A universal predictive and mechanistic urinary peptide signature in acute kidney injury.

BACKGROUND: The delayed diagnosis of acute kidney injury (AKI) episodes and the lack of specificity of current single AKI biomarkers hamper its management. Urinary peptidome analysis may help to identify early molecular changes in AKI and grasp its complexity to identify potential targetable molecular pathways. METHODS: In derivation and validation cohorts totalizing 1170 major cardiac bypass surgery patients and in an external cohort of 1569 intensive care unit (ICU) patients, a peptide-based score predictive of AKI (7-day KDIGO classification) was developed, validated, and compared to the reference biomarker urinary NGAL and NephroCheck and clinical scores. RESULTS: A set of 204 urinary peptides derived from 48 proteins related to hemolysis, inflammation, immune cells trafficking, innate immunity, and cell growth and survival was identified and validated for the early discrimination (< 4 h) of patients according to their risk to develop AKI (OR 6.13 [3.96-9.59], p < 0.001) outperforming reference biomarkers (urinary NGAL and [IGFBP7].[TIMP2] product) and clinical scores. In an external cohort of 1569 ICU patients, performances of the signature were similar (OR 5.92 [4.73-7.45], p < 0.001), and it was also associated with the in-hospital mortality (OR 2.62 [2.05-3.38], p < 0.001). CONCLUSIONS: An overarching AKI physiopathology-driven urinary peptide signature shows significant promise for identifying, at an early stage, patients who will progress to AKI and thus to develop tailored treatments for this frequent and life-threatening condition. Performance of the urine peptide signature is as high as or higher than that of single biomarkers but adds mechanistic information that may help to discriminate sub-phenotypes of AKI offering new therapeutic avenues.

Assessing feasibility and satisfaction in third-trimester pre-anaesthetic teleconsultations: A prospective observational study.

Background and Aims: Pregnancy presents risks, particularly for women with pre-existing health problems. Pre-anaesthetic consultations can help anticipate these risks and establish a medical management strategy on the delivery day. While teleconsultations gained popularity during the coronavirus disease 2019 (COVID-19) pandemic, research on pre-anaesthetic teleconsultations during pregnancy is limited. This study aimed to assess patient satisfaction and physician perception of teleconsultations for third-trimester pre-anaesthetic consultations. Methods: A prospective observational study included pregnant women who opted for teleconsultations for pre-anaesthetic consultations. Patient satisfaction was assessed using Likert scale questions and the System Use Scale. Anaesthetist satisfaction was evaluated using a Likert scale and by considering changes in anaesthetic techniques and missing clinical data in the pre-anaesthetic assessment. Data analysis utilised SPSS Statistics for Windows, Version 20.0. encompassing descriptive statistics, hypothesis testing and odds ratio calculations. This approach explored the correlation between patient and anaesthetist satisfaction and pertinent risk factors. Results: The study enroled 99 patients, with 85% expressing satisfaction and high satisfaction on the Likert scale and 88% finding the teleconsultation acceptable based on the System Use Scale (score ≥ 70). Anaesthetists reported being satisfied with the pre-anaesthetic consultations in 94% of cases. Conclusion: This study demonstrates the feasibility and effectiveness of telemedicine consultations in obstetric anaesthesia, showing high patient and anaesthetist satisfaction rates.

Suicide attempt with self-made Taxus baccata leaf capsules: survival following the application of extracorporeal membrane oxygenation for ventricular arrythmia and refractory cardiogenic shock.

CONTEXT: Yew intoxication has been known for many years; high dose ingestion of Taxus baccata leads to cardiac toxicity mediated by calcium and sodium channel blocking properties. We present a case report of a patient who attempted suicide after T. baccata ingestion, causing refractory cardiogenic shock requiring temporary circulatory assistance by veno-arterial extra corporeal membrane oxygenation (VA ECMO). CASE DETAILS: A 28-year-old man was admitted to the critical care unit of a university hospital for arrhythmia after ingestion of self-made T. baccata leaf capsules. He rapidly developed cardiovascular collapse requiring mechanical ventilation, high dose intravenous catecholamines and electrical cardioversion. A femoro-femoral VA ECMO was implanted due to severe biventricular dysfunction and ventricular arrhythmia, associated with continuous renal replacement therapy. Taxol A, taxol B and baccatin III were detected and measured in both blood and urine samples by high-performance liquid chromatography tandem mass spectrometry, and kinetics suggested urinary excretion. Two days after hospital admission, VA ECMO and continuous renal replacement therapy were removed with full recovery of cardiac function. DISCUSSION: Our experience suggests that circulatory assistance by VA ECMO and continuous renal replacement therapy seem to be effective safe second-line therapeutic options in critically ill cases of severe yew intoxication with refractory cardiogenic shock due to arrhythmia.