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עמוד בית
Sat, 23.11.24

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January 2007
I. Morag, M. Goldman, J. Kuint, E. Heyman

Background: Necrotizing enterocolitis is a common progressive gastrointestinal disease affecting more than 5% of very low birth weight infants and associated with a high mortality rate.

Objectives: To determine whether excessive weight gain in preterm infants is an early sign of NEC[1].

Methods: Seventeen preterm infants with perforated NEC were identified and matched with 17 control subjects for birth weight and gestational age. The postnatal age (days) at diagnosis of NEC was identified, and weight changes as well as clinical and laboratory data were recorded and compared for 7 days prior through 7 days post-diagnosis.

Results: A significant difference in weight gain was noticed between D-1 and D 0. The NEC and control groups gained 5.1% and 1.2%, respectively (P = 0.002). None of the sick infants lost weight on days -1 to D 0.

Conclusions: Excessive weight gain was observed in premature infants who subsequently developed NEC. Daily evaluation of weight changes should be considered part of a strategy for early identification of infants at risk for developing NEC. Future studies are needed to confirm this finding in a prospective manner and to investigate its pathogenesis.






[1] NEC = necrotizing enterocolitis


December 2006
November 2006
D. Soffer
 Cerebral amyloid angiopathy is characterized by deposition of amyloid in the walls of leptomeninged and cerebral blood vessels. Its most common form, sporadic CAA[1] that results from deposition of β-amyloid peptide, which is the subject of this short review, is present in virtually all cases of Alzheimer diseases and is also common among non-demented subjects where its prevalence increases with age. Stroke due to massive cerebral lobar hemorrhage is the main clinical presentation of CAA, but transient neurologic symptoms due to microhemorrhages may also occur. CAA is also a risk factor for cerebral infarction and there is increasing evidence that CAA contributes to cognitive impairment in the elderly, usually in association with white matter abnormalities on imaging. Although the definitive diagnosis of CAA is neuropathologic, reliable diagnosis can be reached clinically, based on the occurrence of strictly lobar hemorrhages, particularly in the cortico-subcortical area when using gradient-echo or T2*-weighted magnetic resonance imaging. Experimental studies have shown that the origin of the vascular amyloid is neuronal, and age-related degenerative changes in the vessel walls prevent its clearance from the brain along perivascular spaces and promote Aβ[2] aggregation and CAA formation. The entrapped Aβ aggregetes are toxic to various vascular wall components, including smooth muscle cells, pericytes and endothelial cells, leading to their eventual destruction and predisposition of the vessel wall to rupture and hemorrhage. However, more research is necessary to decipher the mechanism of CAA formation and its relation to cognitive decline in the elderly.







[1] CAA = cerebral amyloid angiopathy

[2] Aβ = β-amyloid peptide


R. Segal, A. Furmanov and F. Umansky
 Background: The recent occurrence of a spontaneous intracerebral hemorrhage in Israel’s Prime Minister placed the scrutiny of local and international media on neurosurgeons as they made therapeutic decisions. In the ensuing public debate, it was suggested that extraordinary measures (surgical treatment) were undertaken only because of the celebrity of the patient.

Objectives: To evaluate the criteria used to select surgical versus medical management for SICH.

Methods: We retrospectively reviewed the files of 149 consecutive patients admitted with SICH[1] from January 2004 through January 2006 to our medical center. Their mean age was 66 (range 3–92 years), and 62% were male. SICH localization was lobar in 50% of patients, thalamus in 23%, basal ganglia in 15%, cerebellum in 13%, intraventricular in 6%, and pontine in 1%. Mean admission Glasgow Coma Score was 9 (range 3–15). Risk factors included hypertension in (74%), diabetes mellitus (34%), smoking (14%) and amyloid angiopathy (4%). Fifty percent of patients were on anticoagulant/antiplatelet therapy, including enoxaparin (3%), warfarin (7%), warfarin and aspirin (9%), or aspirin alone (34%).      

Results: Craniotomy was performed in 30% of patients, and ventriculostomy alone in 3%. Rebleed occurred in 9% of patients. Six months after the treatment 36% of operated patients were independent, 42% dependent, and 13% had died. At 6 months, 37% of non-operated patients were independent, 15% dependent, and 47% had died.

Conclusions: One-third of the SICH patients, notably those who were experiencing ongoing neurologic deterioration and had accessible hemorrhage, underwent craniotomy. The results are good, considering the inherent mortality and morbidity of SICH.


 





[1] SICH = spontaneous intracerebral hemorrhage


October 2006
M. Shtalrid, L. Shvidel, E. Vorst, E.E. Weinmann, A. Berrebi and E. Sigler
 Background: Post-transfusion purpura is a rare syndrome characterized by severe thrombocytopenia and bleeding caused by alloimunization to human platelet specific antigens following a blood component transfusion. The suggested incidence is 1:50,000–100,000 transfusions, most often occurring in multiparous women. The diagnosis is not easy because these patients, who are often critically ill or post-surgery, have alternative explanations for thrombocytopenia such as infection, drugs, etc.

Objectives: To describe patients with initially misdiagnosed PTP[1] and to emphasize the diagnostic pitfalls of this disorder.

Patients and Results: During a period of 11 years we have diagnosed six patients with PTP, four women and two men. The incidence of PTP was approximately 1:24,000 blood components transfused. We present the detailed clinical course of three of the six patients in whom the diagnosis was particularly challenging. The patients were initially misdiagnosed as having heparin-induced thrombocytopenia, systemic lupus erythematosus complicated by autoimmune thrombocytopenia, and disseminated intravascular coagulation. A history of recent blood transfusion raised the suspicion of PTP and the diagnosis was confirmed by appropriate laboratory workup.

