It has been reported that deep breathing at 6 breaths/min is associated with reduction of premature ventricular complexes. The beneficial effect of deep breathing is supposed to be due to vagal modulation of sinoatrial and atrioventricular node. Beside the modulating effects of deep breathing, we believe that deep breathing, which is also used in yoga training, might have additional effects via decreasing QT dispersion.
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http://dx.doi.org/10.1016/j.ijcard.2005.09.041 | DOI Listing |
Alzheimers Dement
December 2024
Department of Radiology, miami, FL, USA.
Background: Clearance of brain toxins occurs during sleep, although the mechanism remains unknown. Previous studies implied that the intracranial aqueductal cerebrospinal fluid (CSF) oscillations are involved, but no mechanism was suggested. The rationale for focusing on the aqueductal CSF oscillations is unclear.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, No.600 Yishan Road, Xuhui District, Shanghai, 200233, People's Republic of China.
Regional anesthesia is a popular method for surgical anesthesia in clavicular surgery. Selective blocking of the cervical 3, 4, and 5 nerve roots shows promise in clavicle surgery, with its fast onset, good anesthesia and less complications, necessitating evaluation of its impact on diaphragmatic function. The purpose of this study is to examine the safety of C3, 4, and 5 nerve root block for its application in clavicle surgery.
View Article and Find Full Text PDFPhys Med Biol
January 2025
Department of Radiation Oncology, University of Texas Southwestern Medical Center, 2280 Inwood Road, Dallas, 75390, UNITED STATES.
Real-time cone-beam computed tomography (CBCT) provides instantaneous visualization of patient anatomy for image guidance, motion tracking, and online treatment adaptation in radiotherapy. While many real-time imaging and motion tracking methods leveraged patient-specific prior information to alleviate under-sampling challenges and meet the temporal constraint (< 500 ms), the prior information can be outdated and introduce biases, thus compromising the imaging and motion tracking accuracy. To address this challenge, we developed a framework (DREME) for real-time CBCT imaging and motion estimation, without relying on patient-specific prior knowledge.
View Article and Find Full Text PDFCureus
November 2024
Medicine, University of Central Florida College of Medicine, Orlando, USA.
Introduction SARS-CoV-2 infection (COVID-19) and the COVID-19 vaccine have been linked to the development of persistent symptoms, including orthostatic intolerance (OI) and postural orthostatic tachycardia syndrome (POTS), in both children and adults. POTS is characterized by excessive tachycardia and other symptoms upon standing, significantly impacting quality of life. This study aims to evaluate the clinical and laboratory findings in pediatric patients with post-COVID-19 or post-COVID-19 vaccine OI and POTS.
View Article and Find Full Text PDFMymensingh Med J
January 2025
Professor Dr Varun Malhotra, Additional Professor, Department of Physiology, AIIMS Bhopal, India; E-mail:
The autonomic nervous system governs rhythmic fluctuations in blood pressure and heart rate, which are influenced by breathing patterns. This study aims to explore how different breathing techniques, specifically Kapalbhati (fast-paced breathing) and Slow Deep Breathing (SDB), affect heart rate variability (HRV). This study was conducted in the Department of Physiology and AYUSH at AIIMS Bhopal, India and duration was 2 (Two) months from May 2021 to June 2021 This quasi-experimental study involved 60 participants divided into two groups: Kapalbhati and SDB.
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