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1.
Int J Equity Health ; 19(1): 56, 2020 04 29.
Article in English | MEDLINE | ID: mdl-32349751

ABSTRACT

BACKGROUND: Irregular migrants (IMM) are excluded from the National health insurance in most developed countries and may use the emergency department (ED) as a source for medical care. This study aims to compare the use of ED by IM with that of Israeli citizens (IC) in a large urban hospital in Tel Aviv, including socio-demographic characteristics, hospitalization proportion and medical conditions on admission. METHODS: This cross-sectional study included all IM and IC patients older than 18 years who attended the ED between 2007 and 2011, and compared their socio-demographic characteristics, the administrative details of the visit and clinical variables upon admission. Hospitalization proportion was calculated by dividing the number of patients who were admitted to the hospital ward by the number of all patients who attended the ED. RESULTS: IM who attended the ED were younger compared to IC (mean 39 ± 17 versus 52 ± 22 years, respectively), mostly males (1.4 Male/Female ratio) and mainly originated from developing countries. IM were more commonly self-referred, more likely to attend the ED during evening hours and weekends, complained of occupational injuries and frequented the surgical rather the medical ward of the ED compared with IC. IM stayed at the ED for longer periods than IC, yet the proportion of their hospitalization was lower than that of IC (19.4% versus 23.5%, respectively). CONCLUSION: IM stayed in the ED for longer periods and were less likely to be admitted to the hospital wards, suggesting presentation of non-severe medical conditions or possible barriers in ensuring care continuity in the community following discharge. Minimizing the barriers of IM to primary care in the community can reduce unnecessary referrals to the ED. Additionally, hospitals managements should respond to the high-volume of IM by shifting staff to busy hours and improving the communication with IM.


Subject(s)
Emergency Service, Hospital/statistics & numerical data , Hospitalization/statistics & numerical data , Hospitals, Urban/statistics & numerical data , Patient Acceptance of Health Care/statistics & numerical data , Primary Health Care/statistics & numerical data , Transients and Migrants/statistics & numerical data , Adolescent , Adult , Aged , Cross-Sectional Studies , Female , Humans , Israel , Male , Middle Aged , Young Adult
2.
Psychol Med ; 44(10): 2077-84, 2014 Jul.
Article in English | MEDLINE | ID: mdl-24131552

ABSTRACT

BACKGROUND: Post-traumatic stress disorder (PTSD) is a chronic and difficult to treat psychiatric disorder. Objective, performance-based diagnostic markers that uniquely index risk for PTSD above and beyond subjective self-report markers could inform attempts to improve prevention and early intervention. We evaluated the predictive value of threat-related attention bias measured immediately after a potentially traumatic event, as a risk marker for PTSD at a 3-month follow-up. We measured the predictive contribution of attentional threat bias above and beyond that of the more established marker of risk for PTSD, self-reported psychological dissociation. METHOD: Dissociation symptoms and threat-related attention bias were measured in 577 motor vehicle accident (MVA) survivors (mean age = 35.02 years, 356 males) within 24 h of admission to an emergency department (ED) of a large urban hospital. PTSD symptoms were assessed at a 3-month follow-up using the Clinician-Administered PTSD Scale (CAPS). RESULTS: Self-reported dissociation symptoms significantly accounted for 16% of the variance in PTSD at follow-up, and attention bias toward threat significantly accounted for an additional 4% of the variance in PTSD. CONCLUSIONS: Threat-related attention bias can be reliably measured in the context of a hospital ED and significantly predicts risk for later PTSD. Possible mechanisms underlying the association between threat bias following a potentially traumatic event and risk for PTSD are discussed. The potential application of an attention bias modification treatment (ABMT) tailored to reduce risk for PTSD is suggested.


Subject(s)
Accidents, Traffic/psychology , Anxiety/diagnosis , Attention/physiology , Dissociative Disorders/diagnosis , Fear/physiology , Stress Disorders, Post-Traumatic/diagnosis , Survivors/psychology , Adult , Female , Follow-Up Studies , Humans , Male , Middle Aged , Risk Assessment
3.
Science ; 186(4170): 1204-8, 1974 Dec 27.
Article in English | MEDLINE | ID: mdl-17833932

ABSTRACT

Calculations show a significant depletion of ultraviolet and visible radiation due to absorption and scattering by particulates and cloud drops for a fixed amount of ozone.

