Francesca Motta, Marianna Cerrato, Daria De Giorgio, Alice Salimbeni, Giulia Merigo, Aurora Magliocca, Carlo Perego, Elisa R Zanier, Giuseppe Ristagno, Francesca Fumagalli
{"title":"Translational approach to assess brain injury after cardiac arrest in preclinical models: a narrative review.","authors":"Francesca Motta, Marianna Cerrato, Daria De Giorgio, Alice Salimbeni, Giulia Merigo, Aurora Magliocca, Carlo Perego, Elisa R Zanier, Giuseppe Ristagno, Francesca Fumagalli","doi":"10.1186/s40635-024-00710-y","DOIUrl":"10.1186/s40635-024-00710-y","url":null,"abstract":"","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"13 1","pages":"3"},"PeriodicalIF":2.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732829/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142978392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elie Azoulay, Nancy Kentish Barnes, Sheila Nainan Myatra, Maria-Cruz Martin Delgado, Yaseen Arabi, Carole Boulanger, Giovanni Mistraletti, Maria Theodorakopoulou, Vernon Van Heerden, José-Artur Paiva, Oktay Demirkýran, Gabriel Heras La Calle, Abdulrahman Al Fares, Gaston Burghi, Guy Francois, Anita Barth, Jan De Waele, Samir Jaber, Michael Darmon, Maurizio Cecconi
{"title":"Correction: HELLO: a protocol for a cluster randomized controlled trial to enhance interpersonal relationships and team cohesion among ICU healthcare professionals.","authors":"Elie Azoulay, Nancy Kentish Barnes, Sheila Nainan Myatra, Maria-Cruz Martin Delgado, Yaseen Arabi, Carole Boulanger, Giovanni Mistraletti, Maria Theodorakopoulou, Vernon Van Heerden, José-Artur Paiva, Oktay Demirkýran, Gabriel Heras La Calle, Abdulrahman Al Fares, Gaston Burghi, Guy Francois, Anita Barth, Jan De Waele, Samir Jaber, Michael Darmon, Maurizio Cecconi","doi":"10.1186/s40635-024-00702-y","DOIUrl":"10.1186/s40635-024-00702-y","url":null,"abstract":"","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"13 1","pages":"2"},"PeriodicalIF":2.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706804/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142948451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanical power and VILI: modeling limits and unknowns.","authors":"Tommaso Tonetti, John J Marini","doi":"10.1186/s40635-024-00712-w","DOIUrl":"10.1186/s40635-024-00712-w","url":null,"abstract":"","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"13 1","pages":"1"},"PeriodicalIF":2.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11704099/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142931354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bjørn Ove Faldaas, Benjamin Stage Storm, Knut Tore Lappegård, Ole-Jakob How, Bent Aksel Nilsen, Gabriel Kiss, Eirik Skogvoll, Erik Waage Nielsen, Hans Torp, Charlotte Björk Ingul
{"title":"A hands-free carotid Doppler can identify spontaneous circulation without interrupting cardiopulmonary resuscitation: an animal study.","authors":"Bjørn Ove Faldaas, Benjamin Stage Storm, Knut Tore Lappegård, Ole-Jakob How, Bent Aksel Nilsen, Gabriel Kiss, Eirik Skogvoll, Erik Waage Nielsen, Hans Torp, Charlotte Björk Ingul","doi":"10.1186/s40635-024-00704-w","DOIUrl":"10.1186/s40635-024-00704-w","url":null,"abstract":"<p><strong>Background: </strong>Identifying spontaneous circulation during cardiopulmonary resuscitation (CPR) is challenging. Current methods, which involve intermittent and time-consuming pulse checks, necessitate pauses in chest compressions. This issue is problematic in both in-hospital cardiac arrest and out-of-hospital cardiac arrest situations, where resources for identifying circulation during CPR may be limited. The fraction of chest compression plays a pivotal role in improving survival rates. To address this challenge, we evaluated a newly developed hands-free, continuous carotid Doppler system (RescueDoppler), designed to identify spontaneous circulation during chest compressions. In our study, we utilized a porcine model of cardiac arrest to investigate sequences of ventricular fibrillation, followed by defibrillation, and monitoring for the return of spontaneous circulation during chest compressions with the carotid Doppler system. We explored both manual compressions at 100 and 50 compressions per minute and mechanical compressions. To estimate the detection rate (i.e., sensitivity), we employed a logistic mixed model with animal identity as random effect.