Incidence and predictive factors of depression among patients with HIV infection in Guadeloupe: 1988-2009.

A retrospective cohort study was conducted to determine the incidence and the predictive factors of depression in a cohort of 2737 HIV/AIDS-infected patients in Guadeloupe followed for a total of 8402 patient-years. The incidence rate of first observed depression was 2.2 per 100 person-years (95% confidence interval [CI], 1.9-2.6). A single failure Cox proportional hazards model showed that the 1997-2000 inclusion period (hazard ratio [HR] = 1.60; 95% CI = 1.10-2.40;p = 0.01), the 2001-2009 inclusion period (HR = 1.50; 95% CI = 1.02-2.40;p = 0.04), the more advanced CDC stage (HR = 2.30; 95% CI = 1.30-3.10;p = 0.000) and the annual frequency of visits > 10 (HR = 2.30; 95% CI = 1.70-3.30;p = 0.000) were associated with an increased risk of depression. Incidence of depression in this HIV cohort was high and the hazard function showed three peaks of depression (2, 7 and 12 years). Physicians should be vigilant to psychological distress throughout life with HIV.

What is AIDS in Guadeloupe? A descriptive and comparative study.

Since the pathogen ecology differs between Caribbean regions, specific differences in the most frequent clinical presentations of acquired immunodeficiency syndrome (AIDS) may be expected. We therefore conducted the present retrospective cohort study in order to describe the main AIDS-defining events in Guadeloupe and to compare them with those observed in Metropolitan France and in French Guiana. We discuss the local pathogen ecology, the diagnostic limitations of hospitals in overseas territories and the drivers of the epidemic.

Bacteremia caused by Aeromonas species [corrected] complex in the Caribbean Islands of Martinique and Guadeloupe.

Aeromonas species are Gram-negative bacilli of the water environment whose survival appears facilitated by warm climates. There have been no reports on Aeromonas species in the [corrected] Caribbean to date. Our aim was to describe clinical and bacteriological features in patients presenting with such bacteremia in Martinique and Guadeloupe. During a 14-year period, we retrospectively identified 37 patients. The mean age was 55 years and in 89% of cases underlying disease such as digestive diseases, cutaneous wounds, and malignancy were identified. One case was related to severe strongyloidiasis and one with snake bite. Polymicrobial bacteremia was identified in 38%, essentially with Enterobacteriaceae. All Aeromonas isolates were resistant to amoxicillin but extended-spectrum beta-lactam and fluoroquinolone were active against more than 95%. During hospitalization 10 patients died (27%). Older age, occurrence of multiorgan failure, and impaired renal function were associated with in-hospital mortality.

An 18-case outbreak of drug-resistant Pseudomonas aeruginosa bacteriemia in hematology patients.

We retrospectively identified an outbreak of 18 episodes of P. aeruginosa bacteriemia in 17 patients with hematologic malignancies in 2004. All strains were ticarcillin I/R, 77% ciprofloxacin I/R, 72% ceftazidime I/R, 72% amikacin I/R and 50% imipenem I/R. The outbreak was multiclonal. Colistin was employed for documented therapy in ten cases including seven in which it was the only active drug. Outcomes were resolution of infection in 12 out of 18 episodes (67%), and death in six cases, five (25%) of which were attributable to the infection. Colistin was useful even in highly resistant strains and the efficacy of antibacterial therapy was similar (57%)in bacteriemia due to strains only susceptible to colistin.

Hospital-acquired pneumonia: risk factors for antimicrobial-resistant causative pathogens in critically ill patients.

STUDY OBJECTIVES: To determine factors associated with antimicrobial-resistant hospital-acquired pneumonia (AR-HAP), to build an algorithm evaluating the risk for such a pneumonia, and to test this algorithm. DESIGN: Combined observational and validation cohorts over two periods: January 1994 to December 1999, and January 2000 to March 2001. SETTING: One ICU from a university-affiliated urban teaching hospital. PATIENTS: One hundred twenty-four patients in the observational cohort and 26 patients in the validation cohort exhibiting bacteriologically documented hospital-acquired pneumonia (HAP). INTERVENTIONS: Prospective data collection and multivariate analysis using the chi(2) automatic interaction and detection technique. RESULTS: In the observational cohort, 39 antimicrobial-resistant bacteria were incriminated in 37 patients (30%). Multivariate analysis identified four independent variables allowing a binary stratification of risk. According to the presence or absence of prior antimicrobial treatment, neurologic disturbances on ICU admission, aspiration on ICU admission, and time elapsed between ICU admission and the onset of pneumonia, we were able to identify and separate patients at high, low, or even no risk for acquiring AR-HAP. In the validation cohort, nine antimicrobial-resistant bacteria were incriminated in nine patients (34.6%). In this cohort, the algorithm performed well allowing the identification of null risk categories: the absence of prior antimicrobial treatment, the presence of prior antimicrobial treatment with neurologic disturbances on ICU admission and an early-onset pneumonia, and the presence of prior antimicrobial treatment without neurologic disturbances but with aspiration on ICU admission were always associated with antimicrobial-susceptible HAP. CONCLUSION: We developed and tested a binary algorithm allowing the identification of patients at low risk for acquiring AR-HAP. An antibiotic strategy including an initial antimicrobial treatment guided by such an algorithm, followed, if possible, by a de-escalation when antimicrobial data are available, could increase the administration of adequate initial antimicrobial treatment and help prevent the emergence of antibiotic resistance in the ICU.