4.
Emerg Med J ; 22(2): 108-10, 2005 Feb.
Article in English | MEDLINE | ID: mdl-15662059

ABSTRACT

OBJECTIVES: This prospective, nationally representative, multi-centre study was undertaken to assess non-collision injuries sustained by public bus passengers in Israel. METHODS: The emergency departments (EDs) of six medical centres, which participated in this eight month study, were chosen to represent both urban and rural catchment areas. All patients diagnosed with injuries sustained on a public bus not involved in a road traffic accident were promptly evaluated for mechanism and nature of injury and demographic parameters. RESULTS: The study cohort consisted of 120 patients (86 were female, 34 were male, age range 3-89 years). Over half were older than 55 years. The most common injuries were to the limbs, vertebral column, and head. The major mechanism of injury was acceleration/deceleration. Most patients were standing when they sustained the injuries. There were no fatalities, and 17 patients were admitted to hospital (9 of 17, 52% older than 55 years). Extrapolation to yearly national statistics suggests a probable total of 729 such injuries. CONCLUSION: The significant injuries inflicted on passengers of public buses not involved in road traffic accidents warrant decisive preventative measures by transportation authorities.


Subject(s)
Accidents, Traffic/statistics & numerical data , Motor Vehicles , Wounds and Injuries/epidemiology , Accidental Falls/statistics & numerical data , Adolescent , Adult , Age Distribution , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Israel/epidemiology , Male , Middle Aged , Prospective Studies , Wounds and Injuries/etiology , Wounds and Injuries/pathology
5.
Clin Pharmacol Ther ; 45(5): 548-52, 1989 May.
Article in English | MEDLINE | ID: mdl-2656068

ABSTRACT

This randomized, controlled, crossover study evaluated the effect of continuous positive airway pressure (CPAP) breathing on hepatic blood flow (HBF) and cardiac output in 10 healthy male subjects. A CPAP mask was placed on the face and the subject breathed at either CPAP 12.5 cm H2O or ambient airway pressure. The estimated HBF was calculated as the ratio of indocyanine green plasma clearance to one minus the hematocrit. Cardiac output was measured with Doppler ultrasound. CPAP caused HBF to decrease in 8 of 10 subjects (14.1% +/- 15.3%, mean +/- SD, p = 0.033) and cardiac index (CI) to decrease in all subjects (14.1% +/- 5.7%, p = 0.0001). Stroke volume and respiratory rate were significantly decreased; heart rate was unchanged. These results indicate that CPAP at 12.5 cm H2O causes a small, but significant decrease in both HBF and CI.


Subject(s)
Cardiac Output , Liver Circulation , Models, Cardiovascular , Positive-Pressure Respiration , Adult , Humans , Indocyanine Green , Male , Pharmacokinetics , Random Allocation , Statistics as Topic
6.
Neuropharmacology ; 28(3): 271-4, 1989 Mar.
Article in English | MEDLINE | ID: mdl-2542833

ABSTRACT

The benzodiazepine receptor antagonist, flumazenil, at a dose of 10 mg/kg given intraperitoneally to mice, had no effect on the minimum air concentration (MAC-50) of halothane causing anesthesia in 50% of the animals and which was 1.0% by volume of the inhaled air. Diazepam, 10 mg/kg, potentiated the effect of halothane. When the mice had been pretreated with diazepam and flumazenil, 10 mg/kg or 20 mg/kg, partial but not complete reversal of the potentiating effect of diazepam was observed, minimum air concentration values being 0.6% after diazepam alone and 0.8% after diazepam and flumazenil. However, mice pretreated intraperitoneally with flumazenil, in the concentration range 1-10 mg/kg, delivered as a solution in polyethylene glycol-Intralipid vehicle or as a suspension in saline, recovered control levels of spontaneous motor activity much faster than in the absence of flumazenil, on emergence from halothane-induced anaesthesia. In this range, the effect was not dose-dependent. These findings suggest that some of the effects of halothane are mediated at the level of the benzodiazepine receptor.


