Hypnosedation, a new method of anesthesia for cervical endocrine surgery. Prospective randomized study

Retrospective studies have confirmed the feasibility and safety of thyroid and parathyroid procedures performed under hypnoanesthesia (hypnosis, local anesthesia and minimal conscious sedation) as sole method of anesthesia. This very effective technique seems to provide physiological, psychological and economic benefits for the patient. STUDY AIM: To assess, by means of a prospective randomized study, the advantages of hypnosedation as an alternative to general anesthesia in terms of clinical and laboratory parameters. PATIENTS AND METHODS: Twenty patients operated under hypnoanesthesia were compared to 20 patients operated under conventional anesthesia. The two groups were compared in terms of inflammatory, neuroendocrine, hemodynamic and immunologic parameters and postoperative course (pain, fatigue, muscle strength and stress). RESULTS: No clinical or demographic differences were observed between the two groups. Operative times, bleeding, weight of specimens, and surgical comfort were similar. Significant differences in terms of inflammatory response and hemodynamic parameters were observed in favor of hypnoanesthesia. Neuroendocrine and immunological parameters were similar. Patients of the hypnoanesthesia group had significantly less postoperative pain. Postoperative fatigue syndrome and convalescence were significantly improved in these patients. CONCLUSION: This study confirms that, in our hands, hypnosedation presents real advantages over general anesthesia, in patients undergoing thyroid surgery.     

Serum Aspergillus galactomannan for the management of disseminated histoplasmosis in AIDS

Abstract. Disseminated histoplasmosis is an emerging infection in patients with cellular immune deficiency in non-endemic countries, caused by the migration from endemic regions and the development of travels. Diagnosis can be challenging in this context because rapid diagnostic tools such as Histoplasma antigen detection or appropriate molecular tools are generally unavailable, serology is often negative in immunosuppressed patients, and isolation of the fungus from cultures often takes several weeks. Here, we report the contribution of galactomannan serum detection for the management of an HIV-infected patient with disseminated histoplasmosis.     

Healthcare-associated mucormycosis

Mucormycosis is a severe emerging invasive fungal infection that occurs as a consequence of environmental exposure. We exhaustively reviewed all the cases of mucormycosis (European Organisation for Research and Treatment of Cancer/Mycoses Study Group 2008 criteria) attributed to healthcare procedures that occurred between 1970 and 2008. A total of 169 cases were studied (29% children, 61% male). Major underlying diseases were solid organ transplantation (24%), diabetes mellitus (22%), and severe prematurity (21%). Skin was the most common localization (57%), followed by gastrointestinal tract (15%). Culture results were available in 75% (92% positive), and results of histological examination were positive in 95%. Rhizopus was the most frequent genus (43%). Infection portal of entry included surgery and presence of medical devices such as catheters or adhesive tape. Outbreaks and clusters were related to adhesive bandages (19 cases), wooden tongue depressors (n = 5), ostomy bags (n = 2), water circuitry damage (n = 2), and adjacent building construction (n = 5). Thorough investigations are mandatory to identify healthcare-associated mucormycosis, notably in neonatology, hematological, and transplantation units.     

DROP-OUT FROM CHRONIC PAIN TREATMENT PROGRAMMES: IS RANDOMIZATION JUSTIFIED IN BIOPSYCHOSOCIAL APPROACHES?