</p><p><strong>Results: </strong>Offline analysis of Doppler color M-mode and spectral display successfully identified spontaneous circulation during chest compressions in all compression models. Spontaneous circulation was detected in 51 of 59 sequences, yielding an expected sensitivity of 98% with a 95% confidence interval of 59% to 99%.</p><p><strong>Conclusion: </strong>The RescueDoppler, a continuous hands-free carotid Doppler system, demonstrates an expected sensitivity of 98% for identifying spontaneous circulation during both manual and mechanical chest compressions. Clinical studies are needed to further validate these findings.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"121"},"PeriodicalIF":2.8,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11680543/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebastian Schmidt, Maria Heinrich, Klaus-Dieter Wernecke, Claudia Spies, Laura Hancke, Anika Mueller, Alawi Luetz
{"title":"Modification in ICU design may influence circadian serum cholinesterase activities: a proof-of-concept pilot study.","authors":"Sebastian Schmidt, Maria Heinrich, Klaus-Dieter Wernecke, Claudia Spies, Laura Hancke, Anika Mueller, Alawi Luetz","doi":"10.1186/s40635-024-00709-5","DOIUrl":"10.1186/s40635-024-00709-5","url":null,"abstract":"<p><strong>Background: </strong>Deficits in cholinergic function are assumed to cause cognitive decline. Studies have demonstrated that changes in serum cholinesterase activities are associated with a higher incidence of delirium in critically ill patients. Additionally, basic research indicates that the cholinergic and circadian systems are interconnected, with each system influencing the functionality of the other. This data analysis of a proof-of-concept pilot study investigates whether modification in ICU design, including dynamic light therapy, may influence the circadian oscillation of serum cholinesterase activities.</p><p><strong>Methods: </strong>We enrolled adult critically ill patients who were on mechanical ventilation and had an anticipated ICU stay of at least 48 h. The patients were treated in either modified or standard ICU rooms. The modified rooms received extensive architectural modifications, including a new dynamic lighting system. Serum acetylcholinesterase and butyrylcholinesterase activities were measured every four hours for up to three 24-h assessment periods.</p><p><strong>Results: </strong>We included 64 patients in the data analysis (n = 34 patients in modified rooms, n = 30 in standard rooms). The median values of serum acetylcholinesterase and butyrylcholinesterase activities showed different patterns. Acetylcholinesterase activities differed significantly between the groups during the first assessment period (p = 0.04) and the second assessment period (p = 0.045). The intensity of light, as quantified by the effective circadian irradiance, significantly influenced the activities of acetylcholinesterase and butyrylcholinesterase throughout all assessment periods for patients in both groups (p < 0.001). The analysis showed significant interaction (p < 0.001), indicating that the differences in acetylcholinesterase and butyrylcholinesterase activities between the groups were inconsistent over time but apparent during specific periods of the day.</p><p><strong>Conclusion: </strong>Implementing a comprehensive set of changes to the design of ICU rooms, including a dynamic lighting system, may influence the course of the activity patterns of acetylcholinesterase and butyrylcholinesterase in critically ill patients. Modifications to environmental factors could potentially offer neuroprotective benefits and facilitate the realignment of circadian rhythms within the cholinergic system. Clinical trial registration ClinicalTrials.gov: NCT02143661. Registered May 21, 2014.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"120"},"PeriodicalIF":2.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11666856/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142882003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qiuming Meng, Fumiko Seto, Tokie Totsu, Tomoyuki Miyashita, Songfei Wu, Masahiko Bougaki, Michiko Ushio, Takahiro Hiruma, Bruce C Trapnell, Kanji Uchida
