keyword
MENU ▼
Read by QxMD icon Read
search

Cardiac stunning

keyword
https://www.readbyqxmd.com/read/29761408/parametric-imaging-for-the-assessment-of-cardiac-motion-a-review
#1
REVIEW
Narjes Benameur, Enrico Gianluca Caiani, Younes Arous, Nejmeddine Ben Abdallah, Tarek Kraiem
The assessment of wall motion abnormalities such as hypokinesia or dyskinesia and the identification of their extent as well as their degree of severity allow an accurate evaluation of several ischemic heart diseases and an early diagnosis of heart failure. These dysfunctions are usually revealed by a drop of contraction indicating a regional hypokinesia or a total absence of the wall motion in case of akinesia. The discrimination between these contraction abnormalities plays also a significant role in the therapeutic decision through the differentiation between the infarcted zones, which have lost their contractile function, and the stunned areas that still retain viable myocardial tissues...
May 14, 2018: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29758093/effects-of-human-electro-muscular-incapacitation-hemi-devices-on-cardiovascular-changes-in-anesthetized-swine-as-measured-by-transesophageal-echocardiography-tee
#2
Jacob R Werner, W Bosseau Murray, Mary J Kennett, David M Jenkins, Edward Liszka, Edward L Hughes
The abundance of, and reliance upon, human electro-muscular incapacitation (HEMI) devices, especially in law enforcement, has generated scrutiny and examination of these technologies. The purpose of this study was to examine cardiovascular effects resulting from typical (5 sec) and longer activation (20 sec) HEMI applications studying myocardial function and peripheral vascular system using a combination of invasive cardiovascular catheters and transesophageal echocardiography (TEE). Six healthy swine (Sus scrofa) 3-5 months in age and weighing between 60 and 86 kg were anesthetized and exposed to the TASER Model X26 waveform while transesophageal echocardiography was performed...
May 14, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29721682/-infarct-related-cardiogenic-shock-prognosis-and-treatment
#3
REVIEW
R Prondzinsky, H Lemm, A Geppert, M Buerke, M Russ, K Werdan
Patients with ST segment elevation myocardial infarction (STEMI) and non-ST segment elevation myocardial infarction (NSTEMI) experience cardiogenic shock in about 6-10% of cases during the hospital treatment. In recent years, the incidence seems to be decreasing due to invasive diagnostics and therapy after myocardial infarction. Early diagnosis is important to initiate immediate revascularization using percutaneous coronary intervention (PCI) with stent implantation as part of cardiogenic shock treatment. Thus, a significant improvement in survival can be achieved...
May 2, 2018: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/29721672/outcomes-of-patients-requiring-extracorporeal-membrane-oxygenation-in-transcatheter-aortic-valve-implantation-a-clinical-case-series
#4
Ryosuke Higuchi, Tetsuya Tobaru, Kenichi Hagiya, Mike Saji, Itaru Takamisawa, Jun Shimizu, Nobuo Iguchi, Shuichiro Takanashi, Morimasa Takayama, Mitsuaki Isobe
Transcatheter aortic valve implantation (TAVI) has been established as a low-invasive therapy for aortic stenosis, but circulatory collapse necessitating mechanical circulatory support could occur during TAVI due to procedure itself or procedural complications. The purpose of this study is to describe the outcomes of patients requiring extracorporeal membrane oxygenation (ECMO) in TAVI. Among 384 consecutive patients undergoing TAVI from April 2010 to July 2017 in Sakakibara Heart Institute, we evaluated seven patients (1...
May 2, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29592914/the-ebb-and-flow-of-echocardiographic-cardiac-function-parameters-in-relationship-to-hemodialysis-treatment-in-patients-with-esrd
#5
Charalampos Loutradis, Pantelis A Sarafidis, Christodoulos E Papadopoulos, Aikaterini Papagianni, Carmine Zoccali
Cardiovascular disease is the leading cause of mortality in patients receiving hemodialysis. Cardiovascular events in these patients demonstrate a day-of-week pattern; i.e., they occur more commonly during the last day of the long interdialytic interval and the first session of the week. The hemodialysis process causes acute decreases in cardiac chamber size and pulmonary circulation loading and acute diastolic dysfunction, possibly through myocardial stunning and other non-myocardial-related mechanisms; systolic function, in contrast, is largely unchanged...
