Results 71 to 80 of about 9,874 (223)

Head-Up Tilt Testing with Different Nitroglycerin Dosages: Experience in Elderly Patients with Unexplained Syncope [PDF]

, 2008
AIMS: Protocols using sublingual nitrates have been increasingly used to improve diagnostic accuracy of head-up tilt testing (HUT). Nevertheless, exaggerated responses to nitrates have been frequently described, particularly in elderly patients.
Antunes, E, Cruz Ferreira, R, Feliciano, J, Nogueira da Silva, M, Oliveira, MM, Santos, S, Silva, S, Timóteo, AT   +7 more
core   +1 more source

Determinants of maximal oxygen uptake in highly trained females and males: a mechanistic study of sex differences using advanced invasive methods

The Journal of Physiology, EarlyView.
Abstract figure legend The results from this study show that maximal cardiac output, stroke volume and leg blood flow are similar between highly trained females and males after normalisation to lean body mass (LBM). However, the 10% higher haemoglobin concentration ([Hb]) and arterial O2 content in males result in higher systemic and leg O2 delivery ...
Øyvind Skattebo, Marcos Martin‐Rincon, Bjarne Rud, Joachim Nielsen, Lars Henrik N. Hegg, Andreas V. Kleive, Niels Ørtenblad, Øyvind Sandbakk, Robert Boushel, Hans‐Christer Holmberg, Jose A.L. Calbet, Jostein Hallén   +11 more
wiley   +1 more source

The human fear-circuitry and fear-induced fainting in healthy individuals The paleolithic-threat hypothesis [PDF]

, 2005
The Paleolithic-Threat hypothesis reviewed here posits that habitual efferent fainting can be traced back to fear-induced allelic polymorphisms that were selected into some genomes of anatomically, mitochondrially, and neurally modern humans (Homo
Bracha, Adam S., Bracha, Dr. Stefan, Matsukawa, Jennifer M., Ralston, Tyler C., Williams, Dr. Andrew E.   +4 more
core  

Brugada Syndrome: New Implications for Heterozygous Carriers of the Pathogenic SCN5A c.689T>C(p.Ile230Thr) Variant

American Journal of Medical Genetics Part A, Volume 200, Issue 5, Page 1083-1086, May 2026.
ABSTRACT Pathogenic variants in the SCN5A gene and its subunits have been identified in individuals with Brugada Syndrome. One such SCN5A variant, c.689T>C(p.Ile230Thr), was previously reported as disease‐causing only in homozygous individuals, with heterozygous carriers being unaffected.
Shayla Shojaat, Benjamin Hale, Taylor Warner   +2 more
wiley   +1 more source

Video education to improve clinical skills in the prevention of and response to vasovagal syncopal episodes

International Journal of Women's Dermatology, 2020
Background: Vasovagal syncope is a common clinical occurrence during routine outpatient dermatology procedures, such as injections and biopsies. Despite its prevalence, many medical students and health care professionals do not know how to respond ...
Anne Coakley, BS, Alison Bailey, MD, Joy Tao, MD, Yujie L. Liou, DO, Amanda Champlain, MD, Michael Ander, MD, Eden Lake, MD   +6 more
doaj   +1 more source

Safety and efficacy of a suction cervical stabilizer for IUD insertion: Results from a multicenter post‐marketing study

International Journal of Gynecology &Obstetrics, Volume 173, Issue 2, Page 1067-1074, May 2026.
Abstract Objective To evaluate the experiences with an atraumatic device (Carevix®) for intrauterine device (IUD) placement in routine clinical practice. Methods Our prospective, post‐marketing study was conducted in 19 centers in Europe, Brazil and the USA. IUD insertions using Carevix device were documented for completion rates, patient‐reported pain
Michal Yaron, Victoria Crofts, Ana C. Marcelino, Ximena Espejo‐Arce, Elaine Garcia, Julia Barbe, Elisabeth Garcia Vilaplana, Micol Murtas, Cassia T. Juliato, Dehlia Moussaoui, Alissa Conklin, Luis Bahamondes   +11 more
wiley   +1 more source

Tilt Test as a Primary Non-Invasive Method for Testing Cardiac Autonomic Nervous System Function in Patients with Vasovagal Syncope

Український журнал серцево-судинної хірургії
Introduction Syncope is a sudden, brief loss of consciousness with rapid spontaneous recovery, caused by transient global cerebral hypoperfusion. Among various causes of syncope, the most common are reflex mechanisms, particularly vasovagal syncope ...
Dmytro A. Tymoshenko, Mykola V. Derkach, Alina V. Topchii   +2 more
doaj   +1 more source

Spectral analysis of heart rate variability for assessment of autonomic nervous system activity during head-up tilt table testing [PDF]

, 2014
Spectral analysis of heart rate variability was used to assess changes in activity of autonomic nervous system (ANS) in 84 patients with history of recurrent syncope and 21 normal controls.
et al., Likar, Polona
core   +1 more source

Meniere’s, Migraine & Motion Sickness [PDF]

, 2016
CONCLUSION Elevated MSS in MD is likely to be a consequence of the onset of MD and not migraine per se. OBJECTIVES Pathologies of the vestibular system influence motion sickness susceptibility (MSS).
Golding, J.F., Golding, J.F., Patel, M., Patel, M.   +3 more
core   +1 more source

Correlation Analysis of 24‐h Minimum Heart Rate Levels and Deceleration Capacity of Heart Rate in Patients With Type 2 Diabetes Mellitus Complicated With Essential Hypertension

Annals of Noninvasive Electrocardiology, Volume 31, Issue 3, May 2026.
Sex‐specific 24‐hour minimum heart rate (MHR) stratification in patients with type 2 diabetes mellitus and essential hypertension (T2DM‐EH). Three key findings are shown from subgroup analysis: (1) In the normal MHR group (Group B), advancing age independently predicts reduced deceleration capacity (DC) in both sexes.
Pingping Wu, Zhengrong Xu, Xiuyu Zheng, Linying Gong, Hongkun Qiao, Guoyan Xu, Qunfang Xie   +6 more
wiley   +1 more source