Mupirocin/chlorexidine to prevent methicillin-resistant Staphylococcus aureus infections: post hoc analysis of a placebo-controlled, randomized trial using mupirocin/chlorhexidine and polymyxin/tobramycin for the prevention of acquired infections in intubated patients.

PURPOSE: The reduction in acquired infections (AI) due to methicillin-resistant Staphylococcus aureus (MRSA) with the mupirocin/chlorhexidine (M/C) decontamination regimen has not been well studied in intubated patients. We performed post hoc analysis of a prior trial to assess the impact of M/C on MRSA AI and colonization. METHODS: We conducted a multicenter, placebo-controlled, randomized, double-blind study with the primary aim to reduce all-cause AI. The two regimens used [topical polymyxin and tobramycin (P/T), nasal mupirocin with chlorhexidine body wash (M/C), or corresponding placebos for each regimen] were administered according to a 2 × 2 factorial design. Participants were intubated patients in the intensive care units of three French university hospitals. The patients enrolled in the study (n = 515) received either active P/T (n = 130), active M/C (n = 130), both active regimens (n = 129), or placebos only (n = 126) for the period of intubation and an additional 24 h. The incidence and incidence rates (per 1,000 study days) of MRSA AI were assessed. Due to the absence of a statistically significant interaction between the two regimens, analysis was performed at the margins by comparing all patient receiving M/C (n = 259) to all patients not receiving M/C (n = 256), and all patients receiving P/T (n = 259) to all patients not receiving P/T (n = 256). RESULTS: Incidence [odds ratio (OR) 0.39, 95 % confidence interval (CI) (0.16-0.96), P = 0.04] and incidence rates [incidence rate ratio (IRR) 0.41, 95 % CI 0.17-0.97, P = 0.05] of MRSA AI were significantly lower with the use of M/C. We also observed an increase in the incidence (OR 2.50, 95 % CI 1.01-6.15, P = 0.05) and the incidence rate (IRR 2.90, 95 % CI 1.20-8.03, P = 0.03) of MRSA AI with the use of P/T. CONCLUSION: Among our study cohort of intubated patients, the use of M/C significantly reduced MRSA AI.

Hashimoto's encephalopathy in the intensive care unit.

BACKGROUND: Since the first description of Hashimoto's Encephalitis (HE) in 1966 by Lord Brain, the number of reported cases has continued to increase. In addition, cases of status epilepticus have been reported, suggesting a role for intensive care unit (ICU) practitioners in taking care of patients with HE. METHODS: A retrospective cohort study in ICU patients with HE was performed at the University Hospital of Tours, France. RESULTS: Eight HE cases were admitted to the ICU between 1/1/2000 and 1/1/2012. Herein, we describe the characteristics of the patients, with an emphasis on ICU disease management and its outcome. CONCLUSION: ICU practitioners should be aware of this disease, since it can include life-threatening presentations.

Predictors of outcomes in COPD exacerbation cases presenting to the emergency department.

The aim of the present prospective multicentric study was to develop a simple rule for the prediction of poor outcome in patients presenting to emergency departments with initially non-life threatening-chronic obstructive pulmonary disease (COPD) exacerbations in a real-life setting. All patients with an acute exacerbation of COPD visiting the emergency departments of 103 hospitals during a 3-month period were included, except those who immediately required intensive care unit admission and/or ventilatory support. The data collected included patient characteristics, in-hospital outcomes (mortality and length of stay) and mode of discharge (unsupported or need for post-hospital assistance). The in-hospital mortality rate was 7.4% (59 out of 794). Independent prognostic factors were age, number of clinical signs of severity (among cyanosis, impaired neurological status, lower limb oedema, asterixis and use of accessory inspiratory or expiratory muscles) and dyspnoea grade in the stable state. The need for post-hospital support was also predicted by female sex. In order to construct and validate a prediction score for mortality based on these items, patients were randomly allocated to a derivation and a validation cohort. The prediction score showed good discrimination, with a c-statistic of 0.79 in the derivation cohort and 0.83 in the validation cohort. Thus simple purely clinical factors can reliably predict the risk of death and requirement for post-hospital support in an initially non-life threatening-acute exacerbation of chronic obstructive pulmonary disease. Their use needs to be prospectively validated.

[Creation of a regional stroke network in Tours hospital (France): consequences for stroke care and thrombolysis]. / Création d'une filière neuro-vasculaire régionale: évaluation de la prise en charge à 18 mois.