Conclusions: PTP seems to be more frequent than previously described. The diagnosis should be considered in the evaluation of life threatening thrombocytopenia in both men and women with a recent history of blood transfusion.


 





[1] PTP = post-transfusion purpura


September 2006
O. Tamir, M. Rabinovich and M. Shani

In Israel, updating of the National List of Health Services is performed on a yearly basis in a systematic and structured mechanism for almost a decade. The existence of such a mechanism is vital for keeping medicine up to date, since many innovative and breakthrough medical technologies continuously and frequently evolve. The 2006 update is unique in several aspects, relating both to the mechanism and to the decision-making process. In this article we describe notable issues that arose during the current process: modifications to the update mechanism, the four-phase increase in allocated resources to fund the addition of new medical technologies (including the addition of finances at the expense of the 2007 planned budget), and public funding for high-cost therapies. Finally, we discuss the impact of medical advances on healthcare costs and a suggested constant annual addition to the budget.

M. Ben-Haim, M. Carmiel, P. Katz, E. Shabtai, R. Oren and R. Nakache

Background: The model for end-stage liver disease is the best available predictor of waiting list mortality among liver transplant candidates.

Objectives: To validate the applicability of MELD[1] in Israel.

Methods: All candidates awaiting liver transplantation in our institution were followed prospectively since 2002. We measured the concordance (c-statistic) equivalent to the area under the receiver operating characteristic curve in order to assess the predictive power of MELD. Other independent mortality risk factors were identified by a separate multivariate analysis. Mortality rates within different MELD and Child‑Pugh‑Turcotte scores were compared to the original (United States) MELD data.

Results: Of 86 patients listed for transplantation, 40 were transplanted (36 in Israel and 4 abroad). Of the other 46 patients, 24 are alive and still listed, and 22 died (25%, ~7%/year). The area under the ROC[2] curve for MELD score was 0.79 (0.83 USA) compared to a CPT[3] score of 0.71 (O.76 USA). High MELD scores, occurrence of spontaneous bacterial peritonitis, and diagnosis of hepatocellular carcinoma were independent risk factors of mortality. Death rates per mid MELD score (20–29) were significantly higher than the USA results.

Conclusions: MELD is valid in Israel and superior to CPT in predicting waiting list mortality. Although longer waiting time due to organ scarcity is a key factor, death rates in the mid-range (10–29) MELD groups indicate further audit of the care of patients with end‑stage liver disease.






[1] MELD = model for end-stage liver disease



[2] ROC = receiver operating characteristic



[3] CPT = Child‑Pugh‑Turcotte


R. Yerushalmi, E. Fenig, D. Shitrit, D. Bendayan, A. Sulkes, D. Flex and M.R. Kramer

Background: Endobronchial stents are used to treat symptomatic patients with benign or malignant airway obstructions.

Objectives: To evaluate the safety and outcome of airway stent insertion for the treatment of malignant tracheobronchial narrowing.

Methods: The files of all patients with malignant disease who underwent airway stent insertion in our outpatient clinic from June 1995 to August 2004 were reviewed for background data, type of disease, symptoms, treatment, complications, and outcome.

Results: Airway stents were used in 34 patients, including 2 who required 2 stents at different locations, and one who required 2 adjacent stents (total, 37 stents). Ages ranged from 36 to 85 years (median 68). Primary lung cancer was noted in 35% of the patients and metastatic disease in 65%. Presenting signs and symptoms included dyspnea (82%), cough (11.7%), hemoptysis (9%), pneumonia (5.9%), and atelectasis (3%). The lesions were located in the left mainstem bronchus (31%), trachea (26%), right mainstem bronchus (26%), subglottis (14.3%), and bronchus intermedius (2.9%). Conscious sedation alone was utilized in 73% of the patients, allowing for early discharge. Eighteen patients (50%) received brachytherapy to the area of obstruction. Complications included stent migration (one patient) and severe or minimal bleeding (one patient each). Ninety-four percent of the patients reported significant relief of their dyspnea. Three of the four patients who had been mechanically ventilated before the procedure were weaned after stent insertion. Median survival from the time of stent placement was 6 months (range 0.25–105 months).

Conclusion: Stent placement can be safely performed in an outpatient setting with conscious sedation. It significantly relieves the patient's symptoms and may prolong survival.
 

D. Soffer, J. Klauser, O. Szold, C.I. Schulman, P. Halpern, B. Savitsky, L. Aharonson-Daniel and K. Peleg

Background: The rate of trauma in the elderly is growing.

Objectives: To evaluate the characteristics of non-hip fracture-associated trauma in elderly patients at a level I trauma center.

Methods: The study database of this retrospective cohort study was the trauma registry of a level I trauma center. Trauma patients admitted from January 2001 to December 2003 were stratified into different age groups. Patients with the diagnosis of hip fracture were excluded.

Results: The study group comprised 7629 patients. The non-hip fracture elderly group consisted of 1067 patients, 63.3% women and 36.7% men. The predominant mechanism of injury was falls (70.5%) and most of the injuries were blunt (94.1%). Injury Severity Score was found to increase significantly with age. The average mortality rate among the elderly was 6.1%. Age, ISS[1], Glasgow Coma Score on admission, and systolic blood pressure on admission were found to be independent predictors of mortality.

Conclusions: Falls remain the predominant cause of injury in the elderly. Since risk factors for mortality can be identified, an effective community prevention program can help combat the future expected increase in morbidity and mortality associated with trauma in the elderly.






[1] ISS = Injury Severity Score


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