[Hospital readmission induced by adverse drug reaction: a pilot study in a post-emergency unit of a French university hospital]. / Réhospitalisations d'origine médicamenteuse : étude pilote dans un service de post-urgences médicales d'un hôpital universitaire français.

PURPOSE: Adverse Drug Reactions (ADRs) leading to hospital admission was estimated to 3.6 to 21.7%. Despite its importance in terms of patients care, readmission to hospital due to ADRs remains poorly documented. The aim of our study was to investigate the rate and main characteristics of readmission for ADRs. METHODS: We undertook a retrospective study during two years (2011-2012) in the post-emergency unit of Toulouse university hospital (south western, France). We selected all unplanned hospitalization for acute disease and included all cases of patients admitted twice fold or more for ADRs. Characteristics of drug-induced ADRs were assessed according to appropriate use or not. RESULTS: Out of the 197 readmitted patients, 71 was related to ADRs (3.6%) corresponding to 17.8‰ patients-year. Mean age was 82.3 years and 67% were women. The most frequent ADRs found were vascular (n=41, 18.4%), gastro-intestinal (n=28, 12.6%), cardiac (n=28, 12.6%), neurologic (n=26, 11.7%), metabolic (n=26, 10.3%) and psychiatric (n=24, 9.9%). The drugs mainly involved were psychoactive, cardiovascular, digestive or antithrombotic agents. The context of occurrence of ADRs was related to inappropriate drug prescription in 56% of cases. A total of 24 patients were admitted twice for the same ADR and 2 others three times. For 22 patients (30.9%), the same drugs were involved. CONCLUSION: Our data show hospital readmission was due to ADRs in 3.6% of cases. In 1.1% of cases, the same couple "drug-ADR" was involved. Furthermore, in 56% of cases, repeated admissions are related to an inappropriate drug prescription.

Heat-related illnesses during the 2003 heat wave in an emergency service.

INTRODUCTION: This study describes patients admitted to an urban emergency service in France during the 2003 heat wave. Patients with heat-related illnesses were studied and comparison was made between those who died and survivors. METHODS: A retrospective study of about 760 records concerning 726 patients aged over 65 years admitted during August 2003 to a French emergency department. RESULTS: After review of the medical records, 42 patients had heat-related illnesses. Heat-related illnesses were not diagnosed by the treating physician in any of the patients. The patients were more likely to live in institutional care and used more psychotropic medications. Hyperthermia and acute cognitive impairment were the main reasons for admission to the emergency department. The patients had a higher heart rate and body temperature and more dyspnoea and central nervous system dysfunction than those without heat-related illnesses. Twelve patients (28.6%) with heat-related illnesses died in the emergency unit or after admission to hospital. Temperature, heart rate and plasma creatinine levels were higher in those who died than in survivors with heat-related illnesses. CONCLUSION: Heat-related illnesses are a group of underestimated and underdiagnosed conditions with high morbidity and mortality rates.

Relation between HLA DRB1 alleles and corticosteroid resistance in giant cell arteritis.

OBJECTIVE: To evaluate the clinical usefulness of genomic HLA typing during the first two years of established giant cell arteritis (GCA). METHODS: HLA typing was performed by PCR-SSO in 41 selected white patients with GCA confirmed by biopsy. Patient data were compared with those of a control group of 384 bone marrow donors (relative risk, p value and chi 2 test for each allele). Clinical features at onset and response to treatment over a two year period were evaluated in relation to the genetic pattern. RESULTS: DRB1*04 was significantly increased in the GCA group (frequency of 48.78% compared with 19.79% in controls, p < 0.001). The distribution of the DRB1*04 subtypes in the GCA group was similar to that in controls. No clinical or biological differences were found in association with HLA at the time of diagnosis. Over the two year follow up, nine patients presented resistance to corticosteroid treatment and eight of these (88.88%) had DRB1*04 (p < 0.001). CONCLUSIONS: GCA seems to be associated with HLA DRB1*04 (regardless of the subtype) and this association appears to be accompanied by corticosteroid resistance, suggesting that genomic typing may be useful to identify patients eligible for early alternative treatment to corticosteroid drugs.

Antineutrophil cytoplasmic antibodies (ANCA) in chronic graft-versus-host disease after allogeneic bone marrow transplantation.

We studied the usefulness of monitoring antineutrophil cytoplasmic antibodies (ANCA) in chronic graft-versus-host disease (cGVHD), a major complication of allogeneic bone marrow transplantation. Antigen-specific ELISA and indirect immunofluorescence (IIF) were used to search for ANCA in 47 allogeneic bone marrow graft recipients who developed cGVHD and in 43 who did not (controls). Eight patients exhibited ANCA IIF positivity in the cGVHD group, but none in the controls. Specificity was confirmed in antigen-specific assays in only two cGVHD patients, both showing antilactoferrin (anti-LF) activity. One of these patients was followed-up, and the antilactoferrin antibodies were found only at the time of active but limited cGVHD. Among three ANCA IIF-positive patients, two had antinuclear autoantibodies and three antineutrophil alloantibodies secondary to blood transfusion, which may have been responsible for false ANCA IIF positivity. It is concluded that ANCA determination is not useful in patients with cGVHD. Polyclonal activation of B lymphocytes could result in ANCA activity during cGVHD. False-positive ANCA could be due to allo-immunization following blood transfusion. Rare patients may present antilactoferrin antibodies of unknown clinical significance.

[Association of acquired Willebrand's disease, monoclonal gammopathy and angiodysplasia of the small bowel: a rare indication of high-dose intravenous immunoglobulins]. / Association maladie de Willebrand acquise--gammapathie monoclonale--angiodysplasie du grêle: une indication rare des immunoglobulines intraveineuses á forte dose.

Acquired von Willebrand's disease associated with a monoclonal gammopathy and angiodysplasia of the gut is a rare disorder. It is sometimes complicated by chronic intestinal bleeding and severe anemia, that is poorly responsive to usual treatments. We report such a new case that has been revealed by anemia, and characterised by the absence of the high-molecular weight multimers. The correction of the hemostasis defect and of anemia were related to the reappearance of the high-molecular weight multimers, that was achieved only after high-dose intravenous immunoglobulin courses. The perfusions were performed every 3 weeks for 2 years without loss of efficiency, that could be explained by the dissociation of immunoglobulin-von Willebrand's factor complex.