Subject(s)
Anesthesia , Flumazenil/pharmacology , Halothane , Receptors, GABA-A/drug effects , Animals , Male , Mice , Mice, Inbred ICR , Motor Activity/drug effects , Postural Balance/drug effects
7.
Chest ; 112(2): 491-5, 1997 Aug.
Article in English | MEDLINE | ID: mdl-9266889

ABSTRACT

OBJECTIVE: To evaluate the effects of gut decontamination on endotoxin, tumor necrosis factor (TNF) levels, and the associated lung injury in a rat model of bowel ischemia. SUMMARY BACKGROUND DATA: Gut ischemia induces disruption of the intestinal mucosal barrier, allowing translocation of bacteria and endotoxin into the blood, which may trigger a systemic inflammatory response and lung injury. METHODS: Thirty anesthetized rats were randomized into three groups: (1) ischemia-reperfusion (I/R) alone (a 60-min superior mesenteric artery occlusion and 4 h of reperfusion, n=10); (2) rats that underwent gut decontamination prior to ischemia (I/R+GD, n=10); and (3) control rats (sham operated, n=10). Serum levels of lipopolysaccharide (LPS) and TNF were measured at the end of the experiment. Lung permeability was measured using bovine serum albumin labeled with 125I, and organ injury was assessed histologically. RESULTS: One hour of bowel ischemia and 4 h of reperfusion (I/R) led to elevations of blood LPS and TNF levels of 0.33+/-0.005 EU/mL and 173+/-56 pg/mL, which were higher than the sham group (p<0.01). Gut decontamination (I/R+GD) significantly attenuated the LPS and TNF generation, 0.09+/-0.005 and 56.2+/-6 pg/mL (p<0.01). Lung injury as assessed by pulmonary permeability index was also reduced by gut decontamination, 2.1+/-0.42 vs 5.3+/-0.82 in the control group (p<0.03). Surprisingly no difference was detected in the number of pulmonary neutrophils in sequestration between the groups. CONCLUSIONS: Our data suggest that gut decontamination can reduce the generation of LPS, TNF, and the severity of lung damage that often follows ischemia and reperfusion of the intestine in rats.


Subject(s)
Drug Therapy, Combination/therapeutic use , Endotoxemia/prevention & control , Erythromycin/therapeutic use , Intestines/microbiology , Mesenteric Vascular Occlusion/complications , Neomycin/therapeutic use , Reperfusion Injury/complications , Respiratory Distress Syndrome/prevention & control , Animals , Bacterial Translocation , Blood-Air Barrier/physiology , Cattle , Intestines/blood supply , Iodine Radioisotopes , Lipopolysaccharides/blood , Male , Mesenteric Artery, Superior , Rats , Rats, Sprague-Dawley , Serum Albumin, Bovine , Time Factors , Tumor Necrosis Factor-alpha/analysis
8.
Intensive Care Med ; 17 Suppl 1: S32-8, 1991.
Article in English | MEDLINE | ID: mdl-1685499

ABSTRACT

The popularity and widespread availability of benzodiazepines (BZD) has led to their frequent abuse in intentional drug poisoning. Although mortality from pure BZD overdose is usually small, in elderly, debilitated patients, or when BZD are combined with other CNS depressant drugs, morbidity increases significantly and outcome may be fatal. Drug overdose is therefore a medical emergency necessitating close observation and support of vital functions. Recently, the specific BZD antagonist flumazenil (Anexate) has become clinically available and much experience in its usefulness has accumulated. The present review summarizes a total of 30 studies and reports published to date, involving approximately 760 intoxicated patients. Flumazenil was evaluated both in prehospital use as well as in emergency rooms or in intensive care units. The age of patients ranged from 4-90 years and doses of flumazenil varied between 0.3-10 mg, approximately 1 mg being the most frequently used. All patients intoxicated with only BZD returned to full consciousness within minutes after the injection of flumazenil. When a mixture of BZD and other CNS depressants was abused, a range of effects was observed. This varied from no change to a return to full orientation, depending on the contribution of the BZD to the state of unconsciousness. Re-sedation occurred in about 65% of flumazenil treated patients, usually within 0.5-3 h after the first dose, the shorter interval being associated with mixed-drug poisoning. Repeated doses of the antagonist (0.2-2 mg), sometimes followed by continuous infusion (0.1-0.5 mg/h), were effective in maintaining patients fully oriented.(ABSTRACT TRUNCATED AT 250 WORDS)


Subject(s)
Anti-Anxiety Agents/poisoning , Flumazenil/therapeutic use , Drug Overdose/drug therapy , Flumazenil/pharmacology , Humans
9.
Intensive Care Med ; 23(12): 1258-63, 1997 Dec.
Article in English | MEDLINE | ID: mdl-9470082