INTRODUCTION: Our university hospital serves a population of 300 000 inhabitants. Stroke is the leading cause of admission in our department of neurology. In June 2003, when the Emergency Department (ED) was closed in our institution, was created an acute stroke network (ASN), comprising 2 beds of direct admission and thrombolysis in the intensive care unit, and 4 beds dedicated to stroke care in the department of neurology, in which standardized stroke care protocols were implemented. OBJECTIVE: The aim of this study was to evaluate changes in stroke care related to the creation of the ASN in terms of delays of arrival, imaging, use of intravenous (IV) thrombolysis, and outcome of patients. We conducted a prospective study during 18 months to evaluate characteristics of patients admitted with suspected stroke or transient ischemic attack (TIA) in the newly created ASN and to assess conditions of treatment with IV thrombolysis in terms of safety and efficacy. We also compared the outcome data before and after the creation of the ASN. METHODS: For each patient admitted in our hospital for suspected stroke or TIA, were prospectively collected clinical and outcome data (age, mode of transport, delay of arrival after the onset of symptoms (OS), treatment with IV thrombolysis, outcome and discharge). This study was conducted in the ED during six months in 2002, and in the ASN during 18 months, for all patients admitted for stroke. RESULTS: Three hundred and sixty four patients were admitted in the ASN. Emergency medical services (EMS) were used in half of cases for transport, and median delay of admission after the OS was 2h and 52 min. Median delay of imaging was 1 h and 45 min. Seventeen patients (8.5 p. 100 of ischemic stroke patients) were treated with IV thrombolysis, with an initial good outcome in 9 patients, 7 with a dramatic recovery). The main reason for therapeutic abstention for untreated patients admitted in the first 3 hours was a mild deficit with a NIHSS<6. Compared with the previous management in the ED, patients in the ASN were younger, had more severe neurological symptoms, the EMS transport was the main mode of transport (versus used in 17 p. 100 of cases in 2002), and the delay of admission was significantly lower: 2 h 52 versus 5 h 10 (p<0.02). After adjustment on the main predictive factors, only patients with hemorrhagic strokes had a better outcome after the creation of the ASN. CONCLUSIONS: Creation of an ASN was associated with a significant decrease of admission and imaging delays, due to a strong collaboration with EMS, and with a better outcome for hemorrhagic stroke patients. Treatment with intravenous thrombolysis in the first 3 hours could be used widely and was efficient and safe. However, the creation of dedicated stroke units for all stroke patients remains necessary to improve quality of care and outcome.

[Epidemiology and management of stroke patients in emergency departments of the Centre region of France]. / Enquête observationnelle: les accidents vasculaires cérébraux aux urgences en région Centre (étude AVC Centre).

INTRODUCTION: Stroke is a leading cause of death and disability. Patients with suspected stroke are usually managed in emergency departments (ED). Stroke units must be created in our country, but only few French epidemiological data are available to define needs in stroke care. OBJECTIVE: A prospective study was planned to evaluate epidemiology and stroke care for patients with suspected stroke admitted in the 22 ED of our region in the center of France during a two-month period. METHODS: Patients with suspected stroke seen at the 22 ED were prospectively followed until discharge or one month after admission. Data on demographic characteristics, mode of transport, delay of arrival and imaging, clinical findings at arrival, department of admission, diagnosis, Rankin scale at day 7, in-hospital mortality, and outcome at a month were collected. A global statistical analysis and a comparison between rural and urban ED were performed. RESULTS: Five hundred and ninety-eight patients were included. Mean age was 75 years. Median admission delay was 4 hours and 52 minutes. Predominant mode of transport was a private ambulance. A CT scan was obtained in 91 p.cent of cases with a median delay of 2 hours and 30 minutes. Only a third of the patients were admitted in departments of Neurology. Final diagnosis was: ischemic stroke (61 p.cent), transient ischemic attack (16 p.cent), hemorrhagic stroke (10 p.cent), other vascular disease (3 p.cent), non vascular disease (10 p.cent). In-hospital mortality was 20 p.cent, factors significantly associated with death rate were elevated age and a Glasgow coma scale<10 at admission. Mean length of stay was 12 days for stroke patients. At one month, 63 percent of patients were discharged to their home, 28 percent were transferred to an institution or in a rehabilitation unit, and 15 percent were still hospitalized. Significant differences in stroke care were found between rural and urban ED. CONCLUSION: This prospective study provides epidemiological data for our region. Creation of stroke units and definition of acute stroke networks are necessary to improve stroke care.

Efficacy of epinephrine therapy in shock complicating pulmonary embolism.

