Israel Medical Association Journal

Background: Out-of-hospital cardiac arrest (OHCA) poses a considerable health burden and offers poor prognosis. Information about OHCA in Israel is scarce.

Objectives: To present a pilot registry of prehospital and in-hospital characteristics of patients with OHCA.

Methods: A descriptive study was conducted of consecutive adult patients with OHCA treated in the field by Magen David Adom (MDA) paramedics and treated at the Sheba Medical Center.

Results: The study included 99 patients with OHCA who were brought by MDA to the Sheba Medical Center. The median age was 79 years (IQR 67–89(, 61% were male. In total, 69% of the events occurred at home, 16% at nursing facilities, 10% on streets, and 2% in public buildings. Most events (80%) were witnessed. Bystander-basic life support (BLS) was administered to 28%, 45% received BLS from an emergency medical service first responder. Automated external defibrillation was used in 40% of cases. In our cohort, 51 patients (51%) survived initial treatment in the emergency department (ED) and were hospitalized. Electrocardiography at arrival demonstrated ST-elevation in 22% of cases. Coronary angiography was performed in 19% (n=19) of patients, and 12% (n=12) underwent percutaneous intervention. Eventually, 26 patients (26%) survived to discharge with a Cerebral performance categories were as follows: 13% (n=13) with good cerebral performance, 10% (n=10) with moderate disability, and 3% (n=3) with severe disability or unconscious.

Conclusions: Among those admitted after surviving ED resuscitation, half survived to discharge. Most of those who survived hospitalization and were discharged with good neurological performance were young males.

We report a case of true syncope with documented vasovagal syncope which occurred at the time of an alarm due to missile attack. This case shows a severe vasovagal reaction to emotional stress and fear.

The vasovagal response (neurocardiogenic response) involves an abnormal interplay of bradycardia and paradoxical vasodilation. This intense vagal stimulation can result in syncope, which may have dramatic consequences, especially in elderly patients. Such an event was triggered during a missile alarm in an 80-year-old man. To the best of our knowledge, no similar case has been previously reported [1,2]. A sinus pause is a temporary cessation of electrical impulses from the sinus node, resulting in a brief but complete halt of heart contraction. The excessive vagal input diminishes sinus node automaticity, potentially causing pauses that vary in duration from seconds to even longer periods, depending on individual susceptibility and the length and intensity of the vagal response.

Although typically transient, sinus pauses may also result in significant symptoms like lightheadedness or syncope. In severe cases, they can compromise cerebral perfusion, necessitating immediate intervention. Recognizing the risk of sinus pause in susceptible patients is essential for preventing potential complications, particularly during procedures that may provoke a strong vasovagal reaction.

Background: According to Hamas sources, many Israeli hostages in Gaza were killed by indiscriminate Israeli airstrikes, together with a large number of Palestinian citizens.

Objectives: To verify whether the estimated death rate of Israeli hostages was similar to the estimated death rate of Gaza citizens from these acts of war.

Methods: We used two estimates of hostage death rates, one obtained from Israeli intelligence sources, and one published by a Hamas spokesperson. We used the Palestinian casualty rates published by the Palestinian Ministry of Health. We compared death rates using Fisher's exact test.

Results: By 30 December 2023, the rate of Israeli hostage death was 23/238 (9.7%) according to Israeli intelligence sources, and 60/238 (25.2%) according to Hamas. Both figures are strikingly and significantly higher than the death rate among Palestinians, estimated to be 19,667/2.2 million (0.89%) by 19 December 2023 (P < 0.0001).

Conclusions: Israeli airstrikes as the cause of death of Israeli hostages are implausible unless they were specifically exposed to these strikes more than Palestinian citizens.

The cause of death for Pharaoh Tutankhamun (ca. 1330–1324 BCE) is still unknown despite the advancement in modern paleopathology and the introduction of computed tomography mummy examination and modern molecular pathology, including PCR-based gene analysis. Many speculations regarding his unexpected death have been published, including crush injury, infectious diseases such as malaria, and hereditary disease. We discuss for the first time all these events that could have ultimately caused Tutankhamun's sudden death, particularly sickle cell disease, which can cause osteonecrosis and lead to walking disability, bone deformities, and fragility. Malaria-associated tropical splenomegaly, as an acquired infectious disease, and the crush injury, which represents an acute event, were verified by a left distal femur fracture that contributed to splenic rupture as a major fatal event. We highlight important issues that can provide clinicians and clinical care practitioners with a broad vision while analyzing such cases.

Background: A limited program for kidney donation from uncontrolled donation after cardiocirculatory determination of death (uDCDD) was implemented at four hospitals in Israel in close cooperation with Magen David Adom (MDA), the national emergency medical service.