{"title":"Lung immune incompetency after mild peritoneal sepsis and its partial restoration by type 1 interferon: a mouse model study.","authors":"Qiuming Meng, Fumiko Seto, Tokie Totsu, Tomoyuki Miyashita, Songfei Wu, Masahiko Bougaki, Michiko Ushio, Takahiro Hiruma, Bruce C Trapnell, Kanji Uchida","doi":"10.1186/s40635-024-00707-7","DOIUrl":"10.1186/s40635-024-00707-7","url":null,"abstract":"<p><strong>Background: </strong>Sepsis is commonly associated with acute respiratory distress syndrome (ARDS). Although the exaggerated inflammation may damage intact lung tissues, a percentage of patients with ARDS are reportedly immunocompromised, with worse outcomes. Herein, using a murine sepsis model, time-course immune reprogramming after sepsis was evaluated to explore whether the host is immunocompromised. Leukocyte kinetics in the lung tissue were evaluated in a male C57/BL6 mouse model of mild peritoneal sepsis induced by cecal ligation and puncture, with the survival rate exceeds 90%. Lung immune reactivity was evaluated by intratracheal instillation of lipopolysaccharide (LPS; 30 µg). Furthermore, the effect of interferon (IFN)-β in vivo and ex vivo was evaluated.</p><p><strong>Results: </strong>Four days after sepsis, the lung water content remained high, even among mice in clinical recovery. While monocytes and neutrophils gradually accumulated in the lung interstitium, the inflammatory cytokine/chemokine expression levels in the lungs continued to decline. Intratracheal LPS instillation induced more leukocyte trafficking and protein leakage into the alveoli in the septic lung, indicating more severe lung injury. However, LPS stimulation-associated mRNA expression of tnf, il6, ccl2, and cxcl1 was suppressed. Intra-alveolar expression of tumor necrosis factor (TNF)-α, interleukin (IL)-6, monocyte chemoattractant protein (MCP)-1, and keratinocyte-derived cytokine (KC) was also suppressed. Monocytes isolated from the lung tissue showed an impaired response in il6, ccl2, and cxcl1 to LPS. Systemic IFN-β restored the above impaired regulator function of monocytes, as did coculturing these cells from lung tissue with IFN-β.</p><p><strong>Conclusions: </strong>Histologically accelerated inflammation and paradoxically suppressed immunological regulator signaling were observed in the early recovery phase of sepsis. This observation may provide a model for the immunologically irresponsive state that occurs in some patients with sepsis. Systemic IFN-β partly restored the post-septic immunocompromised state, indicating its therapeutic potential for the immunosuppressive state seen in some patients with sepsis/ARDS.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"119"},"PeriodicalIF":2.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11662124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142871982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"β3-Adrenergic receptor antagonism improves cardiac and vascular functions but did not modulate survival in a murine resuscitated septic shock model.","authors":"Eugénie Hagimont, Marc-Damien Lourenco-Rodrigues, Benjamin-Glenn Chousterman, Frances Yen-Potin, Manon Durand, Antoine Kimmoun","doi":"10.1186/s40635-024-00705-9","DOIUrl":"10.1186/s40635-024-00705-9","url":null,"abstract":"<p><strong>Background: </strong>Recent findings suggest that β3-adrenergic receptors (β3-AR) could play a role in the hemodynamic regulation, but their function in septic shock remains unclear. This study investigates the modulation of β3-AR in an experimental murine model of resuscitated septic shock on in vivo hemodynamic, ex vivo vasoreactivity, inflammation and survival.</p><p><strong>Method: </strong>Wild-type mice were used, undergoing cecal ligation and puncture (CLP) to induce septic shock, with SHAM as controls. Mice were treated with β3-AR agonist or antagonist three hours post-CLP, followed by resuscitation with fluids and antibiotics. Hemodynamic parameters were measured at 18 h following the surgery, and the expression of β-ARs in heart and aorta was assessed via immunostaining and western blot. Vascular reactivity was studied using myography, and inflammatory markers were analyzed through PCR and western blots. A 5-day survival study was conducted, documenting clinical severity scores and survival rates.</p><p><strong>Results: </strong>β3-AR was expressed in both endothelial and myocardial cells in healthy and septic mice. During septic shock model, β3-AR density on endothelial cells increased post-CLP, while β1- and β2-AR decreased or remained constant. β3-AR antagonist treatment improved hemodynamic parameters, increasing mean arterial pressure and cardiac index, unlike the agonist. Vascular reactivity to phenylephrine was enhanced in aortic rings from both β3-AR agonist and antagonist-treated mice. However, no significant differences in inducible NO synthase expression were observed among treated groups. Despite improved hemodynamic parameters with β3-AR antagonist treatment, survival rates in treated groups remained similar to CLP group.