ABSTRACT

OBJECTIVE: To compare the efficacy, safety, and cost of midazolam and propofol in prolonged sedation of critically ill patients. DESIGN: Randomized, prospective study. SETTING: General intensive care unit (ICU) in a 1100-bed teaching hospital. PATIENTS: 67 critically ill, mechanically ventilated patients. INTERVENTIONS: Patients were invasively monitored and mechanically ventilated. A loading dose [midazolam 0.11 +/- 0.02 (SEM) mg.kg-1, propofol 1.3 +/- 0.2 mg.kg-1] was administered, followed by continuous infusion, titrated to achieve a predetermined sedation score. Sedation was continued as long as clinically indicated. MEASUREMENTS AND RESULTS: Mean duration of sedation was 141 and 99 h (NS) for midazolam and propofol, respectively, at mean hourly doses of 0.070 +/- 0.003 mg.kg-1 midazolam and 1.80 +/- 0.08 mg.kg-1 propofol. Overall, 68% of propofol patients versus 31% of midazolam (p < 0.001) patients had a > 20% decrease in systolic blood pressure after the loading dose, and 26 versus 45% (p < 0.01) showed a 25% decrease in spontaneous minute volume. Propofol required more daily dose adjustments (2.1 +/- 0.1 vs 1.4 +/- 0.1, p < 0.001). Nurse-rated quality of sedation with midazolam was higher (8.2 +/- 0.1 vs 7.3 +/- 0.1 on a 10-cm visual analog scale, p < 0.001). Resumption of spontaneous respiration was equally rapid. Recovery was faster after propofol (p < 0.02), albeit with a higher degree of agitation. Amnesia was evident in all midazolam patients but in only a third of propofol patients. The cost of propofol was 4-5 times higher. CONCLUSIONS: Both drugs afforded reliable, safe, and controllable long-term sedation in ICU patients and rapid weaning from mechanical ventilation. Midazolam depressed respiration, allowed better maintenance of sedation, and yielded complete amnesia at a lower cost, while propofol caused more cardiovascular depression during induction.


Subject(s)
Hypnotics and Sedatives/therapeutic use , Midazolam/therapeutic use , Propofol/therapeutic use , Adult , Critical Illness , Female , Humans , Hypnotics and Sedatives/adverse effects , Hypnotics and Sedatives/economics , Intensive Care Units , Male , Midazolam/adverse effects , Midazolam/economics , Middle Aged , Propofol/adverse effects , Propofol/economics , Prospective Studies , Respiration, Artificial , Treatment Outcome , Ventilator Weaning
10.
Arch Surg ; 130(10): 1079-84, 1995 Oct.
Article in English | MEDLINE | ID: mdl-7575120

ABSTRACT

BACKGROUND: The tolerated systemic dose of recombinant tumor necrosis factor alpha (rTNF-alpha) is very limited, since its administration leads to a severe septic shock-like condition. Its implementation in isolated limb perfusion (ILP) for metastatic melanoma or advanced soft-tissue sarcoma confined to the limb facilitates doses of rTNF-alpha 10 times higher than the systemic tolerated dose. However, with the traditional high flow rate used in ILP, systemic leakage and side effects are not eliminated. OBJECTIVE: To determine if a lower perfusion flow rate would reduce leakage and consequently toxic effects. METHODS: Isolated limb perfusion was performed for melanoma and soft-tissue sarcoma confined to the limb using a flow rate of 869 +/- 122 mL/min in nine patients (group 1) and a lower rate of 286 +/- 62 mL/min in six patients (group 2). RESULTS: The systemic leakage rate was 12.5% +/- 2.9% in group 1, compared with 2.3% +/- 1.0% in group 2 (P = .003). Peak TNF-alpha levels were 29,000 +/- 2700 pg/mL in group 1, higher than 1580 +/- 1355 pg/mL in group 2 (P = .02). The tachycardia, hypotension, increased cardiac output, decreased systemic vascular resistance, bilirubinemia, elevation of liver enzyme levels, hypocholestrolemia, thrombocytopenia, and prolongation of prothrombin and partial thromboplastin times all observed in group 1 were significantly attenuated or eliminated in group 2. The limb PO2, PCO2, pH, and viability remained similar in both groups. Also, the tumor response rate remained high and was unaffected by the decrease in flow rate. CONCLUSIONS: Decreasing perfusion flow rate during ILP results in diminished leakage of TNF-alpha. Consequently, the systemic hemodynamic, metabolic, and hematologic toxic effects are virtually abolished.


