Filtered By:
Procedure: Electrocardiogram

This page shows you your search results in order of relevance.

Order by Relevance | Date

Total 105 results found since Jan 2013.

Heart Rate Variability During Nocturnal Sleep and Daytime Naps in Patients With Narcolepsy Type 1 and Type 2
Conclusions: Heart rate variability abnormalities during sleep and the role of these changes on the development of cardiovascular diseases must be investigated in prospective follow-up studies of patients with narcolepsy. Heart rate variability changes during night sleep, daytime napping, and presence of sleep-onset REM periods may affect the life-threatening events.
Source: Journal of Clinical Neurophysiology - March 1, 2019 Category: Neurology Tags: Original Research Source Type: research

Cardiovascular Parameters in a Swine Model of Normobaric Hypoxia Treated With 5-Hydroxymethyl-2-Furfural (5-HMF)
Conclusion: 5-HMF treatment decreased P50, improved SaO2, and mitigated increases in PAP in this swine model of NH. Introduction The reduction of barometric pressure at altitude is associated with reduced partial pressure of ambient Oxygen (PO2). With lower ambient PO2, it can be anticipated that alveolar (PAO2), arterial O2 (PaO2) and blood O2 content (CaO2) will decrease accordingly, resulting in a widely recognized decrease in maximal O2 consumption (VO2) (Dill and Adams, 1972; Lucas et al., 2011). In humans, with acute exposure to altitude, maximal VO2 decrements are measurable at elevations even as low as 580 ...
Source: Frontiers in Physiology - April 17, 2019 Category: Physiology Source Type: research

Mazindol in narcolepsy and idiopathic and symptomatic hypersomnia refractory to stimulants: A long-term chart review
This study aimed to evaluate the long-term benefit/risk ratio in drug-resistant hypersomniacs and cataplexy sufferers.Methods: By retrospective analysis of the patients’ files in the hospitals of Paris-Salpêtrière (n=91), Montpellier (n=40) and Lyon (n=8), the benefit (Epworth Sleepiness Score (ESS), cataplexy frequency, authorization renewal) and tolerance (side-effects, vital signs, electrocardiogram and cardiac echography) of mazindol were assessed.Results: The 139 patients (45% men) aged 36±15years (range: 9–74) suffered narcolepsy (n=94, 66% with cataplexy), idiopathic (n=37) and symptomatic hypersomnia (n=8) r...
Source: Sleep Medicine - October 2, 2012 Category: Sleep Medicine Authors: Nandini Nittur, Eric Konofal, Yves Dauvilliers, Patricia Franco, Smaranda Leu-Semenescu, Valérie Cochen De Cock, Clara O. Inocente, Sophie Bayard, Sabine Scholtz, Michel Lecendreux, Isabelle Arnulf Tags: Original Articles Source Type: research

An inhalational swine model for the characterization of physiological effects and toxicological profile associated with cyanide poisoning.
Authors: Rivera-Burgos D, Babin MC, Staugler JM, Vinci T, Perry MR Abstract Cyanides are highly toxic compounds that have been used as weapons of terrorism throughout history. Cyanide (CN) is acutely toxic by all routes of administration; however, inhalation is the main exposure route. To adequately test effective countermeasures against inhalational CN threats, robust and well-characterized animal models are needed. This paper describes the initial development of a hydrogen cyanide (HCN) exposure swine model for documenting the physiological effects and toxicological profile during and after HCN inhalation exposur...
Source: Inhalation Toxicology - February 14, 2019 Category: Respiratory Medicine Tags: Inhal Toxicol Source Type: research