</p><p><strong>Conclusions: </strong>In an experimental murine model of resuscitated septic shock, β3-AR is resistant to desensitization and its inhibition improves cardiac and vascular function without affecting the short-term survival.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"118"},"PeriodicalIF":2.8,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11655894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142846513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Álmos Schranc, John Daniels, Roberta Südy, Fabienne Fontao, Philippe Bijlenga, Guillaume Plourde, Hervé Quintard
{"title":"Safety of flow-controlled ventilation with positive and negative end-expiratory pressure in a swine model of intracranial hypertension.","authors":"Álmos Schranc, John Daniels, Roberta Südy, Fabienne Fontao, Philippe Bijlenga, Guillaume Plourde, Hervé Quintard","doi":"10.1186/s40635-024-00703-x","DOIUrl":"10.1186/s40635-024-00703-x","url":null,"abstract":"<p><strong>Background: </strong>Patients with brain damage often require mechanical ventilation. Although lung-protective ventilation is recommended, the application of increased positive end-expiratory pressure (PEEP) has been associated with elevated intracranial pressure (ICP) due to altered cerebral venous return. This study investigates the effects of flow-controlled ventilation (FCV) using negative end-expiratory pressures (NEEP), on cerebral hemodynamics in a swine model of intracranial hypertension.</p><p><strong>Methods: </strong>A model of intracranial hypertension involving bilateral trepan bolt holes was performed in 14 pigs. Pressure-controlled volume-guaranteed ventilation (PCV-VG) with PEEP and FCV using PEEP and then NEEP were applied. Intracranial pressure and oxygenation, as well as systemic hemodynamics and gas exchange parameters, were continuously monitored. Data were collected at baseline and at varying PEEP levels for both PCV-VG and FCV ventilation modalities. Following this, FCV ventilation and NEEP levels of -3, -6 and -9 cmH<sub>2</sub>O were applied.</p><p><strong>Results: </strong>ICP remained stable with low PEEP levels, but significantly decreased with NEEP. Lower ICP following NEEP improved cerebral perfusion pressure and cerebral tissue oxygenation (p < 0.05 for all). FCV with NEEP at EEP-6 and EEP-9 significantly improved cardiac output and mean arterial pressure (MAP), compared to PCV-VG and FCV using PEEP (p < 0.05, respectively). There were no significant differences in gas exchange parameters between modalities (PCV-VG vs FCV), and between the application of PEEP or NEEP. No significant correlations were observed between ΔICP and ΔMAP.</p><p><strong>Conclusion: </strong>The application of FCV with NEEP appears to be a safe ventilation mode and offers an additional tool for controlling severe intracranial pressure episodes. These findings warrant validation in future studies and may lead to important potential applications in clinical practice.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"117"},"PeriodicalIF":2.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11645394/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mauro Galizia, Valentina Ghidoni, Giulia Catozzi, Stefano Giovanazzi, Domenico Nocera, Beatrice Donati, Tommaso Pozzi, Rosanna D'Albo, Mattia Busana, Federica Romitti, Peter Herrmann, Onnen Moerer, Konrad Meissner, Michael Quintel, Luigi Camporota, Luciano Gattinoni
{"title":"Predictors of VILI risk: driving pressure, 4DPRR and mechanical power ratio-an experimental study.","authors":"Mauro Galizia, Valentina Ghidoni, Giulia Catozzi, Stefano Giovanazzi, Domenico Nocera, Beatrice Donati, Tommaso Pozzi, Rosanna D'Albo, Mattia Busana, Federica Romitti, Peter Herrmann, Onnen Moerer, Konrad Meissner, Michael Quintel, Luigi Camporota, Luciano Gattinoni","doi":"10.1186/s40635-024-00697-6","DOIUrl":"10.1186/s40635-024-00697-6","url":null,"abstract":"<p><strong>Background: </strong>Ventilator-induced lung injury (VILI) is one of the side effects of mechanical ventilation during ARDS; a prerequisite for averting it is the quantification of its risk factors associated with a given ventilatory setting. Many clinical variables have been proposed as predictors of VILI, of which driving pressure is the most widely used. In this study, we compared the performance of driving pressure, four times the driving pressure added to respiratory rate (4DPRR) and mechanical power ratio.