A case of shock and pulmonary embolism in a 57-year-old woman is described in which hemodynamics were unresponsive both to usual therapy (volume loading, dobutamine, thrombolysis) and then to norepinephrine. Epinephrine proved to be effective, above all by strong beta 1-inotropic effect.

Rupture of pulmonary artery induced by Swan-Ganz catheter: success of coil embolization.

A 75-year-old woman suffered severe haemoptysis after insertion of a Swan-Ganz catheter in an intensive care unit. Control of the pulmonary artery haemorrhage was quickly and successfully achieved with stainless steel coils as the embolic material.

Buflomedil poisoning: five cases with cardiotoxicity.

OBJECTIVE: To report cardiotoxicity of buflomedil. SETTING: Medical intensive care unit of a university hospital. PATIENTS: Five patients admitted to the hospital since 1985 for buflomedil poisoning. The amount ingested was known for only three patients (3-10.8 g). RESULTS: The five young women were admitted to the hospital because of generalized seizures or myoclonic jerks. Cardiac arrest (asystole) occurred for two of them on admission, 1 and 3 h after ingestion. Electrocardiogram revealed atrio-ventricular and intraventricular conduction abnormalities, increased QT interval and flattened T wave, decreasing after sodium bicarbonate infusion in two cases. The patients received mechanical ventilation, gastric lavage, oral activated charcoal, and clonazepam or valproic acid for convulsions or myoclonic jerks. Epinephrine was administered for cardiac arrest. Sodium bicarbonate was infused in one patient on the basis of slightly prolonged QRS duration and in two patients due to cardiac arrest. Clinical outcome was good and without sequelae for all five patients after a few days in the intensive care unit. CONCLUSION: Clinical and electrocardiographic symptomatology of buflomedil poisoning suggests direct cardiotoxicity, which could be related to possible sodium antagonist properties.

Right-to-left interatrial shunt in ARDS: dramatic improvement in prone position.

The mechanisms leading to shunting through a patent foramen ovale include high right-sided cardiac pressures and respiratory factors due to mechanical ventilation and also anatomical changes in the right atrium as described in the platypnea-orthodeoxia syndrome. We report a patient with the adult respiratory distress syndrome (ARDS) who had a right-to-left atrial shunt which decreased in the prone position, after which oxygenation improved. The patient was admitted to the intensive care unit because of ARDS due to an invasive fungal infection. He had a history of chronic lymphocytic leukemia and paradoxical embolisms through a patent foramen ovale. Despite mechanical ventilation and antifungal treatment he developed severe ARDS. He was therefore turned to the prone position. Blood gas values improved dramatically (arterial oxygen tension/fractional inspired oxygen ratio increasing from 59 to 278 torr). Transcranial Doppler sonography was performed with bubble study, which confirmed a massive right-to-left shunt in the supine position and which instantaneously decreased in the prone position. This case suggests that a decrease in right-to-left shunt in patients who have a patent foramen ovale could partly explain the improvement in hypoxemia in the prone position.

Emphysematous pyelonephritis related to specific gas-forming Escherichia coli without diabetes mellitus.

A 60-year-old-man without a history of diabetes mellitus, or invasive manipulation or obstruction of the urinary tract was admitted for septic shock. Type I emphysematous pyelonephritis was clear in this case: gas within the renal parenchyma extending into the subcapsular region and the perirenal space was present on spiral computerised tomography (CT). Surgical nephrectomy was performed because biochemistry, urography and CT identified a damaged non-functioning left kidney. The outcome was favourable. All urine, blood and nephrectomy specimen cultures were positive for a specific Escherichia coli which produced a high level of gas compared to a reference E. coli strain in the same standard medium, despite the absence of diabetes mellitus. Certain strains of bacteria are able to produce high levels of nitrogen, carbon dioxide and hydrogen and such fermentation in the absence of a high glucose serum level might explain the acute gas-producing bacterial renal infection.

Genetic relationship between Escherichia coli strains isolated from the intestinal flora and those responsible for infectious diseases among patients hospitalized in intensive care units.