The Autonomic Effects of Cardiopulmonary Decompression Sickness in Swine using Principal Dynamic Mode Analysis.
Abstract Methods to predict onset of cardio-pulmonary (CP) decompression sickness (DCS) would be of great benefit to clinicians caring for stricken divers. Principal dynamic mode (PDM) analysis of the electrocardiogram has been shown to provide accurate separation of the sympathetic and parasympathetic tone dynamics. Nine swine (Sus scrofa) underwent a 15 hour saturation dive at 184 kPa (60 ft. of saltwater) in a hyperbaric chamber followed by dropout decompression, while six swine, used as a control, underwent a 15 hour saturation dive at 15 kPa (5 ft. of saltwater). Non-invasive electrocardiograms were recorded ...
Source: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology - July 24, 2013 Category: Physiology Authors: Bai Y, Petersen K, Mahon RT, Cronin WA, Selvaraj N, White J, Brink PR, Chon KH Tags: Am J Physiol Regul Integr Comp Physiol Source Type: research

Hypersensitivity Reactions to Intravenous Lipid Emulsion in Swine: Relevance for Lipid Resuscitation Studies.
CONCLUSIONS:: ILE causes clinically significant hemodynamic changes in pigs, in concert with significant increases in the plasma thromboxane concentration. However, the in vitro tests did not confirm involvement of the complement system in human sera, leaving the underlying mechanism of these findings in doubt. Nonetheless, the observed hemodynamic and biochemical effects of ILE serve as a caveat that the pig is not an ideal model for the study of interventions involving ILE. PMID: 25126705 [PubMed - as supplied by publisher]
Source: Anesthesia and Analgesia - August 14, 2014 Category: Anesthesiology Authors: Bedocs P, Capacchione J, Potts L, Chugani R, Weiszhar Z, Szebeni J, Buckenmaier CC Tags: Anesth Analg Source Type: research

Intracranial Pulsating Balloon-Based Cardiac-Gated ICP Modulation Impact on Brain Oxygenation: A Proof-of-Concept Study in a Swine Model
ConclusionsIntracranial cardiac-gated balloon pump activation can influence cerebral oxygenation and raise PbtO2 above threshold values. This study supports the concept of late-diastolic pressure rise, coupled with early-systolic pressure drop, as a potential effector of flow augmentation leading to improve brain tissue oxygenation. Further studies are warranted to assess the translational potential of using an intracranial cardiac-gated balloon pump device to improve brain tissue oxygenation.
Source: Neurocritical Care - November 18, 2022 Category: Neurology Source Type: research

Screening for atrial fibrillation in patients aged 65 years or over attending annual flu vaccination clinics at a single general practice.
CONCLUSIONS: Screening was ineffective. ECG immediately after pulse assessment is essential. Screening was acceptable to patients but required additional resources. Age groups 65-74 and ≥ 85 years were not adequately screened using flu clinics. Novel methods screening older, non-attending patients are required. Practices should introduce annual pulse checks into chronic disease templates and prompts for those aged ≥ 65 years attending surgery. Additional screening should target practices with low AF prevalence or poor rates of opportunistic screening. PMID: 23735694 [PubMed - in process]
Source: Quality in Primary Care - May 1, 2013 Category: Primary Care Authors: Rhys GC, Azhar MF, Foster A Tags: Qual Prim Care Source Type: research

Voltage-based device tracking in a 1.5 tesla MRI during imaging: initial validation in swine models.
CONCLUSION: An MRI-compatible VDT system is feasible. Magn Reson Med, 2013. © 2013 Wiley Periodicals, Inc. PMID: 23580479 [PubMed - as supplied by publisher]
Source: Magnetic Resonance in Medicine - April 11, 2013 Category: Radiology Authors: Schmidt EJ, Tse ZT, Reichlin TR, Michaud GF, Watkins RD, Butts-Pauly K, Kwong RY, Stevenson W, Schweitzer J, Byrd I, Dumoulin CL Tags: Magn Reson Med Source Type: research

The autonomic effects of cardiopulmonary decompression sickness in swine using principal dynamic mode analysis
Methods to predict onset of cardiopulmonary (CP) decompression sickness (DCS) would be of great benefit to clinicians caring for stricken divers. Principal dynamic mode (PDM) analysis of the electrocardiogram has been shown to provide accurate separation of the sympathetic and parasympathetic tone dynamics. Nine swine (Sus scrofa) underwent a 15-h saturation dive at 184 kPa (60 ft. of saltwater) in a hyperbaric chamber followed by dropout decompression, whereas six swine, used as a control, underwent a 15-h saturation dive at 15 kPa (5 ft. of saltwater). Noninvasive electrocardiograms were recorded throughout the experimen...
Source: AJP: Regulatory, Integrative and Comparative Physiology - October 1, 2013 Category: Physiology Authors: Bai, Y., Selvaraj, N., Petersen, K., Mahon, R., Cronin, W. A., White, J., Brink, P. R., Chon, K. H. Tags: Cardiovascular and Renal Integration Source Type: research

