Preclinical evaluation of a low-cost mechanical ventilato by Randall Chacón-Cerdas, Adrián Quesada-Martínez, Aníbal Ruíz-Barquero, Roberto Estrada-McDermott

“…At the Costa Rica Institute of Technology (ITCR), a prototype mechanical ventilator (TEC-Ventilator) was developed with the following features: the capability to achieve a tidal volume of 250 to 800 mL with controlled increments of 50 mL, a respiratory rate of 10 to 30 breaths/min, a variable Inspiration:Expiration ratio from 1:1 to 1:5, and a fraction of inspired oxygen (FiO2 ) of 21-70%. …”
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The initial level of heart rate variability determines the dynamics of the neuropathy of the autonomic nervous system and temperature sensitivity in rats with streptozotocin diabet... by Maria P. Morozova, Svetlana A. Gavrilova, Evgeniy V. Ivanov, Aleksei K. Erdiakov, Ekaterina M. Rzhavina, Vladimir B. Koshelev, Gagik R. Galstyan

“…MATERIALS AND METHODS: 70 male rats were randomized by weight and level of total heart rate variability (HRV) on animals with initially low and high levels of total HRV. …”
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Heart rate variability adaptation due to head-down tilt bed rest: insights from pooled data of six campaigns by Sarah Solbiati, Enrico Gianluca Caiani

“…This retrospective study examines the changes in heart rate variability (HRV) induced by head-down tilt (HDT) bed rest, a ground-based analog for microgravity. …”
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Effects of poststroke heart rate variability on the neurological impairment severity and the prognosis among patients with ischaemic stroke: a scoping review by Xiaoting Zheng, Ruiying Zhang, Jianan Hong, Shuying Chen, Liling Lin, Yingxiu Xiao

“…Objectives Changes in poststroke heart rate variability (HRV) might be helpful for early identification of patients with neurological impairment and poor prognosis, which could allow for early intervention to reduce adverse outcomes. …”
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Association between visceral fat area and heart rate variability in high altitude migrants with OSA: the mediating effect of insulin resistance by Shanshan Jia, Yongxing Fu, Yong Wu, Hongwei Li, Doudou Hao, Yunhong Wu, Xiaoping Chen, Liming Zhao

“…Abstract Objective This study was conducted to investigate the association between visceral fat area (VFA) and heart rate variability (HRV) in high-altitude migrants with obstructive sleep apnea (OSA). …”
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Heart Rate Variability in Young Adults with Bronchial Asthma with and without Previous COVID-19 Infection: A Cross-sectional Study by Gunaseelan Deivendran, Thamarai Selvi Kanagaraj, Bhavisha Sreenivasan Leelabai, Nalini Jayanthi, Saravanan Ayyavoo

“…Introduction: Heart Rate Variability (HRV) is a validated, non invasive measure of Autonomic Nervous System (ANS) function. …”
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Analysis of heart rhythm variability by linear and non-linear dynamics methods by Vuksanović Vesna, Gal Vera

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Heart rate characteristics predict risk of mortality in preterm infants in low and high target oxygen saturation ranges by William E. King, Urvi Jhaveri Sanghvi, Namasivayam Ambalavanan, Vivek V. Shukla, Colm P. Travers, Robert L. Schelonka, Clyde Wright, Waldemar A. Carlo

“…We aimed to evaluate the accuracy of the heart rate characteristics index (HRCi) in assessing the dynamic risk of mortality among infants managed with low and high target SpO2 ranges. …”
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Uncertainties of Annual Suspended Sediment Transport Estimates Driven by Temporal Variability by Aron Slabon, Thomas Hoffmann

“…Additionally, Ts80% is linked to rating exponent b, with low b‐values indicating high Ts80%‐values and lower variability, and high b‐values indicating higher variability.…”
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Study of heart rate variability in healthy humans as a function of age: considerations on the contribution of the autonomic nervous system and the role of the sinoatrial node by David A. Jorge Tasé, David A. Jorge Tasé, Leopoldo Garavaglia, Magdalena M. Defeo, Isabel M. Irurzun

“…IntroductionThis study focused on the complex structure of heart rate variability (HRV) in the healthy heart. We studied the behavior of the heart rate variability (HRV) in healthy humans as a function of age from conception, including fetal data. …”
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Diabetic distress, low-grade chronic inflammation, and cardiac autonomic neuropathy in internally displaced people (literature review and own observations) by V.A. Serhiyenkо