May 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29587364/baicalein-rescues-delayed-cooling-via-preservation-of-akt-activation-and-akt-mediated-phospholamban-phosphorylation
#6
Zuohui Shao, Sy-Jou Chen, Xiangdong Zhu, Chunpei Lee, Hsien-Hao Huang, Angelo Meliton, Changqing Li, Terry L Vanden Hoek, Jing Li
Cooling reduces the ischemia/reperfusion (I/R) injury seen in sudden cardiac arrest (SCA) by decreasing the burst of reactive oxygen species (ROS). Its cardioprotection is diminished when delay in reaching the target temperature occurs. Baicalein, a flavonoid derived from the root of Scutellaria baicalensis G e orgi , possesses antioxidant properties. Therefore, we hypothesized that baicalein can rescue cooling cardioprotection when cooling is delayed. Two murine cardiomyocyte models, an I/R model (90 min ischemia/3 h reperfusion) and stunning model (30 min ischemia/90 min reperfusion), were used to assess cell survival and contractility, respectively...
March 24, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29502718/acute-cardiac-complications-in-critical-brain-disease
#7
REVIEW
Juan G Ripoll, Joseph L Blackshear, José L Díaz-Gómez
Acute cardiac complications in critical brain disease should be understood as a clinical condition representing an intense brain-heart crosstalk and might mimic ischemic heart disease. Two main entities (neurogenic stunned myocardium [NSM] and stress cardiomyopathy) have been better characterized in the neurocritically ill patients and they portend worse clinical outcomes in these cases. The pathophysiology of NSM remains elusive. However, significant progress has been made on the early identification of neurocardiac compromise following acute critical brain disease...
April 2018: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/29360287/percutaneous-perfusion-monitoring-for-the-detection-of-hemodialysis-induced-cardiovascular-injury
#8
Jarrin D Penny, Claire Grant, Fabio Salerno, Anne Brumfield, Marcus Mianulli, Lori Poole, Christopher W Mcintyre
INTRODUCTION: The safe delivery of hemodialysis (HD) faces dual challenges; the accurate detection of systemic circulatory stress producing cardiovascular (CV) injury, and the ability to enable effective preemptive intervention for such injury. We performed a pilot study to examine the capability of a new noninvasive, real-time monitoring system to detect the deleterious effects of HD on CV stability. METHODS: Eight patients were evaluated with echocardiography prior to the initiation of HD and again at peak HD stress...
January 23, 2018: Hemodialysis International
https://www.readbyqxmd.com/read/29239459/ischemic-left-ventricle-systolic-dysfunction-an-evidence-based-approach-in-diagnostic-tools-and-therapeutics
#9
REVIEW
Eduardo Gomes Lima, Felipe Pereira Câmara de Carvalho, Jaime Paula Pessoa Linhares Filho, Fabio Grunspun Pitta, Carlos Vicente Serrano
Coronary artery disease (CAD) associated with left ventricular systolic dysfunction is a condition related to poor prognosis. There is a lack of robust evidence in many aspects related to this condition, from definition to treatment. Ischemic cardiomyopathy is a spectrum ranging from stunned myocardium associated with myocardial fibrosis to hibernating myocardium and repetitive episodes of ischemia. In clinical practice, relevance lies in identifying the myocardium that has the ability to recover its contractile reserve after revascularization...
September 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29221768/current-interpretation-of-myocardial-stunning
#10
REVIEW
Andrea Igoren Guaricci, Gabriella Bulzis, Gianluca Pontone, Pietro Scicchitano, Rossella Carbonara, Mark Rabbat, Delia De Santis, Marco Matteo Ciccone
Myocardial stunning is a temporary post-ischemic cardiac mechanical dysfunction. As such, it is a heterogeneous entity and different conditions can promote its occurrence. Transient coronary occlusion, increased production of catecholamines and endothelin, and myocardial inflammation are all possible causes of myocardial stunning. Possible underlying mechanisms include an oxyradical hypothesis, calcium overload, decreased responsiveness of myofilaments to calcium, and excitation-contraction uncoupling due to sarcoplasmic reticulum dysfunction...
