Sigal Sviri

Sigal Sviri
Hadassah Medical Center | hadassah

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56
Publications
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829
Citations

Publications

Publications (56)
Article
Full-text available
Background: Sepsis-associated immune dysregulation, involving hyper-inflammation and immunosuppression, is common in intensive care patients, often leading to multiple organ dysfunction and death. The aim of this study was to identify the main driving force underlying immunosuppression in sepsis, and to suggest new therapeutic avenues for controll...
Article
The inflammatory response to acute injury among humans has proven difficult to study due to the significant heterogeneity encountered in actual patients. We set out to characterize the immune response to a model injury with reduced heterogeneity, a tracheostomy, among stable critical care patients, using a broad cytokine panel and clinical data. 23...
Article
Patients admitted to hospital with influenza B and A in Jerusalem, Israel, during the 2015-2016 and 2017-2018 influenza seasons demonstrated similar rates of intensive care unit (ICU) admission and associated disease severity. Most (63%) influenza B ICU patients received influenza B-mismatched trivalent vaccine. These findings call into question th...
Article
Variable mortality rates have been reported for patients with rheumatic diseases admitted to an intensive care unit (ICU). Due to the absence of appropriate control groups in previous studies, it is not known whether the presence of a rheumatic disease constitutes a risk factor. Moreover, the accuracy of the Acute Physiology and Chronic Health Eval...
Article
We introduced a simple checklist to act as an aid to memory for our junior medical staff to ensure that every patient in the intensive care unit (ICU) received every appropriate element of a bundle of care every day. The checklist was developed in consultation with our junior doctors and was designed to be completed every morning for every patient...
Article
Vitamin B12 is an essential micronutrient, as humans have no capacity to produce the vitamin and it needs to be ingested from animal proteins. The ingested Vitamin B12 undergoes a complex process of absorption and assimilation. Vitamin B12 is essential for cellular function. Deficiency affects 15% of patients older than 65 and results in haematolog...
Article
Vitamin B12 is an essential micronutrient, with significant intracellular functions. Vitamin B12 deficiency is common in the critically ill population and is associated with significant deficiency syndromes. Increased vitamin B12 levels are associated with worse outcomes in critically ill patients and warrant systemic workup for malignancies and ch...
Article
The 4-hour rule has been introduced in Western Australia, requiring that emergency department (ED) patients be admitted to hospital or discharged from the ED within 4 hours of presentation. We hypothesised that this rule might have been associated with changes in medical emergency team (MET) calls and intensive care unit exit bed block. Hospital da...
Article
Decision-making in intensive care units (ICUs) is often made by surrogates, since patients are unconscious or incompetent. In Israel, Legal Guardians (LGs), appointed by the court, are required to make these decisions. To qualitatively assess the attitudes of LGs required to make decisions on behalf of their relatives. Demographic and semi-structur...
Article
This study was conducted to determine the association between vasopressor requirement and outcome in medical intensive care patients in an environment where treatment is not withdrawn. This was an observational study of patients in the medical intensive care unit (ICU) over a period of 18 months to determine the correlation between vasopressor requ...
Article
Full-text available
Background ICU patients frequently undergo non-life-saving invasive procedures. When patient informed consent cannot be obtained, legal guardianship (LG), often from a close relative, may be required by law. The objective of this cohort study was to investigate the attitudes of LGs of ICU patients regarding the process of decision making for invasi...
Article
Full-text available
Recent evidence has linked tight glucose control to worsened clinical outcomes among adults in intensive care units. To evaluate the effectiveness and safety of a nurse-led intravenous insulin protocol designed to achieve conservative blood glucose control in patients in a medical intensive care unit. A nurse-led intravenous insulin protocol was de...
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Difficulties in communication in intensive care patients receiving mechanical ventilation are a source of stressful experiences and psychoemotional distress. To examine the association between communication characteristics and psychoemotional distress among patients treated with mechanical ventilation in a medical intensive care unit and to identif...