The exact origin of strains of Escherichia coli responsible for infectious diseases in intensive care units (ICUs) remains partly unknown. Our aim was to determine the nature of the link between strains from the intestinal flora of hospital staff, strains from the intestinal flora of patients hospitalized in ICUs and strains isolated from ICU patients with invasive diseases. For this purpose, 77 strains of E. coli were genetically characterized by exploring their entire genomes by random amplified polymorphism of DNA (RAPD), and by determining their phylogenetic position in ECOR (E. coli reference) groups, the virulence factors harboured (pap, sfa, afa, hly, aer and cnf) and their ability to mutate. The strains isolated from the intestinal flora of hospital staff were found to constitute a genetically heterogeneous population compared with the strains isolated from ICU carriers, which were highly clustered. The latter strains harboured numerous virulence factors, and 80% belonged to the group ECOR B2. The strains isolated from infected patients harboured fewer virulence factors than those from the ICU carriers, and only half belonged to ECOR B2. Moreover, these strains were more genetically related to strains from hospital staff than to strains from ICU carriers. Thus, the exogenous origin of the E. coli strains is probably almost as important as translocation from intestinal flora in ICUs. Moreover, a strong mutator phenotype had a minor, or no, role in the rapid adaptation to modifications in the ecological environment.

[Peripheral vascular complications of beta-blocking agents]. / Les complications vasculaires périphériques des bêta-bloquants.

Beta-blocking agents may induce vascular syndromes related to environmental temperature, accentuation of arterial diseases, gangrene of the extremities. Incidence and severity are variable with beta-blocking agent's properties: cardioselectivity, intrinsic sympathomimetic activity, cardiac depression, and with the patient's disease. The risk of complication is greater with hypertension disease because of the reduction of arterial compliance and quantitative and qualitative alterations of adrenergic receptors.

[Study of the plethysmographic amplification factor during vasodilator treatment. Healthy subject versus primary Raynaud phenomenon]. / Etude du facteur d'amplification en pléthysmographie sous traitement vasodilatateur. Sujet sain versus phénomène de Raynaud primaire.

Digital arterial circulation before and after administration of a vasodilator orally was explored by mercury gauge pulsed plethysmography and photoplethysmography in 12 patients with primary Raynaud's phenomenon and results compared with those of 10 healthy volunteers. The amplification factor F, ratio of amplitude in reactive hyperemia over amplitude at rest was determined in the index before and after 8 mg daily of dihydroergokryptine over 4 weeks. Before treatment, for each of the two plethysmographic technics, a significant increase in mean factor F values was noted in the patients with Raynaud's phenomenon when compared with healthy controls. This is due to a decline in digital arterial flow at rest. Using the mercury gauge plethysmograph, a significant reduction in factor F was observed after vasodilator treatment corresponding to an increase in digital flow at rest without increase in flow during hyperemia. Using photoplethysmography, no significant variation in factor F was noted after treatment. Mercury gauge plethysmography, which measures global digital blood flow appears to be a more sensitive method than photoplethysmography, which measures dermal and hypodermal blood flow, for follow-up of effects of vasodilator treatment on Raynaud's phenomenon.

[Malaria, pregnancy and prophylaxis]. / Paludisme, grossesse et prophylaxie.

We present two case histories. The first is a case of congenital malaria in a newborn whose Laotian mother immigrated into France 2 years ago. The other is a case of very severe malaria with fetal death in a 28 year old woman who was 8 months pregnant and who had come back to France from Gabon where she had lived for 2 years. The authors wish to draw attention to malaria brought into the country and how serious it can be, and suggest prophylactic measures to be applied for pregnant women and their newborn babies.

[Spontaneous rupture of the liver in pregnancy. Case study and review of the literature]. / La rupture "spontanée" du foie au cours de la grossesse. Etude d'un cas et revue de la littérature.

The authors report a case of "spontaneous" rupture of the liver in a woman of 35 years of age. This occurred immediately after post-partum eclampsia. It was not possible to obtain complete haemostasis using absorbable haemostatic compresses along the convexity of the liver. Complete cessation of bleeding only occurred after the operation when posterior pituitary abstracts had been transfused. The patient died 53 days after the initial procedure from a high gastro-intestinal haemorrhage. A study of the literature shows that this rare condition is most probably a complication of toxaemia of pregnancy but the physio-pathology of these liver lesions is ill-understood. The clinical picture is in two phases--the first corresponds to the formation of a sub-capsular haematoma and the second to the intra-peritoneal rupture of this haematoma. The prognosis for this condition is poor, the maternal mortality ranging from 56%-75%. The prognosis is linked to the speed with which the diagnosis is made and surgical intervention is carried out. This should be done before the capsule of the liver ruptures. Haemostasis is nearly always best obtained by using haemostatic compression with packs but haemostasis is not always adequate, particularly if there are several lesions in both lobes of the liver. This case history shows that using posterior pituitary abstracts in transfusion can be helpful.

