility of complications.

Background: Burn scar reconstruction is extremely challenging, even for the most proficient reconstructive surgeon. Within the arsenal of tools at the plastic surgeon’s disposal, tissue expansion provides an efficient modality for reconstruction despite the reported complication rates. 

Objectives: To critically review our experience with tissue expansion for burn scar reconstruction, comparing particularly the adult and pediatric populations.

Methods: We conducted a retrospective study of the outcomes of patients who underwent burn scar reconstruction with tissue expansion at Hadassah Medical Center between January 2003 and July 2012. The data included patient age, anatomical site of expansion, number of procedures, and associated complications. The outcomes of the above-mentioned populations were also compared with those in a control group of patients undergoing reconstruction with tissue expansion for indications other than burn scars. 

Results: Sixty-seven tissue expansion procedures were carried out in 50 patients, 42 in the pediatric population (< 16 years of age) and 25 in the adult population. Complications were observed in 10 of the 42 pediatric procedures (23.8%) and in 3 of the 25 adult procedures (12%). This difference was found to be statistically significant. When the complication rate for each population was compared to its control group (tissue expansion for indications other than burn scar reconstruction, such as reconstruction for motor vehicle accident scarring, congenital nevi, or vascular malformations), no statistically significant difference was found between them (complication rates 19.8% and 12.5%, respectively). Furthermore, there was no statistically significant difference in complication rates between the different anatomical areas of expansion within both populations undergoing burn scar reconstruction. Most of the complicated cases completed successful reconstruction.

Conclusions: Tissue expansion is a useful surgical tool in post-burn scar reconstruction, both in the adult and pediatric populations and in all anatomic sites, despite consistently high complication rates, especially in the pediatric population. This complication rate is not higher than in patients undergoing tissue expansion for indications other than burn scar reconstruction. 

Background: In March 2009 the pandemic influenza A (H1N1) strain was identified. The disease initially appeared to be accompanied by complications and high mortality rates. It became an endemic virus during the influenza season in our region, along with the classical seasonal H3N2.

Objectives: To identify the burden of pandemic influenza, its effect in pediatric patients, and complicated hospitalizations, compared to seasonal influenza years after the pandemic.

Methods: A retrospective observational study was conducted at a tertiary hospital. Data were collected from the medical records of all children who were hospitalized from April 2009 to 2011 with laboratory-confirmed influenza.

Results: Of 191 patients with influenza, 100 had the 2009 pandemic influenza, 62 had seasonal influenza, and 29 had H1N1 in 2010–2011. Patients with the 2009 H1N1 were characterized by older age, more co-morbidity conditions and more symptoms including fever, cough and rhinitis on admission. No significant differences in outcomes between the groups were recorded. Of patients hospitalized with pandemic influenza in 2009, 28% had complicated hospitalizations, compared with 17.7% of patients hospitalized with seasonal influenza in 2010–11. Children with pandemic influenza received more oseltamivir (Tamiflu®) (94% vs. 19.4%, P < 0.001) and more antibiotics than the other groups.

Conclusions: The type of influenza had no effect on outcome. There were no significant differences between groups in the percentages of in-hospital mortality, admission to intensive care units, prolonged hospitalization (> 9 days), or the development of complications during hospitalization.

 

Background: Patients with type 1 diabetes (T1D) are exempt from conscript military service, but some volunteer for national service. 

Objectives: To evaluate the effect of national service (military or civil) on metabolic control and incidence of acute diabetes complications in young adults with T1D. 

Methods: Clinical and laboratory data of 145 T1D patients were retrieved from medical records. The cohort comprised 76 patients volunteering for national service and 69 non-volunteers. Outcome measures were HbA1c, body mass index-standard deviation scores (BMI-SDS), insulin dosage, and occurrence of severe hypoglycemia or diabetic ketoacidosis (DKA). 

Results: Metabolic control was similar in volunteers and non-volunteers: mean HbA1c at various time points was: 7.83 ± 1.52% vs. 8.07% ± 1.63 one year before enlistment age, 7.89 ± 1.36% vs. 7.93 ± 1.42% at enlistment age, 7.81 ± 1.28% vs. 8.00 ± 1.22% one year thereafter, 7.68 ± 0.88% vs. 7.82 ± 1.33% two years thereafter, and 7.62 ± 0.80% vs. 7.79 ± 1.19% three years thereafter. There were no significant changes in HbA1c from baseline throughout follow-up. BMI and insulin requirements were similar and remained unchanged in volunteers and controls: mean BMI-SDS one year before enlistment age was 0.23 ± 0.83 vs. 0.29 ± 0.95, at enlistment age 0.19 ± 0.87 vs. 0.25 ± 0.98, one year thereafter 0.25 ± 0.82 vs. 0.20 ± 0.96, two years thereafter 0.10 ± 0.86 vs. 0.15 ± 0.94, and three years thereafter 0.20 ± 0.87 vs. 0.16 ± 0.96. Mean insulin dose in U/kg/day one year before enlistment age was 0.90 ± 0.23 vs. 0.90 ± 0.37, at enlistment age 0.90 ± 0.28 vs. 0.93 ± 0.33, one year thereafter 0.86 ± 0.24 vs. 0.95 ± 0.33, two years thereafter 0.86 ± 0.21 vs. 0.86 ± 0.29, and three years thereafter 0.87 ± 0.23 vs. 0.86 ± 0.28. There were no episodes of severe hypoglycemia or DKA in either group. 

Conclusions: Our data indicate that during voluntary national service young adults with T1D maintain metabolic control similar to that of non-volunteers. 

 

Background: The search for the presence of vegetations in patients with suspected infective endocarditis is a major indication for trans-esophageal echocardiographic (TEE) examinations. Advances in harmonic imaging and ongoing improvement in modern echocardiographic systems allow adequate quality of diagnostic images in most patients.

Objectives: To investigate whether TEE examinations are always necessary for the assessment of patients with suspected infective endocarditis. 

Methods: During 2012–2014 230 trans-thoracic echo (TTE) exams in patients with suspected infective endocarditis were performed at our center. Demographic, epidemiological, clinical and echocardiographic data were collected and analyzed, and the final clinical diagnosis and outcome were determined. 

Results: Of 230 patients, 24 had definite infective endocarditis by clinical assessment. TEE examination was undertaken in 76 of the 230 patients based on the clinical decision of the attending physician. All TTE exams were classified as: (i) positive, i.e., vegetations present; (ii) clearly negative; or (iii) non-conclusive. Of the 92 with clearly negative TTE exams, 20 underwent TEE and all were negative. All clearly negative patients had native valves, adequate quality images, and in all 92 the final diagnosis was not infective endocarditis. Thus, the negative predictive value of a clearly negative TTE examination was 100%.

Conclusions: In patients with native cardiac valves referred for evaluation for infective endocarditis, an adequate quality TTE with clearly negative examination may be sufficient for the diagnosis.