Objectives: To assess the outcome of transplantations performed between January 2017 and June 2022.

Methods: Donor data included age, sex, and cause of death. Recipient data included age, sex, and yearly serum creatinine levels. A retrospective study of out-of-hospital cardiac arrest cases treated by MDA during 2021 were analyzed to assess their compatibility as potential uDCDD donors.

Results: In total, 49 potential donors were referred to hospitals by MDA. Consent was obtained in 40 cases (83%), organ retrieval was performed in 28 cases, and 40 kidneys were transplanted from 21 donors (75% retrieval rate). At 1-year follow-up, 36 recipients had a functioning graft (4 returned to dialysis) and mean serum creatinine 1.59 ± 0.92 mg% (90% graft survival). Outcome after transplantation showed serum creatinine levels (mg%) at 2 years 1.41 ± 0.83, n=26; 3 years 1.48 ± 0.99, n=16; 4 years 1.07 ± 1.06, n=7; and 5 years 1.12 ± 0.31, n=5. One patient died of multiple myeloma at 3 years. The MDA audit revealed an unutilized pool of 125 potential cases, 90 of whom were transported to hospitals and 35 were declared dead at the scene.

Conclusions: Transplant outcomes were encouraging, suggesting that more intensive implementation of the program may increase the number of kidneys transplanted, thus shortening recipient waiting lists.

Background: Changes accommodating requirements of religious authorities in Israel resulted in the Brain and Respiratory Death Determination Law (BRDDL), which came into effect in 2009. These included considering patient wishes regarding the brain respiratory death determination (BRDD), mandatory performance of apnea and ancillary testing, establishment of an accreditation committee, and accreditation required for physicians performing BRDD.

Objectives: To assess the impact of the legislation from 2010–2019.

Methods: Data collected included the number of formal BRDDs and accredited physicians. Obstacles to declaring brain death and interventions applied were identified.

Results: Obstacles included lack of trained physicians to perform BRDD and interpret ancillary test results, inability to perform apnea or ancillary testing, and non-approach to next-of-kin objecting to BRDD. Interventions included physician training courses, additional ancillary test options, and legal interpretation of patient wishes for non-determination of BRD. As a result, the number of non-determinations related to next-of-kin objecting decreased (26 in 2010 to 5 in 2019), inability to perform apnea or ancillary testing decreased (33 in 2010 to 2 in 2019), and number of physicians receiving accreditation increased (210 in 2010 to 456 in 2019). Last, the consent rate for organ donation increased from 49% to 60% in 2019.

Conclusions: The initial decrease in BRDDs has reversed, thus enabling more approaches for organ donation. The increased consent rate may reflect in part the support of the rabbinate and confidence of the general public that BRDD is performed and monitored according to strict criteria.

Background: The 2019 severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic continued into 2020, and the coronavirus disease-2019 (COVID-19) associated death toll increased.

Objectives: To analyze COVID-19 death rates in European countries or regions to determine whether there was a significant association between bacillus Calmette-Guérin (BCG) vaccination policy and lower rates of COVID-19 related deaths.

Methods: Certain Northern European countries or regions had low death rates regardless of BCG policy. The authors assumed the consumption of foods containing salmiak (NH₄Cl) was a common and peculiar cause of the reduced COVID-19 related death rates in these countries, because NH₄Cl is a known lysosomotropic agent, which has been indicated to inhibit or prevent SARS-CoV infection. To check the possible effectiveness of salmiak consumption against COVID-19 related death, the authors used a linear regression model with the death rate as the dependent variable and BCG-policy and salmiak consumption score as independent variables.

Results: Using least squares regression and a robust standard error algorithm, the authors found a significant effect exerted by the independent variables (P < 0.0005 for BCG and P = 0.001 for salmiak). Salmiak score alone was significant (P = 0.016) when using least squares regression with robust error algorithm. 

Conclusions: The results seem to confirm an association between BCG-positive vaccination policy and salmiak consumption, and lower death rates from COVID-19. Implementing BCG vaccination policy and fortification of foods with salmiak (NH₄Cl) may have a significant impact on the control of SARS-CoV epidemic.

Erectile dysfunction (ED) is a syndrome associated with endothelial dysfunction, which may predict cardiovascular events in men presenting with this syndrome. It has been shown to be associated with a higher rate of acute myocardial infarction and cardiovascular mortality, vascular inflammation, and impaired endothelial function. In this review we present the literature findings and describe the mechanistic pathways that are known to be involved in this syndrome and its related clinical consequences.