Electrocardiogram frequency change by extracorporeal blood perfusion in a swine ventricular fibrillation model
Conclusions: The ECG frequency analysis during ECPR can give the resuscitation provider important information about the cardiac perfusion status and the appropriateness of the ECPR setup as well as the prediction of defibrillation success.
Source: BioMedical Engineering OnLine - November 25, 2013 Category: Biomedical Engineering Authors: Jung LeeGil SuhHee Kim Source Type: research

Intravenous Lipid Emulsion Therapy Does Not Improve Hypotension Compared to Sodium Bicarbonate for Tricyclic Antidepressant Toxicity: A Randomized, Controlled Pilot Study in a Swine Model.
CONCLUSIONS: Intravenous lipid emulsion treatment failed to improve amitriptyline-induced hypotension when compared to the standard treatment of sodium bicarbonate in a large animal model of severe TCA overdose. Larger groups with better survival may yield different results from the high mortality observed in this pilot study. Similar amounts of amitriptyline were found in the aqueous and lipid layers. These conclusions are limited to a single ILE regimen. PMID: 25377397 [PubMed - as supplied by publisher]
Source: Accident and Emergency Nursing - November 1, 2014 Category: Emergency Medicine Authors: Varney SM, Bebarta VS, Vargas TE, Boudreau S, Castaneda M Tags: Acad Emerg Med Source Type: research

Longitudinal evaluation of diastolic dyssynchrony by SPECT gated myocardial perfusion imaging early after acute myocardial infarction and the relationship with left ventricular remodeling progression in a swine model
ConclusionsPhase analysis of SPECT GMPI can accurately and reliably characterize LVDD. LVDD occurred on the first day after AMI, reached its peak at 1 week, and partially recovered at 4 weeks after AMI. LVDD as evaluated by phase analysis of SPECT GMPI early after AMI was significantly associated with the progression of LVR. The early assessment of LVDD after AMI may provide helpful information for predicting the progression of LVR in the future.
Source: Journal of Nuclear Cardiology - January 27, 2021 Category: Nuclear Medicine Source Type: research

Voltage‐based device tracking in a 1.5 tesla MRI during imaging: initial validation in swine models
ConclusionAn MRI‐compatible VDT system is feasible. Magn Reson Med, 2013. © 2013 Wiley Periodicals, Inc.
Source: Magnetic Resonance in Medicine - April 11, 2013 Category: Radiology Authors: Ehud J. Schmidt, Zion T. H. Tse, Tobias R. Reichlin, Gregory F. Michaud, Ronald D. Watkins, Kim Butts‐Pauly, Raymond Y. Kwong, William Stevenson, Jeffrey Schweitzer, Israel Byrd, Charles L. Dumoulin Tags: Full Paper Source Type: research

Transplantation of induced pluripotent stem cells ameliorates neural remodeling and reduces ventricular arrhythmias in a post‐infarcted swine model
In conclusion, iPSc intramyocardial transplantation reduces vulnerability to VAs, and the mechanism was related to the remodeling amelioration of autonomic nerves and gap junctions. Moreover, possible mechanisms of iPSc transplantation in improving neural remodeling may be related to attenuated oxidative stress and inflammatory response. J. Cell. Biochem. © 2013 Wiley Periodicals, Inc.
Source: Journal of Cellular Biochemistry - October 5, 2013 Category: Biochemistry Authors: Fengxiang Zhang, Guixian Song, Xiaorong Li, Weijuan Gu, Yahui Shen, Minglong Chen, Bing Yang, Lingmei Qian, Kejiang Cao Tags: Article Source Type: research