Thoracic ultrasound influences physiotherapist's clinical decision-making in respiratory management of critical care patients: a multicentre cohort study.

BACKGROUND: The potential influence of thoracic ultrasound on clinical decision-making by physiotherapists has never been studied. The aim of this study was to assess the impact of thoracic ultrasound on clinical decision-making by physiotherapists for critical care patients. METHODS: This prospective, observational multicentre study was conducted between May 2017 and November 2020 in four intensive care units in France and Australia. All hypoxemic patients consecutively admitted were enrolled. The primary outcome was the net reclassification improvement (NRI), quantifying how well the new model (physiotherapist's clinical decision-making including thoracic ultrasound) reclassifies subjects as compared with an old model (clinical assessment). Secondary outcomes were the factors associated with diagnostic concordance and physiotherapy treatment modification. RESULTS: A total of 151 patients were included in the analysis. The NRI for the modification of physiotherapist's clinical decisions was-40% (95% CI (-56 to -22%), p=0.02). Among the cases in which treatment was changed after ultrasound, 41% of changes were major (n=38). Using a multivariate analysis, the physiotherapist's confidence in their clinical diagnosis was associated with diagnostic concordance (adjusted OR=3.28 95% CI (1.30 to 8.71); p=0.014). Clinical diagnosis involving non-parenchymal conditions and clinical signs reflecting abolished lung ventilation were associated with diagnostic discordance (adjusted OR=0.06 95% CI (0.01 to 0.26), p<0.001; adjusted OR=0.26 95% CI (0.09 to 0.69), p=0.008; respectively). CONCLUSION: Thoracic ultrasound has a high impact on the clinical decision-making process by physiotherapists for critical care patients. TRIAL REGISTRATION NUMBER: NCT02881814; https://clinicaltrials.gov.

Difficult peripheral venous access: clinical evaluation of a catheter inserted with the Seldinger method under ultrasound guidance.

PURPOSE: A preliminary observational study was undertaken to evaluate the risk of failure of ultrasound-guided peripheral intravenous catheterization of a deep arm vein for a maximum of 7 days, after peripheral intravenous (PIV) cannulation failure. METHODS: This prospective study included patients referred to the intensive care unit for placement of a central line, a polyurethane cannula commercialized for arterial catheterization was used for peripheral venous cannulation. Catheter length and diameter were chosen based on preliminary ultrasound measurements of vein diameter and skin-vein distance. RESULTS: Catheterization was successful for all 29 patients. Mean vein diameter was 0.42 ± 0.39 cm; mean vein depth was 0.94 ± 0.52 cm. Mean catheter duration was 6 (median 7) days. Two occluded catheters were removed prematurely. No thrombophlebitis, catheter infection, or extravasation was observed. CONCLUSION: Our results suggest that catheters inserted with the Seldinger method are adapted to prolonged peripheral deep-vein infusion. Ultrasound can play a role in catheter monitoring by identifying early thrombosis formation.

Evaluation of blind nasotracheal suctioning and non-bronchoscopic mini-bronchoalveolar lavage in critically ill patients with infectious pneumonia: a preliminary study.

BACKGROUND: We evaluated the diagnostic performance and safety of combined blind nasotracheal suctioning and non-bronchoscopic mini-bronchoalveolar lavage (mini-BAL) to obtain respiratory secretion specimens from spontaneously breathing, non-intubated patients with infectious pneumonia in intensive care. METHODS: Patients suspected of having infectious pneumonia were included prospectively. Three samples were obtained: expectorated sputum, nasotracheal suctioning, and mini-BAL via a double telescopic catheter (Combicath). Under local anesthesia, nasotracheal suctioning was done according to standard recommendations. Then mini-BAL was performed; the bronchial catheter serves as a guide for the mini-BAL catheter, and tracheal position is verified via colorimetric capnography. RESULTS: We included 36 subjects (29 men, median age 69 y, median Simplified Acute Physiology Score II 32), of which 32 (89%) underwent nasotracheal suctioning and mini-BAL, and from 13 (36%) we collected expectorated sputum. Based on colorimetric capnography confirmation of the tracheal position, 75% (24/32) of the successful combined procedures were achieved on the first attempt. The median duration of the combined procedure was 7 min. Bacterial pneumonia was diagnosed in 24/36 (67%) subjects, among whom 21 (88%) had undergone successful nasotracheal suctioning and mini-BAL, respectively, for 8/21 (38% [95% CI 0.17-0.58%] and 14/21 (67% [95% CI 0.46-0.86%]). Mini-BAL diagnosed a significantly higher percentage of bacterial pneumonias than did nasotracheal suctioning. Expectorated sputum yielded no diagnoses. CONCLUSIONS: Blind nasotracheal suctioning confirmed via colorimetric capnography allows microbiological diagnosis, and can be enhanced by non-bronchoscopic mini-BAL. Colorimetric capnography helps confirm bronchial tube position. Non-bronchoscopic mini-BAL is a novel and feasible way to collect bronchial secretions without fibroscopy. (ClinicalTrials.gov NCT00763620.).