Subject(s)
Antineoplastic Agents/administration & dosage , Antineoplastic Agents/adverse effects , Arm , Chemotherapy, Cancer, Regional Perfusion/methods , Leg , Melanoma/therapy , Sarcoma/therapy , Soft Tissue Neoplasms/therapy , Tumor Necrosis Factor-alpha/administration & dosage , Tumor Necrosis Factor-alpha/adverse effects , Adolescent , Adult , Aged , Analysis of Variance , Antineoplastic Agents/analysis , Antineoplastic Agents, Alkylating/therapeutic use , Blood Cell Count/drug effects , Cholesterol/blood , Drug Administration Schedule , Female , Hemodynamics/drug effects , Humans , Liver Function Tests , Male , Melanoma/physiopathology , Melanoma/secondary , Melphalan/therapeutic use , Metabolism/drug effects , Middle Aged , Recombinant Proteins , Sarcoma/physiopathology , Tumor Necrosis Factor-alpha/analysis
11.
Brain Res ; 815(2): 287-93, 1999 Jan 09.
Article in English | MEDLINE | ID: mdl-9878789

ABSTRACT

We examined in mice the effect of chronic diazepam treatment on the sensitivity to isoflurane, and that of repeated isoflurane exposure on the sensitivity to diazepam. Mice were divided into four groups: group 1, treated with diazepam, 10 mg/kg i.p. twice daily; group 2, vehicle-treated controls; group 3, exposed to 3% isoflurane for 25 min twice daily; and group 4, untreated controls. After 14 days the effect of the treatment was assessed. Twenty-four hours after the last 10 mg/kg diazepam treatment, groups 1 and 2 received diazepam, 5 mg/kg i.p., and were subjected to the horizontal wire test (HWT). All control mice but only 10% of the diazepam-treated mice failed the HWT. Groups 1 and 2 were then exposed to increasing concentrations of isoflurane. Diazepam-treated mice (group 1) lost the HWT at 0.7+/-0.7%, compared with 0.6+/-0.1% in controls (group 2) (P<0.001); the ED50 was 0.75% vs. 0.65%. Group 1 mice lost the righting reflex at 0.94+/-0.07% isoflurane vs. 0.87+/-0.06% in group 2 (P<0.01); the ED50 was 0.93% vs. 0.82%. Recovery time was 175+/-161 s in group 1 vs. 343+/-275 s in group 2 (P<0.02). Twenty-four hours after the last of the repeated exposures to isoflurane, we examined the responses of groups 3 and 4 to increasing concentrations of isoflurane. Mice in group 3 lost the righting reflex at 1.0+/-0.06% isoflurane vs. 0.9+/-0.04% in controls (group 4) (P<0.001); the ED50 was 0.96% vs. 0.85%. Recovery time was 113+/-124 s vs. 208+/-126 s in groups 3 and 4 (P<0.09). Diazepam, 3 mg/kg i.p. administered to groups 3 and 4, caused loss of the HWT reflex in 33% of group 3 mice and in 82% of controls (group 4) (P<0.001). It appears that prolonged exposure to both diazepam and isoflurane caused reduced sensitivity to each drug separately, as well as to the other drug. This finding may strengthen the theory that inhalational anesthetics may act via the same mechanism as the benzodiazepines.


Subject(s)
Diazepam/pharmacology , Isoflurane/pharmacology , Administration, Inhalation , Animals , Behavior, Animal/drug effects , Diazepam/administration & dosage , Diazepam/blood , Dose-Response Relationship, Drug , Drug Administration Schedule , Drug Tolerance , Injections, Intraperitoneal , Isoflurane/administration & dosage , Male , Mice , Mice, Inbred ICR , Receptors, GABA-A/metabolism , Reflex/drug effects
12.
Eur J Pharmacol ; 253(3): 231-6, 1994 Mar 03.
Article in English | MEDLINE | ID: mdl-8200417

ABSTRACT

The effects of Ro 5-4864, a peripheral benzodiazepine receptor agonist (9 x 10(-6) M and 9 x 10(-5) M) and of PK 11195, a peripheral benzodiazepine receptor antagonist (3 x 10(-6) M and 3 x 10(-5) M), alone or together, on contraction parameters of human atrial muscle strips were studied. Atrial muscle strips were obtained from patients undergoing cardiac surgery. The strips were suspended in Krebs-Henseleit solution at 36.8 +/- 0.2 degrees C, connected to an isometric force transducer and then stimulated at 15 V above threshold and paced at 1.5 Hz. Ro 5-4864 at its higher concentration, alone or mixed with PK 11195 at both concentrations, depressed the contraction amplitude to 80% of the control value (P < 0.05). In conclusion, Ro 5-4864 had a small but significant depressant effect on the contraction amplitude of human atrial strips. Surprisingly, this effect was not reversed by the peripheral benzodiazepine receptor antagonist PK 11195.