November 27, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29169759/abnormal-coronary-vasoreactivity-in-transient-left-ventricular-apical-ballooning-tako-tsubo-syndrome
#11
Edoardo Verna, Stefano Provasoli, Sergio Ghiringhelli, Fabrizio Morandi, Jorge Salerno-Uriarte
BACKGROUND: The exact etiology and pathophysiologic mechanisms of tako-tsubo syndrome (TTS) remain controversial. OBJECTIVE: To further evaluate the abnormal coronary vasoreactivity and its possible anatomical substrate in TTS. METHODS: We studied 47 patients (46 women; age 67±12years) who underwent diagnostic cardiac catheterization and evaluation of coronary vasoreactivity by sequential acetylcholine (Ach), nitroglycerine and adenosine testing with angiographic and intracoronary pressure-Doppler flow monitoring...
January 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29154687/pyruvate-enhancement-of-cardiac-performance-cellular-mechanisms-and-clinical-application
#12
Robert T Mallet, Albert H Olivencia-Yurvati, Rolf Bünger
Cardiac contractile function is adenosine-5'-triphosphate (ATP)-intensive, and the myocardium's high demand for oxygen and energy substrates leaves it acutely vulnerable to interruptions in its blood supply. The myriad cardioprotective properties of the natural intermediary metabolite pyruvate make it a potentially powerful intervention against the complex injury cascade ignited by myocardial ischemia-reperfusion. A readily oxidized metabolic substrate, pyruvate augments myocardial free energy of ATP hydrolysis to a greater extent than the physiological fuels glucose, lactate and fatty acids, particularly when it is provided at supra-physiological plasma concentrations...
January 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29018519/limitations-and-challenges-in-mapping-ventricular-tachycardia-new-technologies-and-future-directions
#13
Adam J Graham, Michele Orini, Pier D Lambiase
Recurrent episodes of ventricular tachycardia in patients with structural heart disease are associated with increased mortality and morbidity, despite the life-saving benefits of implantable cardiac defibrillators. Reducing implantable cardiac defibrillator therapies is important, as recurrent shocks can cause increased myocardial damage and stunning, despite the conversion of ventricular tachycardia/ventricular fibrillation. Catheter ablation has emerged as a potential therapeutic option either for primary or secondary prevention of these arrhythmias, particularly in post-myocardial infarction cases where the substrate is well defined...
August 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28979949/brief-myocardial-ischemia-produces-cardiac-troponin-i-release-and-focal-myocyte-apoptosis-in-the-absence-of-pathological-infarction-in-swine
#14
Brian R Weil, Rebeccah F Young, Xiaomeng Shen, Gen Suzuki, Jun Qu, Saurabh Malhotra, John M Canty
In a porcine model of brief ischemia leading to reversible stunning in the absence of tissue necrosis, we demonstrated delayed release of cTnI that exceeded the 99(th) percentile for normals 60-minutes after reperfusion and rose to readily detectable levels 24-hours later. While tissue analysis at 60-minutes showed no evidence of infarction, TUNEL staining demonstrated isolated myocytes undergoing apoptosis, which was absent after 24-hours. These results demonstrate that cTnI elevations occur after ischemia of a duration that is insufficient to produce myocyte necrosis and reflect myocyte injury associated with delayed apoptosis in the absence of pathological evidence of infarction...
April 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/28962813/acute-cardiac-complications-in-critical-brain-disease
#15
REVIEW
Juan G Ripoll, Joseph L Blackshear, José L Díaz-Gómez
Acute cardiac complications in critical brain disease should be understood as a clinical condition representing an intense brain-heart crosstalk and might mimic ischemic heart disease. Two main entities (neurogenic stunned myocardium [NSM] and stress cardiomyopathy) have been better characterized in the neurocritically ill patients and they portend worse clinical outcomes in these cases. The pathophysiology of NSM remains elusive. However, significant progress has been made on the early identification of neurocardiac compromise following acute critical brain disease...