[Importance of other therapeutic medications administered parenterally in severe acute asthma]. / Place des autres thérapeutiques médicamenteuses administrées par voie parentérale dans l'asthme aigu grave.

Following definition of severity criteria for asthmatic crisis, the effects of various drugs are analyzed: inhaled isoproterenol, inhaled metaproterenol alone or in combination with theophylline, inhaled albuterol, intravenous salbutamol, theophylline in severe acute asthma, corticosteroids in very severe acute asthma. In conclusion, nebulized beta agonists often administered in combination with atropinic drugs represent the best therapy for moderate acute asthma.

[Central pontine myelinolysis and hyponatremia]. / Myélinolyse centropontine et hyponatrémie.

Central pontine myelinolysis is a rare, but probably underreported, complication of the treatment of severe hyponatraemia. The typical presentation, with pseudobulbar palsy, quadriplegia and locked-in syndrome, made the diagnosis clinically possible in the two new cases reported. It was confirmed by computed tomography (CT). Serial CT scans in one case showed the chronological dissociation, as there was complete resolution of the pontine lucency several months after complete clinical recovery. Osmotic demyelination is suspected, but it remains unproven. Although recent evidence has suggested that too rapid a correction of severe hyponatraemia may be a possible factor, the two cases described occurred after slow correction. It would seem that rapid correction to a level of mild hyponatraemia (128-132 mmol.l-1) may be safe, reducing the morbidity of severe hyponatraemia without having central pontine myelinolysis.

[Hypercapnic status asthmaticus. Rapid reversibility of hypercapnia under medical treatment]. / Etat de mal asthmatique hypercapnique. Réversibilité rapide de l'hypercapnie sous traitement médical.

Fifty-four episodes of hypercapnic status asthmaticus (Pa CO2 50 mmHg or more) were treated with intravenous theophylline (6 mg/kg over 30 minutes, then 1 mg/kg/hour), intravenous hydrocortisone hemisuccinate (1 g then 500 mg 4-hourly) rehydration and oxygen therapy at a sufficient rate to obtain a Pa O2 of 80 mmHg or more. As a rule, improvement was rapid with a significant decrease of mean Pa CO2 values from 61 +/- 14 to 44.5 +/- 11.5 mmHg (P less than 0.001) over 2 hours. In only 3 cases was mechanical ventilation necessary. An initially high Pa CO2 value is not an absolute indication of mechanical ventilation. This method remains exceptional and can be avoided in most patients by the emergency medical treatment outlined above.

[The "COPD emergency 2003" study: a description of the hospital management of exacerbations of COPD]. / L'étude "urgence-BPCO 2003": une description de la prise en charge hospitalière des exacerbations de BPCO.

CURRENT SITUATION: Despite its impact on public health and numerous recommendations COPD remains under-diagnosed and its care pathways are not well known. Exacerbations are common presentations of the illness and contribute greatly to its impact on the health of the individual and the community. Despite this the methods of their management in hospital have not been precisely described. The purpose of the prospective study "COPD emergency 2003" is to describe these different aspects of the management of COPD and to study their determining factors. MATERIALS AND METHODS: It is a prospective, multicentre observational study of all the exacerbations of COPD managed as emergencies in public and private hospitals during a two-month period. Enrolment takes place between October 2003 and January 2004. The analysis will begin when the last patient has been discharged from hospital. EXPECTED RESULTS: The data obtained will allow identification of those aspects of the management of COPD and its exacerbations that are heterogeneous or in conflict with the current guidelines as well as the patient care pathways. In the future this study should help target the approaches aimed at improving the outcomes of patients suffering from COPD.

[Sub-coraco-clavicular approach of the axillary vein]. / Abord de la veine axillaire par voie sous-coraco-claviculaire.

This prospective study aimed to assess the value of the infraclavicular route for axillary vein catheterization in intensive care patients. Forty-six patients, 26 to 90 years old, were assigned to one of two groups according to their body mass index: obese (W/H2 < 30) and non obese (W/H2 < 30). The three operators were not previously trained for this particular technique, but were familiar with others. There were 55 attempts. Overall success rate was 47%; 8% in obese and 58% in non obese patients respectively. Perceiving axillary artery beats beneath the coracoid process increased significantly the success rate in non obese patients (94%; p < 0.01). There was one major complication (pneumothorax), due to a non respect of the technique. In conclusion, this technique requires a previous training period, and is not to be recommended in the obese. However, it is a convenient technique for non obese patients, in whom axillary artery beats can be detected.