ObjectiveTo identify profiles of patients who are at risk of dropping out from biopsychosocial approaches to chronic pain management.PatientsA total of 575 patients were included in the study. Of these, 203 were randomized into 4 treatment groups: self-hypnosis/self-care; music/self-care; self-care; and psychoeducation/cognitive behavioural therapy. The remaining 372 patients were not randomized, as they presented with the demand to learn self-hypnosis/self-care, and therefore were termed a “self-hypnosis/self-care demanders” group.MethodsSocio-demographics and behavioural data were included in the analyses. Univariates analyses, comparing early drop-outs (never attended treatment), late drop-outs (6/9 sessions’ treatment) and continuers were conducted in order to select variables to include in a multivariate logistic regression.ResultsUnivariate analyses yielded 8 variables, out of 18 potential predictors for drop-out, which were eligible for inclusion in the multivariate logistic regression. The model showed that having an intermediate or high educational level protects against dropping out early or late in the pain management process. Having to wait for more than 4 months before starting the treatment increases the risk of never starting it. Being randomized increases the risk of never starting the treatment.ConclusionIn a context in which randomization is considered a “gold standard” in evidence-based practice, these results indicate that this very principle could be deleterious to pain management in patients with chronic pain.LAY ABSTRACTThe aim of this study was to identify profiles of patients who are at risk of dropping out from biopsychosocial approaches to chronic pain management. A total of 575 patients were included in the study. Of these, 203 patients were randomized into 4 treatment groups: self-hypnosis/self-care; music/self-care; self-care; psychoeducation/cognitive behavioural therapy. The remaining 372 patients were not randomized, as they presented with the demand to learn self-hypnosis/self-care, and hence formed a “self-hypnosis/self-care demanders” group. Analyses of socio-demographics and behavioural data were conducted, comparing early drop-outs (never attended treatment), late drop-outs (6/9 sessions’ treatment) and continuers. Results showed that having an intermediate or high educational level protects against dropping out early or late in the management process. Having to wait for more than 4 months before starting the treatment, and being randomized, increases the risk of never starting it. Thus, in a context in which randomization is considered as a “gold standard” in evidence-based practice, these results indicate that this very principle could be deleterious to pain management in patients with chronic pain.Key words: chronic pain, non-pharmacological treatment, randomization, drop-out, loss to follow-up, attrition

Chronic pain is a complex disorder in which pain appears persistent and prolonged (> 3 months) and includes biological, psychological and socio-professional factors that undermine patients’ everyday life. Patients and healthcare providers are increasingly turning to non-pharmacological treatments, such as hypnosis and music therapy, combined with cognitive behavioural therapy (CBT) (1). The efficacy of these treatment in managing chronic pain has been demonstrated (2–4).A major problem in clinical research is drop-out, which ranges from 5% to 46%, in chronic pain management, depending on the study (5). The first issue concerns the definition of drop-out, since this varies between authors: some regard drop-out as patients ending therapy before the agreed-end-of-treatment (6), others consider it as not attending therapy sessions even though patients have agreed to attend (7). The second issue is that few clinical studies in the field of chronic pain take drop-out into account, thus generating a bias in the overall results of clinical trials investigating the efficacy of such treatments (8). The lack of studies and the disagreement regarding definitions lead to a range of results in the study of drop-out predictors in chronic pain. Some authors have highlighted that a low educational level increases the risk of dropping out from therapy (cohort study (9)), while others have shown the contrary (randomized trial (10)). The same controversy can be seen when considering age, sex and personality (systematic review (5); randomized trial (10); retrospective study (11); non-randomized trial (12)). Predictors outside of patient-related factors have mostly been studied in the mental health literature. As the management of chronic pain and mental health is relatively similar, consideration of these factors seems relevant. A meta-analysis showed that, in psychotherapy settings, the therapist expertise had an influence on drop-out. The results demonstrated that when trainees (pre-degree attainment) lead the group therapy, patients tended to be more likely to drop-out (13). Another meta-analysis showed that patients’ motivational level predicted drop-out from psychotherapy (14). A further barrier to completing treatments is the waiting period between initial contact and the effective start of the treatment (retrospective study (15)). Another retrospective study highlighted that the longer the patients in a substance abuse treatment programme had to wait until the onset of treatment (≥8 days), the more likely they were not to attend the first session of the programme (16).Given the lack of consensus, a better understanding of the profile of drop-outs and contextual risk factors, is essential in order to prevent this phenomenon, enhance treatment adherence and, consequently, ameliorate the study of treatment efficacy in chronic pain.The aim of this study was to retrospectively identify patient- and context-related factors to explain drop-out from randomized biopsychosocial-based treatment programmes.     