A communication strategy and brochure for relatives of patients dying in the ICU.

BACKGROUND: There is a need for close communication with relatives of patients dying in the intensive care unit (ICU). We evaluated a format that included a proactive end-of-life conference and a brochure to see whether it could lessen the effects of bereavement. METHODS: Family members of 126 patients dying in 22 ICUs in France were randomly assigned to the intervention format or to the customary end-of-life conference. Participants were interviewed by telephone 90 days after the death with the use of the Impact of Event Scale (IES; scores range from 0, indicating no symptoms, to 75, indicating severe symptoms related to post-traumatic stress disorder [PTSD]) and the Hospital Anxiety and Depression Scale (HADS; subscale scores range from 0, indicating no distress, to 21, indicating maximum distress). RESULTS: Participants in the intervention group had longer conferences than those in the control group (median, 30 minutes [interquartile range, 19 to 45] vs. 20 minutes [interquartile range, 15 to 30]; P<0.001) and spent more of the time talking (median, 14 minutes [interquartile range, 8 to 20] vs. 5 minutes [interquartile range, 5 to 10]). On day 90, the 56 participants in the intervention group who responded to the telephone interview had a significantly lower median IES score than the 52 participants in the control group (27 vs. 39, P=0.02) and a lower prevalence of PTSD-related symptoms (45% vs. 69%, P=0.01). The median HADS score was also lower in the intervention group (11, vs. 17 in the control group; P=0.004), and symptoms of both anxiety and depression were less prevalent (anxiety, 45% vs. 67%; P=0.02; depression, 29% vs. 56%; P=0.003). CONCLUSIONS: Providing relatives of patients who are dying in the ICU with a brochure on bereavement and using a proactive communication strategy that includes longer conferences and more time for family members to talk may lessen the burden of bereavement. (ClinicalTrials.gov number, NCT00331877.)

Determinants of mortality for adults with cystic fibrosis admitted in Intensive Care Unit: a multicenter study.

BACKGROUND: Intensive care unit (ICU) admission of adults with cystic fibrosis (CF) is controversial because of poor outcome. This appraisal needs re-evaluation following recent changes in both CF management and ICU daily practice. Objectives were to determine long-term outcome of adults with CF admitted in ICU and to identify prognostic factors. METHODS: Retrospective multicenter study of 60 ICU hospitalizations for 42 adult CF patients admitted between 2000 and 2003. Reason for ICU admission, ventilatory support provided and one-year survival were recorded. Multiple logistic analysis was used to determine predictors of mortality. RESULTS: Prior to ICU admission, all patients (mean age 28.1 +/- 8 yr) had a severe lung disease (mean FEV1 28 +/- 12% predicted; mean PaCO2 47 +/- 9 mmHg). Main reason for ICU hospitalization was pulmonary infective exacerbation (40/60). At admission, noninvasive ventilation was used in 57% of cases and was successful in 67% of patients. Endotracheal intubation was implemented in 19 episodes. Overall ICU mortality rate was 14%. One year after ICU discharge, 10 of the 28 survivors have been lung transplanted. Among recognized markers of CF disease severity, only the annual FEV1 loss was associated with a poor outcome (HR = 1.47 [1.18-1.85], p = 0.001). SAPSII (HR = 1.08 [1.03-1.12], p < 0.001) and endotracheal intubation (HR = 16.60 [4.35-63.34], p < 0.001) were identified as strong independent predictors of mortality. CONCLUSION: Despite advanced lung disease, adult patients with CF admitted in ICU have high survival rate. Endotracheal intubation is associated with a poor prognosis and should be used as the last alternative. Although efforts have to be made in selecting patients with CF likely to benefit from ICU resources, ICU admission of these patients should be considered.

The importance of Toll-like receptor 2 polymorphisms in severe infections.

Toll-like receptor 2 (TLR2) is a member of the TLR family, which plays a central role in the innate immune response to a wide variety of microorganisms. Animal studies have shown that TLR2-knockout mice are more susceptible to septicemia due to Staphylococcus aureus and Listeria monocytogenes, meningitis due to Streptococcus pneumoniae, and infection with Mycobacterium tuberculosis, suggesting that functional TLR2 polymorphisms may impair host response to a certain spectrum of microbial pathogens. In humans, 2 polymorphisms in the exon part of TLR2, which attenuate receptor signaling, enhance the risk of acute severe infections, tuberculosis, and leprosy. Because gram-positive bacteria have became the first cause of severe infections, including septic shock, knowledge of the role that alteration or lack of TLR2 function plays in the pathogenesis of infectious diseases could contribute to the design of new therapeutic strategies, including prevention, pharmacological intervention, and vaccine development.