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Electrophysiology (cardiology)
Cardiac electrophysiology is a branch of cardiology and basic science focusing on the electrical activities of the heart. The term is usually used in clinical context, to describe studies of such phenomena by invasive (intracardiac) catheter recording of spontaneous activity as well as of cardiac responses to programmed electrical stimulation - clinical cardiac electrophysiology. However, cardiac electrophysiology also encompasses basic research and translational research components. Specialists studying cardiac electrophysiology, either clinically or solely through research, are known as cardiac electrophysiologists. Description Electrophysiological (EP) studies are performed to assess complex arrhythmias, elucidate symptoms, evaluate abnormal electrocardiograms, assess risk of developing arrhythmias in the future, and design treatment. These procedures include therapeutic methods (typically radiofrequency ablation, or cryoablation) in addition to diagnostic and prognostic proced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventricular Fibrillation
Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. It is due to disorganized electrical activity. Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. This is followed by sudden cardiac death in the absence of treatment. Ventricular fibrillation is initially found in about 10% of people with cardiac arrest. Ventricular fibrillation can occur due to coronary heart disease, valvular heart disease, cardiomyopathy, Brugada syndrome, long QT syndrome, electric shock, or intracranial hemorrhage. Diagnosis is by an electrocardiogram (ECG) showing irregular unformed QRS complexes without any clear P waves. An important differential diagnosis is torsades de pointes. Treatment is with cardiopulmonary resuscitation (CPR) and defibrillation. Biphasic defibrillation may be better than monophasic. The medication epinephrine or amiodarone may be given if initial treatments are not effect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Pennsylvania School Of Medicine
The Perelman School of Medicine, commonly known as Penn Med, is the medical school of the University of Pennsylvania, a private research university in Philadelphia, Pennsylvania. Founded in 1765, the Perelman School of Medicine is the oldest medical school in the United States and is one of the seven Ivy League medical schools. Penn Med is consistently one of the top recipients of NIH research awards and is currently ranked sixth for research among American medical schools by '' U.S. News & World Report''. History The school of medicine was founded by Dr. John Morgan, a graduate of the College of Philadelphia (the precursor of the University of Pennsylvania) and the University of Edinburgh Medical School. After training in Edinburgh and other European cities, Dr. Morgan returned to Philadelphia in 1765. With fellow University of Edinburgh Medical School graduate Dr. William Shippen Jr., Morgan persuaded the college's trustees to found the first medical school in the Original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Josephson
Mark E. Josephson (1943-2017) was an American cardiologist and writer, who was in the 1970s one of the American pioneers of the medical cardiology subspecialty of cardiac electrophysiology. His book titled ''Clinical Cardiac Electrophysiology: Techniques and Interpretations'' is widely acknowledged as the definitive treatment of the discipline. He served as Herman Dana Professor of Medicine at Harvard Medical School, director of the Harvard-Thorndike Electrophysiology Institute and Arrhythmia Service and the chief of cardiology at Harvard University's Beth Israel Deaconess Medical Center in Boston. Career Josephson was a graduate of Trinity College in Connecticut and subsequently went to medical school at Columbia University College of Physicians and Surgeons. He completed his residency training in Internal Medicine at Mount Sinai Hospital in New York City and his cardiology fellowship at the Perelman School of Medicine at the University of Pennsylvania.Marchlinski, Francis. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maastricht, Netherlands
Maastricht ( , , ; li, Mestreech ; french: Maestricht ; es, Mastrique ) is a city and a municipality in the southeastern Netherlands. It is the capital and largest city of the province of Limburg. Maastricht is located on both sides of the Meuse ( nl, Maas), at the point where the Jeker joins it. Mount Saint Peter (''Sint-Pietersberg'') is largely situated within the city's municipal borders. Maastricht is about 175 km south east of the capital Amsterdam and 65 km from Eindhoven; it is adjacent to the border with Belgium and is part of the Meuse-Rhine Euroregion, an international metropolis with a population of about 3.9 million, which includes the nearby German and Belgian cities of Aachen, Liège and Hasselt. Maastricht developed from a Roman settlement (''Trajectum ad Mosam'') to a medieval religious centre. In the 16th century it became a garrison town and in the 19th century an early industrial centre. Today, the city is a thriving cultural and regional hub. It bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netherlands
) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherlands , established_title2 = Act of Abjuration , established_date2 = 26 July 1581 , established_title3 = Peace of Münster , established_date3 = 30 January 1648 , established_title4 = Kingdom established , established_date4 = 16 March 1815 , established_title5 = Liberation Day (Netherlands), Liberation Day , established_date5 = 5 May 1945 , established_title6 = Charter for the Kingdom of the Netherlands, Kingdom Charter , established_date6 = 15 December 1954 , established_title7 = Dissolution of the Netherlands Antilles, Caribbean reorganisation , established_date7 = 10 October 2010 , official_languages = Dutch language, Dutch , languages_type = Regional languages , languages_sub = yes , languages = , languages2_type = Reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Maastricht