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Heart Rate Variability, Microvascular Dysfunction, and Inflammation: Exploring the Potential of taVNS in Managing Heart Failure in Type 2 Diabetes Mellitus by Serge C. Thal, Sergey Shityakov, Ellaine Salvador, Carola Y. Förster

“…This review examines critical factors influencing CVD risk in T2DM, particularly the roles of reduced heart rate variability (HRV), a marker of autonomic dysfunction, and chronic inflammation, both of which play pivotal roles in HF pathogenesis. …”
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CLINICAL SIGNIFICANCE OF HEART RATE VARIABILITY INDEXES DERIVED FROM 5-MINUTE AND 24-HOUR ECG RECORDINGS IN PATIENTS WITH RHEUMATOID ARTHRITIS by D. A. Anichkov, A. A. Platonova

“…Aim. To estimate heart rate variability (HRV) from 5-min and 24-h electrocardiogram (ECG) recordings in female patients with rheumatoid arthritis (RA) and patients of control group, to analyze association between HRV indexes and cardiovascular risk factors and RA-related clinical characteristics.Material and Methods. 90 female patients with RA and 30 healthy subjects matching for age were included in the study. …”
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Heart Rate Variability Modulates the Relationship between Anxiety Symptoms and Emotional Responses to Anxiety-Provoking Imagery: A Cross-Sectional Study by Andronikos Strouthos, Elena Constantinou, Chrysanthi Leonidou, Maria Karekla, Georgia Panayiotou

“…Background: Anxiety disorders have traditionally been related to low heart rate variability (HRV), whereas high HRV has been related to mental health and effective emotion regulation. …”
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Values of heart rate variability indices recorded under conditions of active orthostasis for elite ski racers, as a reflection of sports vagotonia by D. A. Kataev, V. I. Tsirkin, A. N. Trukhin, S. I. Trukhina

“…In order to indirectly prove the nature of sports vagotonia, an analysis of 15 indicators of heart rate variability (HRV) was performed, recorded using the VNS-Micro system (Neurosoft, Ivanovo) by 5-minute cardiointervalography (CIG) under conditions of active orthostasis (ortho-CIG, ortho-HRV) at the 8 elite cross-country skiers (MS, MSMC) of the team of the Republic of Tatarstan during the preparatory and competitive periods, as well as a member of this team, athlete K.D. …”
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Low Hepatitis B vaccination rates among medical students in South Asia: A systematic review and meta-analysis. by Ramesh Lamichhane, Indra Dev Pathak, Bishnu Deep Pathak, Pritha Adhikari, Sagun Dawadi, Aashika Rai, Pratikshya Ojha, Kripa Maharjan, Kirtan Gautam, Nishan Dhakal, Madhusudan Saha

“…However, studies have reported variable vaccination rates among medical students from different regions of South Asia. …”
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Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER by Zuobin Zhang, Cosimo Bambi, Honghui Liu, Jiachen Jiang, Fangzheng Shi, Yuexin Zhang, Andrew J. Young, John A. Tomsick, Benjamin M. Coughenour, Menglei Zhou

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Effect of very low nicotine content cigarettes on smoking behavior in Chinese smokers with genotype-stratified nicotine metabolism rates by Wanwan Ma, Wanwan Ma, Yaning Fu, Yaning Fu, Huan Chen, Huan Chen, Hongjuan Wang, Hongjuan Wang, Shulei Han, Shulei Han, Yushan Tian, Yushan Tian, Hongwei Hou, Hongwei Hou, Qingyuan Hu, Qingyuan Hu

“…The genetic basis of nicotine metabolism, which varies significantly between Chinese and Western populations, impacts the effectiveness of interventions aimed at reducing nicotine dependence. Very Low Nicotine Content (VLNC) cigarettes are considered a promising strategy for smoking cessation. …”
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Enhancing sleep stage classification with ballistocardiogram signals: feature selection using attention mechanism and XGBoost by Chao Luo, Banteng Liu, Jiayu Chai, Zhijian Teng

“…BCG signals were processed using continuous wavelet transform and low-pass filtering to extract heart rate variability (HRV) and respiratory rate variability (RRV). …”
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The Effect of Heart Rate Variability Biofeedback Training on Optimizing Blood Pressure after Exercising in Cold Environment in 14-15-Year-Old Adolescents by Liliya V. Poskotinova

“…Background: The heart rate variability biofeedback (HRV-BF) method is designed to activate both vagal nerve activity and baroreflex function. …”
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