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We describe an observational study in critically ill medical patients showing the association between serum Vitamin B12 levels measured on or near admission and the outcome in these patients. We used the database of patients admitted to the Medical Intensive Care Unit (MICU) at the Hadassah-Hebrew University Medical Center in Jerusalem, Israel, to...
Article
Full-text available
Blood cultures are a key diagnostic test for intensive care unit (ICU) patients; however, contaminants complicate interpretations and lead to unnecessary antibiotic administration and costs. Indications for blood cultures and central venous catheter (CVC) insertions often overlap for ICU patients. Obtaining blood cultures under the strict sterile p...
Article
Full-text available
We describe the case of a woman who presented to the intensive care unit with acute respiratory failure that required mechanical ventilation. She had severe pulmonary hypertension secondary to interstitial lung disease, and her history included sarcoidosis and tuberculosis. She was dependent on inhaled nitric oxide (INO) to maintain safe arterial o...
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Full-text available
Hypotension during hemodialysis is frequent in patients with cardiovascular disease who have a limited physiological compensatory response. Recent advances in technology allow non-invasive monitoring of cardiac output and derived hemodynamic parameters. This prospective study evaluated episodes of intradialytic hypotension using clinical data and c...
Article
In certain populations, social, legal, and religious factors may influence end-of-life decisions in ventilator-dependent patients. This study aims to evaluate attitudes of first-degree relatives of chronically ventilated patients in Israel, toward end-of-life decisions regarding their loved ones, themselves, and unrelated others. The study was cond...
Article
Approximately 15% of nosocomial infections in the ICU result from spread of bacteria on caregivers' hands. The routine chest radiograph provides an unexamined opportunity for bacterial spread: close contact with each patient and sequential examination of ICU patients. This study examined infection control procedures performed during routine chest r...
Article
EBV associated hemophagocytic syndrome (HPS) is an aggressive and potentially life-threatening condition. So far, most EBV associated HPS has been characterized mainly in infants and children in Asian countries. Here, we report six cases of EBV associated HPS occurring in previously healthy adults in a non-endemic area within a short period of 3 ye...
Article
Flail chest after blunt trauma usually requires good pain control and positive pressure support. Continuous negative extrathoracic pressure (CNEP) causes a splinting effect around the anterior chest wall and upper abdomen which increases functional residual capacity and improves lung mechanics. We report an 82-year-old woman with flail chest after...
Article
Patients with respiratory failure due to progressive muscle weakness often require chronic ventilatory support, but many do not make decisions regarding ventilation prior to a crisis. We studied the use of non-invasive ventilation as a tool to enable communication and facilitate decision-making regarding chronic ventilation. Patients with profound...
Article
Full-text available
Venous or arterial air embolism may be a life threatening event. The condition is seen in many fields of medicine, including intensive care. We present a series of three cases of air embolism encountered in the intensive care unit, which demonstrate different pathophysiologies for air embolism in critically ill patients. We also review the literatu...
Article
Full-text available
To review the techniques and long term complications of the various techniques of percutaneous tracheostomy in the critically ill patient. A review of studies reported on the various percutaneous tracheostomy techniques. A tracheostomy is frequently performed in the critically ill patient when prolonged mechanical ventilation, airway protection and...
Article
To assess the frequency, causes, and effect of unsuccessful discharge decisions from the ICU. An 11-bed general intensive care unit of a 750-bed urban university hospital, tertiary referral center and level one trauma center. A prospective, observational study. All ICU patients judged appropriate for discharge by the ICU attending physician. Measur...
Article
Percutaneous tracheostomy is commonly performed in the intensive care unit. This study assesses the long-term outcomes following percutaneous tracheostomy using the Griggs technique. We carried out a prospective observational cohort study. Two hundred and eight patients who had undergone percutaneous tracheostomy between 1 September 1996 and 31 Jul...