Maastricht University (abbreviated as UM; nl, Universiteit Maastricht) is a public research university in Maastricht, Netherlands. Founded in 1976, it is the second youngest of the thirteen Dutch universities. In 2021, 22,383 students studied at Maastricht University, 56% of whom were foreign students, with over 4,000 employees. About half of the bachelor's programmes are fully offered in English, while the other half is taught wholly or partly in Dutch. Most of the master's and doctoral programmes are in English. Besides traditional programmes, Maastricht University also has three honours liberal arts colleges: University College Maastricht and the Maastricht Science Programme in the same liberal arts tradition. The satellite University College Venlo opened in 2015. Maastricht University regularly ranks as one of Europe's leading universities. The university has been placed in the top 300 universities in the world by five major ranking tables. Maastricht University was at 88th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hein Wellens
Henrick Joan Joost (Hein J. J. ) Wellens, M.D., (1935–2020) was a Dutch cardiologist who is considered one of the founding fathers clinical cardiac electrophysiology - a discipline which enables patients with cardiac arrhythmias to have catheter electrode mapping and ablation. Wellens was known among European cardiologists as "the giant of Maastricht" and for many years was associated with the University of Limburg School of Medicine in Maastricht, Netherlands. At his department of cardiology, many future clinical cardiac electrophysiologists trained from 1976 until his retirement in 2002. Early life and education Wellens was born on 13 November 1935 in The Hague, the Netherlands. He studied medicine at the University of Leiden. Following two years of internal medicine, he did three years of cardiology in the Wilhelmina Gasthuis Hospital of the University of Amsterdam under the guidance of Prof Dirk Durrer. Contributions to medicine In the late 1960s, at the University Hosp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Mapping
Optical mapping is a technique for constructing ordered, genome-wide, high-resolution restriction maps from single, stained molecules of DNA, called "optical maps". By mapping the location of restriction enzyme sites along the unknown DNA of an organism, the spectrum of resulting DNA fragments collectively serves as a unique "fingerprint" or "barcode" for that sequence. Originally developed by Dr. David C. Schwartz and his lab at NYU in the 1990s Schwartz, D. C., et al. "Ordered Restriction Maps of Saccharomyces Cerevisiae Chromosomes Constructed by Optical Mapping." Science 262.5130 (1993): 110–4. this method has since been integral to the assembly process of many large-scale sequencing projects for both microbial and eukaryotic genomes. Later technologies use DNA melting, DNA competitive binding or enzymatic labelling in order to create the optical mappings. Technology The modern optical mapping platform works as follows:Dimalanta, E.T. ''et al.'' A microfluidic system for larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patch Clamp
The patch clamp technique is a laboratory technique in electrophysiology used to study ionic currents in individual isolated living cells, tissue sections, or patches of cell membrane. The technique is especially useful in the study of excitable cells such as neurons, cardiomyocytes, muscle fibers, and pancreatic beta cells, and can also be applied to the study of bacterial ion channels in specially prepared giant spheroplasts. Patch clamping can be performed using the voltage clamp technique. In this case, the voltage across the cell membrane is controlled by the experimenter and the resulting currents are recorded. Alternatively, the current clamp technique can be used. In this case, the current passing across the membrane is controlled by the experimenter and the resulting changes in voltage are recorded, generally in the form of action potentials. Erwin Neher and Bert Sakmann developed the patch clamp in the late 1970s and early 1980s. This discovery made it possible to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Principal Investigator
In many countries, the term principal investigator (PI) refers to the holder of an independent grant and the lead researcher for the grant project, usually in the sciences, such as a laboratory study or a clinical trial. The phrase is also often used as a synonym for "head of the laboratory" or "research group leader". While the expression is common in the sciences, it is used widely for the person or persons who make final decisions and supervise funding and expenditures on a given research project. A co-investigator (Co-I) assists the principal investigator in the management and leadership of the research project. There may be a number of co-investigators supporting a PI. Federal funding In the context of United States federal funding from agencies such as the National Institutes of Health (NIH) or the National Science Foundation (NSF), the PI is the person who takes direct responsibility for completion of a funded project, directing the research and reporting directly to the fun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physiology
Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical and physical functions in a living system. According to the classes of organisms, the field can be divided into medical physiology, animal physiology, plant physiology, cell physiology, and comparative physiology. Central to physiological functioning are biophysical and biochemical processes, homeostatic control mechanisms, and communication between cells. ''Physiological state'' is the condition of normal function. In contrast, ''pathological state'' refers to abnormal conditions, including human diseases. The Nobel Prize in Physiology or Medicine is awarded by the Royal Swedish Academy of Sciences for exceptional scientific achievements in physiology related to the field of medicine. Foundations Cells Although there are differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