November 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28917560/outcomes-of-rescue-cardiopulmonary-support-for-periprocedural-acute-hemodynamic-decompensation-in-patients-undergoing-catheter-ablation-of-electrical-storm
#16
Andres Enriquez, Jackson Liang, Javier Gentile, Robert D Schaller, Gregory E Supple, David S Frankel, Fermin C Garcia, Joyce Wald, Edo Y Birati, J Eduardo Rame, Christian Bermudez, David J Callans, Francis E Marchlinski, Pasquale Santangeli
BACKGROUND: In patients with ventricular tachycardia or ventricular fibrillation (VT/VF) electrical storm (ES) undergoing catheter ablation (CA), hypotension due to refractory VT/VF, use of anesthesia, and cardiac stunning due to repeated implantable cardioverter-defibrillator shocks might precipitate acute hemodynamic decompensation (AHD). OBJECTIVE: We evaluated the outcomes of emergent cardiopulmonary support with extracorporeal membrane oxygenation (ECMO) to rescue AHD in patients undergoing CA of ES...
January 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28875040/a-review-of-neurogenic-stunned-myocardium
#17
REVIEW
Sylvia Biso, Supakanya Wongrakpanich, Akanksha Agrawal, Sujani Yadlapati, Marina Kishlyansky, Vincent Figueredo
Neurologic stunned myocardium (NSM) is a phenomenon where neurologic events give rise to cardiac abnormalities. Neurologic events like stroke and seizures cause sympathetic storm and autonomic dysregulation that result in myocardial injury. The clinical presentation can involve troponin elevation, left ventricular dysfunction, and ECG changes. These findings are similar to Takotsubo cardiomyopathy and acute coronary syndrome. It is difficult to distinguish NSM from acute coronary syndrome based on clinical presentation alone...
2017: Cardiovascular Psychiatry and Neurology
https://www.readbyqxmd.com/read/28854742/impact-of-alternative-electrical-stunning-parameters-on-the-ability-of-broilers-to-recover-consciousness-and-meat-quality
#18
D V Bourassa, B C Bowker, H Zhuang, K M Wilson, C E Harris, R J Buhr
Broilers in the United States are typically electrically stunned using low voltage-high frequency (12-38 V, ≥400 Hz) DC or AC water bath stunners. In the European Union, however, broilers are required to be electrocuted using high voltage-low frequency (50-150 V, 50-350 Hz) AC. Low voltage stunned broilers regain consciousness in the absence of bleeding. In contrast, high voltage stunned broilers die due to induction of cardiac fibrillation. For birds stunned with low voltage systems, concerns have been raised regarding animal welfare during bleeding...
September 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28814251/the-role-of-radiopharmaceuticals-in-amiodarone-induced-thyroid-pathology
#19
Alexandru Irimie, Doina Piciu
BACKGROUND AND OBJECTIVE: The use of amiodarone for the treatment of ventricular and supraventricular dysrhythmias brings in organism an increased amount of iodine, interfering with thyroid function. If the treatment needs to be interrupted, iodine remains at abnormal levels for months or even years. The aim of the study was to review the literature regarding the optimal tests for early diagnostic and to analyze the role of nuclear medicine tests in the differential and correct assessment of the amiodarone-induced thyroid pathology...
November 10, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28811222/antitussive-antispasmodic-bronchodilating-and-cardiac-inotropic-effects-of-the-essential-oil-from-blepharocalyx-salicifolius-leaves
#20
Jehison Jiménez Hernández, María Inés Ragone, Patricia Bonazzola, Arnaldo L Bandoni, Alicia E Consolini
ETHNOPHARMACOLOGY RELEVANCE: Blepharocalyx salicifolius (Kunth) O. Berg (Myrtaceae) is a tree native to Argentina and Uruguay that grows and is cultivated along the riverside of the Rio de la Plata. The leaves of this plant species, locally known as "anacahuita" are used in South America to prepare infusions for the empiric treatment of cough and bronchospasm, as well as diarrhoea and other intestinal disorders. Although previous phytochemical studies have been performed with the essential oil extracted from Blepharocalyx salicifolius, pharmacological evidence supporting its traditional use is still lacking...
August 12, 2017: Journal of Ethnopharmacology
keyword
keyword
93067
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"