Article
Full-text available
Aerosolized NONOates have been investigated in animal models in acute pulmonary hypertension, but none have been used in humans. We report the first use of aerosolized diethylenetriamine nitric oxide adduct (DETA/NO), a NONOate, in a patient with severe acute respiratory distress syndrome. Both pulmonary vascular resistance index and mean pulmonary...
Article
Selective pulmonary vasodilators cause vasodilatation limited to the pulmonary vasculature, within well-ventilated lung regions. Selective pulmonary vasodilators ideally cause only a minimal effect on the systemic circulation and improve ventilation/perfusion matching. NONOates are a novel group of chemical compounds that spontaneously and continuo...
Article
Recognition of thrombotic thrombocytopenic purpura (TTP)/hemolytic uremic syndrome (HUS) following bone marrow transplantation (BMT) has increased in recent years. The use of plasma exchange has greatly improved the outlook of de novo TTP. Fewer data are available on its use in post-BMT TTP but small uncontrolled series showed poor results with low...
Article
Evaluation of CYP2C19 activity and the frequency of CYP2C19 alleles in the Jewish Israeli population. One hundred forty Jewish Israeli subjects received 100 mg racemic mephenytoin and collected urine for 8 hours. Urinary concentrations of mephenytoin enantiomers and 4'-hydroxymephenytoin were determined by gas-liquid chromatography and HPLC, respec...
Article
Thrombotic thrombocytopenic purpura (TTP) occurs in association with a wide variety of disorders including infections, connective tissue diseases, and solid organ tumors. It also may coincide with administration of drugs such as mitomycin, metronidazole, oral contraceptives, cyclosporine, and many others. We report the occurrence of TTP in a patien...
Article
Tachyarrhythmia following scorpion envenomation might be an indication for anti venin therapy. We present a case of an unusual cardiotoxic response to Leiurus quinquestriatus ('yellow scorpion') venom-second degree atrio-ventricular block (Mobitz type 1). We review the biological activities of L. quinquestriatus' venom and the arrhythmia's possible...
Article
The pharmacokinetics of a number of drugs has been shown to be impaired in patients with acute or chronic viral liver disease. To examine the effect of the asymptomatic hepatitis B virus carrier state on the metabolism of dipyrone (INN, metamizole) as a model drug. The pharmacokinetics of the metabolites of dipyrone-4-methylaminoantipyrine, 4-amino...
Article
Legionella feeleii pneumonia has been described in seven cases, three of them being immunocompromised. We describe a case of L. feeleii pneumonia and pericarditis in a healthy man. Epidemiological survey was not conclusive. To the best of our knowledge, there have been no previous descriptions of pericarditis caused by this organism.
Article
Diagnosis of Bronchitis Obliterans with Organizing Pneumonia (BOOP), has been carried out thus far by open lung biopsy, or by transbronchial biopsy. We report a patient who presented with fever, cough and dyspnea. A transthoracic CT-guided biopsy of a peripheral lesion resulted in the diagnosis of BOOP. The histological findings were also confirmed...
Article
Pulmonary involvement is an uncommon extraintestinal manifestation of salmonellosis. We describe a 30 year old man with mental retardation, presenting with salmonella gastroenteritis and bacteremia. An early pneumonia evolving in the clinical setting of severe kyphoscoliosis, suggests that hematogenous spread to the lungs may occur as a result of a...
Article
We present an 18 year old woman suffering from cavernous transformation of the portal vein, hypersplenism and bleeding esophageal varices. Color flow Doppler sonography showed gallbladder wall varices. A review of the literature, revealed 76 cases of gallbladder varices. Mostly, these were associated with portal vein occlusion and rarely with hemob...
Article
We describe a 69-year-old woman with basal cell carcinoma, and chronic lymphocytic leukemia who developed Merkel cell tumor. This latter malignancy first appeared as enlarged lymph nodes in the axilla and elbow regions and responded initially to radiotherapy. Later, the patient developed obstructive jaundice which was due to pancreatic metastases o...
Article
Citrobacter is a known pathogen in a number of superficial and deep infections in humans. It has been rarely associated with endocarditis, being described only once to our knowledge. These bacilli most often cause clinical infection in debilitated or otherwise chronically ill patients. We report a case of endocarditis caused by this pathogen in a y...

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