Subject(s)
Benzodiazepinones/pharmacology , GABA-A Receptor Antagonists , Isoquinolines/pharmacology , Myocardial Contraction/drug effects , Adult , Aged , Depression, Chemical , Electrophysiology , Female , Humans , In Vitro Techniques , Male , Middle Aged
13.
Resuscitation ; 13(3): 185-90, 1986 Apr.
Article in English | MEDLINE | ID: mdl-3012734

ABSTRACT

Naloxone hydrochloride (N) 0.4-1.2 mg i.v. was administered during 10 episodes of shock (8 septic and 2 cardiogenic) in 9 adult patients. Shock was defined as systolic blood pressure (SBP) less than or equal to 90 mmHg and urine output less than 0.5 ml/h and signs and symptoms of hypoperfusion lasting for greater than or equal to 30 min, despite fluid loading to a CVP 5 cmH2O above baseline. N was given as early as 30 min after onset of shock and resulted in an increase of SBP from a mean of 75 +/- 10 to a mean of 130 +/- 25 mmHg maximum (P less than 0.01). Within 10-60 min urine output increased from 16 +/- 12 to 122 +/- 56 ml/h, heart rate, CVP and arterial blood gas tensions remained unchanged. No side effects were observed. Naloxone, even in small doses, may improve hemodynamic parameters in human shock, provided it is administered very early.


Subject(s)
Naloxone/therapeutic use , Shock/drug therapy , Adult , Aged , Blood Pressure , Clinical Trials as Topic , Female , Humans , Male , Middle Aged , Naloxone/urine , Prospective Studies , Time Factors
14.
Resuscitation ; 16 Suppl: S57-62, 1988.
Article in English | MEDLINE | ID: mdl-2904686

ABSTRACT

The efficacy and safety of the newly available benzodiazepine (BDZ) antagonist flumazenil (Ro 15-1788, Anexate) was prospectively evaluated in the treatment of 34 intoxicated patients. Twenty-three patients had attempted suicide with various drugs, and 11 suffered iatrogenic BDZ overdose. Following 0.2 mg i.v. flumazenil (Flu) injection, 22 patients intoxicated mainly with BDZ (11 iatrogenic and 11 intentional) regained full consciousness within two minutes, enabling even extubation of two. Eight patients required repeated boluses or continuous infusion of Flu to maintain alertness. Five patients with mixed drug intoxication awakened only briefly and relapsed into unconsciousness. In spite of Flu doses of up to 20 mg, no effect on consciousness was observed in 7 patients, intoxicated mainly with non-BDZ drugs. No significant side effects were noted attributable to Flu which has proved to be a safe and effective drug. It may be employed to achieve complete reversal of pure BDZ overdose, or for 'unmasking' the relative action of BDZ in mixed drug overdose. The danger of complications from drug overdose may thus be lessened, obviating the need for invasive interventions such as mechanical ventilation and invasive hemodynamic monitoring, at the same time decreasing risk and expense.


Subject(s)
Anti-Anxiety Agents/poisoning , Coma/drug therapy , Flumazenil/therapeutic use , Adolescent , Adult , Aged , Aged, 80 and over , Anti-Anxiety Agents/antagonists & inhibitors , Coma/chemically induced , Drug Evaluation , Female , Humans , Intensive Care Units , Male , Middle Aged , Prospective Studies
15.
Resuscitation ; 16 Suppl: S31-9, 1988.
Article in English | MEDLINE | ID: mdl-2849176

