98%
921
2 minutes
20
Left ventricular assist device (LVAD) is an important treatment for patients with end-stage heart failure, which essentially replaces the left ventricle's pumping action to improve peripheral circulation. Its hemodynamic pattern (pulsatile vs. continuous flow) has been a popular research topic in the field. Because of its dependability and endurance, the continuous flow LVAD (CFVAD), as opposed to the first generation of pulsatile flow LVAD (PFVAD), has gained popularity as a mechanical support device in clinical practice in recent years. Many of the complications that arise with CFVAD application are thought to be related to reduced pulsatility. This article provides a review of the physiologic effects of different hemodynamic patterns on the circulatory system and the difference in outcomes of PFVAD vs. CFVAD.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12358478 | PMC |
http://dx.doi.org/10.3389/fcvm.2025.1645705 | DOI Listing |
Crit Care Explor
September 2025
Division of Pulmonary, Allergy, Critical Care, and Sleep, University of Minnesota, Minneapolis, MN.
Mean airway pressure, a monitored variable continuously available on the modern ventilator, is the pressure measured at the airway opening averaged over the time needed to complete the entire respiratory cycle. Mean airway pressure is well recognized to connect three key physiologic processes in mechanical ventilation: physical stretch, cardiovascular dynamics, and pulmonary gas exchange. Although other parameters currently employed in adults to determine "safe" ventilation are undoubtedly valuable for daily practice, all have limitations for continuous monitoring of ventilation hazard.
View Article and Find Full Text PDFComput Struct Biotechnol J
August 2025
Institut de Recherche en Cancérologie de Montpellier (IRCM), Équipe Labellisée Ligue Contre le Cancer, INSERM U1194, Université de Montpellier, Institut régional du Cancer de Montpellier (ICM), Montpellier, France.
Digital twins (DTs) are emerging tools for simulating and optimizing therapeutic protocols in personalized nuclear medicine. In this paper, we present a modular pipeline for constructing patient-specific DTs aimed at assessing and improving dosimetry protocols in PRRT such as therapy. The pipeline integrates three components: (i) an anatomical DT, generated by registering patient CT scans with an anthropomorphic model; (ii) a functional DT, based on a physiologically-based pharmacokinetic (PBPK) model created in SimBiology; and (iii) a virtual clinical trial module using GATE to simulate particle transport, image simulation, and absorbed dose distribution.
View Article and Find Full Text PDFBiomater Biosyst
September 2025
ENT and Head and Neck Research Center and Department, The Five Senses Health Institute, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Introduction: The airway mucosa plays a crucial role in protection and various physiological functions. Current methods for restoring airway mucosa, such as myocutaneous flaps or split skin grafts, create a stratified squamous layer that lacks the cilia and mucus-secreting glands of the native columnar-lined airway. This study examines the application of various injectable biopolymers as active molecules for a potential approach to regenerating laryngeal epithelial tissue.
View Article and Find Full Text PDFFront Neurosci
August 2025
Beijing Life Science Academy, Beijing, China.
Hypocretin, also known as orexin, is a hypothalamic neuropeptide that regulates essential physiological processes including arousal, energy metabolism, feeding behavior, and emotional states. Through widespread projections and two G-protein-coupled receptors-HCRT-1R and HCRT-2R-the hypocretin system exerts diverse modulatory effects across the central nervous system. The role of hypocretin in maintaining wakefulness is well established, particularly in narcolepsy type 1 (NT1), where loss of hypocretin neurons leads to excessive daytime sleepiness and cataplexy.
View Article and Find Full Text PDFCureus
August 2025
Midwifery Department, University of West Attica, Athens, GRC.
Cardiopulmonary resuscitation (CPR) is a critical, life-saving intervention. In pregnant women, unique anatomical and physiological changes require adaptations to standard CPR protocols to ensure optimal outcomes for both mother and fetus, emphasizing the need for universal awareness and standardized training across diverse healthcare systems globally. Despite the high-risk nature of maternal cardiac arrest, evidence suggests that many healthcare professionals may not be adequately prepared to respond effectively.
View Article and Find Full Text PDF