</p><p><strong>Results: </strong>In a study population of 121 previously healthy pigs exposed to harmful ventilation, we compared the association of driving pressure, 4DPRR and mechanical power ratio to lung weight, lung wet-to-dry and total histological score. All the three variables were associated with these outcomes. Driving pressure, 4DPRR and mechanical power ratio increase linearly with the lung weight (adjusted R<sup>2</sup> of 0.27, 0.36 and 0.40, respectively), the lung wet-to-dry ratio (adjusted R<sup>2</sup> of 0.19, 0.25 and 0.37) and the total histological score (adjusted R<sup>2</sup> of 0.26, 0.38 and 0.26). Using a multiple linear regression model with forward analysis, starting with tidal volume and progressively adding respiratory rate and positive end-expiratory pressure, and comparing the topic with the outcome variables, we obtained R<sup>2</sup> values, respectively, of 0.07, 0.20, 0.42 for lung weight, 0.09, 0.19, 0.26 for lung wet-to-dry ratio and 0.07, 0.27, 0.43 for total histological score.</p><p><strong>Conclusions: </strong>Driving pressure, 4DPRR and mechanical power ratio, were all associated with lung injury in healthy animals undergoing mechanical ventilation.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"116"},"PeriodicalIF":2.8,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11635077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Renal venous flow in different regions of the kidney are different and reflecting different etiologies of venous reflux disorders in septic acute kidney injury: a prospective cohort study.","authors":"Rongping Chen, Hui Lian, Hua Zhao, Xiaoting Wang","doi":"10.1186/s40635-024-00700-0","DOIUrl":"10.1186/s40635-024-00700-0","url":null,"abstract":"<p><strong>Background: </strong>Acute kidney injury (AKI) is a frequent complication of sepsis. While impaired renal venous reflux indicates renal congestion, the relationship between AKI outcomes and hemodynamic parameters remains debated. This study aimed to investigate the utility of renal venous flow patterns in various regions of septic patients and to explore the association between hemodynamic parameters and renal function prognosis.</p><p><strong>Methods: </strong>In this single-center, prospective longitudinal study, adult sepsis patients diagnosed with AKI were enrolled. Renal ultrasonography was performed within 24 h of ICU admission (D1), then repeated at D3 and D5. Patterns of proximal renal venous flow (PRVF) and intrarenal venous flow (IRVF) patterns were confirmed by two blinded sonographers. Kaplan-Meier survival analysis was used to evaluate renal prognosis, and cumulative incidence curves were generated for renal function recovery time.</p><p><strong>Results: </strong>The study included 96 septic patients. Inconsistencies between PRVF and IRVF patterns occurred in 31.9%, with PRVF patterns being more severe in 88% of these. A relatively strong correlation was observed between PRVF and CVP, but this trend was less evident in IRVF. For RVSI of PRVF at ICU admission, the AUC to predict 28-day renal function prognosis was 0.626 (95% CI 0.502-0.750, P = 0.044), while combined PRVF and IRVF had a higher predictive ability (AUC 0.687, 95% CI 0.574-0.801, P = 0.003). The 28-day renal prognosis was poorer in the PRVF 5-day non-improvement group compared to the 3-day improvement group (P = 0.001) and 5-day improvement group (P = 0.012). Patients with a persistent monophasic PRVF pattern within 5 days had a worse prognosis than the non-monophasic group (P = 0.005).</p><p><strong>Conclusions: </strong>Our study reveals that patterns of PRVF and IRVF are not entirely congruent, stepwise evaluation is useful in determining the intervention site for renal vein reflux disorders. Combined PRVF and IRVF had a higher predictive ability for 28-day renal function prognosis. Early improvement in renal venous congestion is crucial for better renal function prognosis. This study is registered with ClinicalTrials.gov, number NTC06159010. Retrospectively registered 28 November 2023.</p>","PeriodicalId":13750,"journal":{"name":"Intensive Care Medicine Experimental","volume":"12 1","pages":"115"},"PeriodicalIF":2.8,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11631833/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142799883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}