Background: Strategies aimed at expanding the organ donor pool have been sought, which has resulted in renewed interest in donation after cardio-circulatory death (DCCD), also known as non-heart beating donors (NHBDs).

Objectives: To describe the derivation and implementation of a protocol for DCCD in Israel and report on the results with the first six cases. 

Methods: After receiving approval from an extraordinary ethics committee, Ministry of Health, the steering committee of the National Transplant Center defined and reached consensus on the unique challenges presented by a DCCD program. These protocol included medical aspects (construction of a clinical pathway), social and ethical aspects (presentation of the protocol at a public gathering(, legal/ethical aspects (consent for organ preservation procedures being either implied if the donor had signed an organ donor card or received directly from a surrogate decision maker), and logistical aspects (pilot study confined to kidney retrieval and to four medical centers). Data regarding organ donors and recipients were recorded.

Results: The protocol was implemented at four medical centers. Consent for organ donation was received from four of the six potential donors meeting criteria for inclusion, in all cases, from a surrogate decision maker. Of the eight kidneys retrieved, only four were suitable for transplantation, which was carried out successfully for four recipients. Graft function remained normal in all cases in 6–12 months follow-up. 

Conclusions: The DCCD program was successfully implemented and initial results are encouraging, suggesting that expansion of the program might further aid in decreasing the gap between needs and availability of organs.

 

Background: Syncope prognosis varies widely: 1 year mortality may range from 0% in the case of vasovagal events up to 30% in the presence of heart disease. 

Objectives: To assess the outcomes and prognosis of patients with implantable cardiac defibrillator (ICD) and indication of primary prevention and compare patients presenting with or without prior syncope.

Methods: We reviewed the charts of 75 patients who underwent ICD implantation with the indication of primary prevention and history of syncope and compared them to a control group of 80 patients without prior syncope. We assessed the number of ventricular tachycardia (VT), ventricular fibrillation (VF), shock, anti-tachycardia pacing (ATP), and death in each group during the follow-up.

Results: Mean follow-up was 893 days (810–976, 95% confidence interval) (no difference between groups). Patients with prior syncope had a higher ejection fraction (EF) (35.5 ± 12.6 vs. 31.4 ± 8.76, P = 0.02), more episodes of VT (21.3% vs. 3.8%, P = 0.001) and VF (8% vs. 0%, P = 0.01) and also received more electric shocks (18.7% vs. 3.8%, P = 0.004) and ATP (17.3% vs. 6.2%, P = 0.031). There were no differences in inappropriate shocks (6.7% vs. 5%, P = 0.74), in cardiovascular mortality (cumulative 5 year estimate 29.9% vs. 32.2% P = 0.97) and any death (cumulative 5 year estimate 38.1% vs. 48.9% P = 0.18) during the follow-up.

Conclusions: Syncopal patients before ICD implantation seem to have more episodes of VT/VF and shock or ATP. No mortality differences were observed

 

Background: Syncope is a common clinical condition spanning from benign to life-threatening diseases. There is sparse information on the outcomes of syncopal patients who received an implantable cardiac defibrillator (ICD) for primary prevention of sudden cardiac death (SCD). 

Objectives: To assess the outcomes and prognosis of patients who underwent implantable cardiac defibrillator (ICD) implantation for primary prevention of SCD and compare them to patients who presented with or without prior syncope.

Methods: We compared the medical records of 75 patients who underwent ICD implantation for primary prevention of SCD and history of syncope to those of a similar group of 80 patients without prior syncope. We assessed the episodes of ventricular tachycardia (VT), ventricular fibrillation (VF), shock, anti-tachycardia pacing (ATP) and mortality in each group during follow-up.

Results: Mean follow-up was 893 days (810–976, 95%CI) (no difference between groups). There was no significant difference in gender or age. Patients with prior syncope had a higher ejection fraction rate (35.5 ± 12.6 vs. 31.4 ± 8.76, P = 0.02), experienced more episodes of VT (21.3% vs. 3.8%, P = 0.001) and VF (8% vs. 0%, P = 0.01), and received more electric shocks (18.7% vs. 3.8%, P = 0.004) and ATP (17.3% vs. 6.2%, P = 0.031). There were no differences in inappropriate shocks (6.7% vs. 5%, P = 0.74), cardiovascular mortality (cumulative 5 year estimate 29.9% vs. 32.2%, P = 0.97) and any death (cumulative 5 year estimate 38.1% vs. 48.9%, P = 0.18).

Conclusions: Patients presenting with syncope before ICD implantation seemed to have more episodes of VT/VF and shock or ATP. No differences in mortality were observed