ABSTRACT

ICU patients often require sedation. Midazolam (M), a new imidazobenzodiazepine, features rapid onset and rapid elimination time. Flumazenil (Ro 15-1788) is a new benzodiazepine antagonist. We studied the efficacy and safety of M by continuous infusion in 28 ICU patients: 16 post major surgery, and 12 medical patients, aged 20-77 years. M was administered as a loading dose of 0.05-0.15 mg/kg per min followed by continuous infusion of 0.05-0.1 mg/kg per h titrated to maintain patients asleep but arousable. M was administered for up to 14 days in doses of 1-15 mg/h and cumulative doses of up to 1915 mg. No untoward effects were noted except for slight decreases in blood pressure following the loading dose. ACTH challenge tests performed before and 24 h or more following the start of M showed no depression of adrenal responsivity. All patients meeting weaning criteria were weaned off mechanical ventilation while still on M. In 13 patients extubation was performed immediately after M was stopped, and flumazenil (0.38 +/- 0.27 mg, i.v.) given until full awakening. Patients remained awake yet calm. Vital signs remained stable after flumazenil. Midazolam by continuous infusion appears to be a safe and effective mode of sedation in ICU patients. Flumazenil may increase the flexibility and safety of this mode of sedation.


Subject(s)
Critical Care/methods , Flumazenil/pharmacology , Midazolam/administration & dosage , Adult , Aged , Hemodynamics/drug effects , Humans , Infusions, Intravenous , Midazolam/antagonists & inhibitors , Midazolam/pharmacology , Middle Aged , Respiration/drug effects
16.
Plast Reconstr Surg ; 107(1): 163-8; discussion 169-70, 2001 Jan.
Article in English | MEDLINE | ID: mdl-11176618

ABSTRACT

On August 17, 1999, an earthquake of 7.4 magnitude struck Turkey, resulting in the destruction of the cities Golcuk, Izmit, Adapazari, and Yalova. Three days later, the Israel Defense Force Field Hospital arrived at Adapazari, serving as a reinforcement hospital until the rehabilitation of the local medical facilities. Surgical services in the field hospital were supplied by general, orthopedic, and plastic surgeons. The authors evaluated all soft-tissue injuries managed at the hospital and assessed the need for plastic surgery services in a crisis intervention field hospital. Information was gathered regarding soft-tissue injuries throughout the activity of the hospital. In addition, patients' charts, operations' reports, and entry and evacuation logs were reviewed for all patients accepted and treated in the field hospital. Interviews of patients, local physicians, and citizens of Adapazari were performed to evaluate the medical situation in the first 3 days after the earthquake. A total of 1205 patients were treated by the field hospital in Adapazari; 138 (11.45 percent) of these patients sought aid for isolated soft-tissue injuries, 105 of which (76.09 percent) were earthquake-related. Twenty (51.28 percent) of the operations performed in the hospital were to treat soft-tissue injuries; 1.49 percent of all patients underwent minor surgical manipulations by the plastic surgeon on staff. Plastic surgery patients occupied 13.6 percent of the hospital beds. In conclusion, the authors find it beneficial to supply plastic surgery services at a field hospital in an earthquake situation.


Subject(s)
Disasters , Needs Assessment , Soft Tissue Injuries/surgery , Surgery, Plastic , Hospitals , Humans , Mobile Health Units , Plastic Surgery Procedures , Soft Tissue Injuries/epidemiology , Turkey/epidemiology
17.
Med Eng Phys ; 22(6): 395-404, 2000 Jul.
Article in English | MEDLINE | ID: mdl-11086250

ABSTRACT

Rapid fluid administration is the cornerstone of successful trauma resuscitation of patients in a state of shock. Intravenous (IV) fluid delivery is a physical intrusion into a vein which results in a complex interaction between the rigid catheter and the compliant vein. We present an experimental model of IV infusion into a vein-like compliant tube that (a) demonstrated the interdependence between fluid administration and blood flow in a compliant tube and (b) allowed investigation of the contribution of the central venous system (between the infusion site and the heart) to the total resistance to infusion flow rate. The results show that in cases with very high resistance in the central venous system a significant increase of infusion flow rate cannot be achieved just by increasing the infusion pressure. Similarly, in cases of small veins when only small catheters can be used, infusate flow rate may be increased only by using two independent infusion ports. In cases with increased tissue pressure due to edema, gravity-driven infusion may not produce sufficient perfusion of the vascular compartments. It was also shown that the vein valves do not always close, and that peripheral blood flow may continue together with the infusate fluid (e.g., when there is a small downstream resistance and infusion with a small catheter).