Ventilation-induced lung injury is associated with an increase in gut permeability.

Mechanical ventilation is associated with several harmful effects mainly related to high tidal volumes (Vt). Ventilator-induced lung injury can be responsible for an increased production of inflammatory mediators. We evaluated remote consequences on the gut of lung triggered inflammatory response, neutralizing anti-tumor necrosis factor (TNF) antibody was administered to assess the role of TNF in lung and gut permeability changes. Rats were anesthetized and ventilated for 2 h. A control group (Con: Vt = 10 mL/kg) was compared with a high Vt group (HV: Vt = 30 ml/kg). One microCi of I125-labeled human serum albumin was injected to measure extravascular albumin space. Gut permeability was evaluated by plasma-to-lumen ratio leakage of I125 human serum albumin. Extravascular albumin space increased in the HV group from 446 +/- 50 microL to 2783 +/- 887 microL. Gut index of permeability increased from 5.1 +/- 1.2 to 14.2 +/- 4.9. Anti-TNF antibody prevented both lung and gut increase in permeability. High tidal volume ventilation resulted in an increase in lung edema and gut permeability, antagonism of TNF with neutralizing antibodies abrogated the increase in gut permeability as well as lung edema.

Bactericidal activity of three beta-lactams alone or in combination with a beta-lactamase inhibitor and two aminoglycosides against Klebsiella pneumoniae harboring extended-spectrum beta-lactamases.

OBJECTIVE: To study the bactericidal activity of beta-lactam antibiotics (imipenem, cefepime, cefpirome) alone or in combination with a beta-lactamase inhibitor (sulbactam) in the presence or absence of aminoglycoside (amikacin or isepamicin) against Klebsiella pneumoniae strains producing extended-spectrum beta-lactamases (ESBLs). METHODS: We characterized 10 strains by means of analytic isoelectric focusing and pulsed-field gel electrophoresis. The ESBLs produced by these strains were derived from either TEM (TEM-1, TEM-2) or SHV-1. The killing-curve method was used for this bacterial investigation. Bacteria (final inoculum 5x105 CFU/mL) were incubated with antibiotics at clinical concentrations obtained in vivo. RESULTS: All the combinations with cefepime or cefpirome + sulbactam were bactericidal, with a 4 log10 decrease being obtained within 6 h without regrowth at 24 h, whereas imipenem alone, and combinations, gave a bactericidal effect within 6 h. The two cephalosporins alone decreased the inoculum of 4 log10 at 6 h but regrowth was observed at 24 h. When the aminoglycoside was added, this bactericidal effect was obtained within 3 h with amikacin and within 1 h with isepamicin. CONCLUSIONS: Cefepime + sulbactam or cefpirome + sulbactam may be an alternative to imipenem for the treatment of patients with ESBL-producing K. pneumoniae. Aminoglycosides are often associated in nosocomial infections due to ESBL-producing K. pneumoniae: isepamicin acted faster than amikacin, but both worked well. To conclude, it may be prudent to avoid extended-spectrum cephalosporins as single agent when treating serious infections due to ESBL-producing K. pneumoniae. Addition of a beta-lactamase inhibitor such as sulbactam +/- aminoglycoside is advisable to avoid failure of treatment.

Imported malaria: presentation and outcome of 111 cases.

OBJECTIVE: To evaluate the presentation and outcome of imported malaria. PATIENTS AND METHODS: Retrospective charts review of hospitalized patients with smear-proven malaria from January 1989 to October 1994. RESULTS: Of a total of 111 cases, 95 were caused by Plasmodium falciparum. Chemoprophylaxis was used in 57% of patients but only 41% were compliant. Parasitemia ranged from 0.1% to 22%. Clinical and biological signs at admission were unspecific. In all cases where both platelets and C-reactive protein were measured, at least one abnormality was noted. More than two WHO gravity criteria were present in 14 cases. Outcome was marked by two deaths and 18 adverse drug reactions. Plasmodium falciparum was associated to only one independent factor in multivariate analysis: symptom onset less than 30 days after return. Chemoprophylaxis use did not modify clinical presentation, mean parasitemia or outcome. CONCLUSIONS: P. falciparum is the most usual cause of imported malaria in France. Normal platelet count and C-reactive protein value probably exclude the diagnosis of malaria in febrile travelers.