Brain function in the vegetative state

Positron emission tomography (PET) techniques represent a useful tool to better understand the residual brain function in vegetative state patients. It has been shown that overall cerebral metabolic rates for glucose are massively reduced in this condition. However, the recovery of consciousness from vegetative state is not always associated with substantial changes in global metabolism. This finding led us to hypothesize that some vegetative patients are unconscious not just because of a global loss of neuronal function, but rather due to an altered activity in some critical brain regions and to the abolished functional connections between them. We used voxel-based Statistical Parametric Mapping (SPM) approaches to characterize the functional neuroanatomy of the vegetative state. The most dysfunctional brain regions were bilateral frontal and parieto-temporal associative cortices. Despite the metabolic impairment, external stimulation still induced a significant neuronal activation (i.e., change in blood flow) in vegetative patients as shown by both auditory click stimuli and noxious somatosensory stimuli. However, this activation was limited to primary cortices and dissociated from higher-order associative cortices, thought to be necessary for conscious perception. Finally, we demonstrated that vegetative patients have impaired functional connections between distant cortical areas and between the thalami and the cortex and, more importantly, that recovery of consciousness is paralleled by a restoration of this cortico-thalamo-cortical interaction.     

Staphylococcus aureus isolates with reduced susceptibility to glycopeptides belong to accessory gene regulator group I or II

We used multiplex PCR to determine the agr group membership of 18 European glycopeptide heterointermediate and intermediate-resistant Staphylococcus aureus strains. Of the 15 agr group I strains, 13 were resistant and 2 were susceptible to methicillin. The remaining three strains, like the United States and Japanese control strains, belonged to agr group II.     

Cerebral processing in the minimally conscious state

We studied a patient in a minimally conscious state using PET and cognitive evoked potentials. Cerebral metabolism was below half of normal values. Auditory stimuli with emotional valence (infant cries and the patient's own name) induced a much more widespread activation than did meaningless noise; the activation pattern was comparable with that previously obtained in controls. Cognitive potentials showed preserved P300 responses to the patient's own name.     

Quinonic derivatives active against <Emphasis Type="Italic">Toxoplasma gondii</Emphasis>

Quinonic derivatives were tested against a virulent RH strain of Toxoplasma gondii maintained in cell culture in THP-1, a human myelomonocytic cell line. The derivatives were tested at various doses (0.5-4 microg/ml) and compared with the reference molecules clindamycine, sulfadiazine, pyrimethamine and atovaquone. The percentage of parasite growth inhibition was observed after 72 h of incubation. The tested derivatives are bicyclic, tricyclic or tetracyclic quinones. Eight of these compounds exhibit over 70% inhibition of parasite growth; and two were nearly equipotent to pyrimethamine. These data indicate that the most active compounds against the RH strain of T. gondii are bis-heterocyclic quinones.     

Increased cerebral functional connectivity underlying the antinociceptive effects of hypnosis

The neural mechanisms underlying the antinociceptive effects of hypnosis are not well understood. Using positron emission tomography (PET), we recently showed that the activity in the anterior cingulate cortex (midcingulate area 24a') covaries with the hypnosis-induced reduction of affective and sensory responses to noxious thermal stimulation [Faymonville et al., Anesthesiology 92 (2000) 1257-1267]. In the present study, we assessed changes in cerebral functional connectivity related to the hypnotic state, compared to simple distraction and the resting state. Nineteen highly hypnotizable right-handed volunteers were studied using H2(15)O-PET. The experimental conditions were hot noxious or warm non-noxious stimulation of the right hand during resting state, mental imagery and hypnotic state. Using a psychophysiological interaction analysis, we identified brain areas that would respond to noxious stimulations under the modulatory action of the midcingulate cortex in, and only in, the hypnotic state. Hypnosis, compared to the resting state, reduced pain perception by 50%. Pain perception during rest and mental imagery was not significantly different. Analysis of PET data showed that the hypnotic state, compared to normal alertness (i.e., rest and mental imagery), significantly enhanced the functional modulation between midcingulate cortex and a large neural network encompassing bilateral insula, pregenual anterior cingulate cortex, pre-supplementary motor area, right prefrontal cortex and striatum, thalamus and brainstem. These findings point to a critical role for the midcingulate cortex in the modulation of a large cortical and subcortical network underlying its influence on sensory, affective, cognitive and behavioral aspects of nociception, in the specific context of hypnosis.