Subject(s)
Hemorheology/instrumentation , Infusions, Intravenous/instrumentation , Models, Cardiovascular , Vascular Resistance/physiology , Veins/physiology , Arm/blood supply , Blood Flow Velocity/physiology , Blood Pressure/physiology , Blood Substitutes , Hemorheology/methods , Hemorheology/standards , Humans , Infusions, Intravenous/standards
18.
Methods Find Exp Clin Pharmacol ; 17(3): 169-74, 1995 Apr.
Article in English | MEDLINE | ID: mdl-8531507

ABSTRACT

The toxicity of hyperbaric oxygen in the central nervous system is expressed by generalized tonic-clonic seizures. In the search for drugs effective against these seizures, we tested flumazenil, a benzodiazepine antagonist known to have antiepileptic properties. Forty rats with chronic cortical electrodes were injected i.p. with one of three doses of flumazenil (0.2, 2, and 20 mg/kg) or their vehicle, before exposure to 0.5 MPa oxygen. EEG and the spectral analysis of background EEG activity were monitored. The duration of the latent period until the appearance of electrical discharges in the EEG was used as an index of oxygen toxicity. Significant prolongation of the latent period preceding oxygen seizures was noted in the group of rats treated with 0.2 mg/kg flumazenil (p < 0.05 in Tukey test). However, when the dose of flumazenil was increased, the duration of the latent period returned to control values. These diverse effects of flumazenil on the benzodiazepine receptor may account for its complex effects on hyperoxic-induced seizures.


Subject(s)
Central Nervous System/drug effects , Flumazenil/pharmacology , GABA Modulators/pharmacology , Oxygen/toxicity , Analysis of Variance , Animals , Benzodiazepines/antagonists & inhibitors , Electroencephalography , Hyperbaric Oxygenation/adverse effects , Male , Oxygen/antagonists & inhibitors , Rats , Rats, Sprague-Dawley
19.
Eur J Emerg Med ; 9(3): 274-7, 2002 Sep.
Article in English | MEDLINE | ID: mdl-12394628

ABSTRACT

Injuries caused by weever fish ( spp) are probably more ubiquitous than reported. Such injuries are extremely painful and require prompt treatment. Only relatively few clinical descriptions of envenomation have been published. We present three patients with envenomation and describe their treatment. Two patients were fishermen injured while handling caught fish and one was a tourist wading into the sea for pleasure. The clinical picture was dominated by extreme pain, which responded partly to the application of warm water, and usually necessitated systemic opiates for adequate control. Follow-up in one of the patients indicated prolonged, slow recovery of the local inflammatory reaction. Prompt analgesia is the mainstay of treatment of this non-lethal but extremely painful envenomation, with the application of hot water being effective, although not always completely.


Subject(s)
Bites and Stings/physiopathology , Fish Venoms/poisoning , Fishes, Poisonous , Adult , Aged , Animals , Bites and Stings/therapy , Humans , Israel , Male , Middle Aged , Treatment Outcome
20.
Emerg Med J ; 21(5): 533-6, 2004 Sep.
Article in English | MEDLINE | ID: mdl-15333522

ABSTRACT

OBJECTIVES: To describe the development of emergency medicine (EM) in Israel and review the specific problems faced by the discipline and describe the solutions that were found. METHODS: A comprehensive literature search was conducted for data on development of EM in the UK and in North America, and the personal knowledge of two of the authors (PH and YW) was used in preparing the article. RESULTS: There are differences in development of EM between Israel and the UK/US models. In Israel the specialty developed within the context of established high quality clinical practice and consequently it met resistance from the system, which did not wish to invest in what it felt might be marginal improvements in patient care. The economics of Israeli medicine also dictated that EM be made into a super-specialty rather than a primary specialty. Certified specialists from family medicine, paediatrics, internal medicine, general surgery, anaesthesia, and orthopaedic surgery can access training positions in EM. Currently there are seven active EM programmes of 2.5 years duration and 16 residents. The curriculum is flexible and a national certification examination is being developed. CONCLUSIONS: Development of EM can and should take different paths according to the specific local needs and realities. There is no single ideal model suitable for all circumstances. The practice of clinical EM in Israel is comparable with that of any developed country and daily progress is being made in the academic areas of teaching and research. There are worldwide similarities in the process of developing EM as a distinct discipline.


Subject(s)
Education, Medical, Graduate/trends , Emergency Medicine/education , Models, Educational , Cross-Cultural Comparison , Curriculum , Education, Medical, Graduate/organization & administration , Education, Medical, Graduate/standards , Humans , Israel , Specialization/economics , Specialization/standards , United Kingdom , United States
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