上海第二医科大学仁济临床医学院
... 2. They have an aberrant shape. The QRS complex is abnormally wide, usually 0.12 second (three small time boxes) or more in duration, and the T wave and QRS complex usually point in opposite directions. PVCs may occur with varying frequency. Two in a row are called a couplet. Three in a row are ...
... 2. They have an aberrant shape. The QRS complex is abnormally wide, usually 0.12 second (three small time boxes) or more in duration, and the T wave and QRS complex usually point in opposite directions. PVCs may occur with varying frequency. Two in a row are called a couplet. Three in a row are ...
Effect of physical exercise on autonomic regulation of heart rate
... against harmful cardiac events by increasing parasympathetic tone and also by decreasing cardiac sympathetic activity (Billman 2002). Therefore, physical training has been proposed to reduce harmful cardiac events by improving aerobic capacity. Substantial heterogeneity in the responsiveness to phys ...
... against harmful cardiac events by increasing parasympathetic tone and also by decreasing cardiac sympathetic activity (Billman 2002). Therefore, physical training has been proposed to reduce harmful cardiac events by improving aerobic capacity. Substantial heterogeneity in the responsiveness to phys ...
EKG Fundamentals
... 1. Determine which lead contains the most equiphasic QRS complex. The fact that the QRS complex in this lead is equally positive and negative indicates that the net electrical vector (i.e. overall QRS axis) is perpendicular to the axis of this particular lead. 2. Examine the QRS complex in whichever ...
... 1. Determine which lead contains the most equiphasic QRS complex. The fact that the QRS complex in this lead is equally positive and negative indicates that the net electrical vector (i.e. overall QRS axis) is perpendicular to the axis of this particular lead. 2. Examine the QRS complex in whichever ...
Natural history of ventricular premature contractions in
... Aims Premature ventricular contractions (PVCs) are thought to be innocent in children with normal hearts, especially if they disappear during exercise. The aim of our study was to study the natural history of PVCs in childhood and whether there is a difference between PVCs originating from the right ...
... Aims Premature ventricular contractions (PVCs) are thought to be innocent in children with normal hearts, especially if they disappear during exercise. The aim of our study was to study the natural history of PVCs in childhood and whether there is a difference between PVCs originating from the right ...
Pulmonary atresia with intact ventricular septum
... nection between the superior caval vein and the right pulmonary artery. In 1971, the French surgeons Fontan and Baudet (1971) described the atriopulmonary connection with the purpose of draining all the caval blood directly to the pulmonary circulation, without passing through the right ventricle. ...
... nection between the superior caval vein and the right pulmonary artery. In 1971, the French surgeons Fontan and Baudet (1971) described the atriopulmonary connection with the purpose of draining all the caval blood directly to the pulmonary circulation, without passing through the right ventricle. ...
Anomalous Origin of the Left Coronary Artery from the Pulmonary
... such patients are in good health, and a few have normal ECGs. Survival beyond the first year may also be related to marked right coronary dominance, with this vessel supplying not only the diaphragmatic portion of the left ventricle but also much of the septum and lateral wall [6]. When severe sympt ...
... such patients are in good health, and a few have normal ECGs. Survival beyond the first year may also be related to marked right coronary dominance, with this vessel supplying not only the diaphragmatic portion of the left ventricle but also much of the septum and lateral wall [6]. When severe sympt ...
Closure of atrial septal defect in the adult. Cardiac remodeling is an
... frequency of atrial fibrillation among them compared to normotensives (67 % vs 30 %, p=0.06). No patient had a history of myocardial infarction or angina pectoris. Pre-closure stress test was performed in 23 of the 39 patients without findings making ischemic heart disease likely. The majority of th ...
... frequency of atrial fibrillation among them compared to normotensives (67 % vs 30 %, p=0.06). No patient had a history of myocardial infarction or angina pectoris. Pre-closure stress test was performed in 23 of the 39 patients without findings making ischemic heart disease likely. The majority of th ...
Prevalence and characteristics of ectopic atrial tachycardia
... The prevalence of IST in a random sample of 604 middle-aged subjects was 1.16%. The systolic and diastolic ambulatory blood pressures were higher among the subjects with IST than subjects with SR (P < 0.001). The other laboratory, echocardiographic and personality measurements, with the exception of ...
... The prevalence of IST in a random sample of 604 middle-aged subjects was 1.16%. The systolic and diastolic ambulatory blood pressures were higher among the subjects with IST than subjects with SR (P < 0.001). The other laboratory, echocardiographic and personality measurements, with the exception of ...
PRODUCT MONOGRAPH HYDRALAZINE
... palate and malformation of facial and cranial bones. There are no adequate and well-controlled studies in pregnant women. Although clinical experience does not include ...
... palate and malformation of facial and cranial bones. There are no adequate and well-controlled studies in pregnant women. Although clinical experience does not include ...
ACC/AHA Guidelines for the Management of Patients With Unstable
... Definition of Terminology Related to UA ........................1040 Appendix 2. Abbreviations.............................................................................1041 Staff ......................................................................................................1044 References. ...
... Definition of Terminology Related to UA ........................1040 Appendix 2. Abbreviations.............................................................................1041 Staff ......................................................................................................1044 References. ...
Atsuyoshi Takao
... letters. In one of them, he said that, rather unexpectedly, he had become the director of the Heart Institute of Japan. Traditionally, the Heart Institute of Japan had been led by either a cardiac surgeon or a cardiologist. He did an excellent job as the director of the institute. He showed well-bal ...
... letters. In one of them, he said that, rather unexpectedly, he had become the director of the Heart Institute of Japan. Traditionally, the Heart Institute of Japan had been led by either a cardiac surgeon or a cardiologist. He did an excellent job as the director of the institute. He showed well-bal ...
Supplementary Material
... and was attached to leads for measuring heart rate (lead II EKG). At this point the participant’s non dominant hand was placed outstretched on a pillow at chest level. A curtain was positioned with the participant on one side and the nurse and the experimenter on the other side, to prevent the parti ...
... and was attached to leads for measuring heart rate (lead II EKG). At this point the participant’s non dominant hand was placed outstretched on a pillow at chest level. A curtain was positioned with the participant on one side and the nurse and the experimenter on the other side, to prevent the parti ...
Relative Dipolar Behavior of the Equivalent T Wave Generator
... rately calibrated amplifiers. By means of a laboratoryoriented computer (PDP 7), the 20 amplified signals were digitized at the rate of 1,000 samples per second per channel for every 3rd heart beat, and stored on magnetic tape. Overall noise levels of these amplifiers was 4 /LIV root mean square (RM ...
... rately calibrated amplifiers. By means of a laboratoryoriented computer (PDP 7), the 20 amplified signals were digitized at the rate of 1,000 samples per second per channel for every 3rd heart beat, and stored on magnetic tape. Overall noise levels of these amplifiers was 4 /LIV root mean square (RM ...
as a PDF
... finding of good reproducibility with each workstation, tested in 11-40 different institutes, is meaningful. Please advise/suggest an alternative version. In addition, although this study was intra-workstation reproducibility, inter-workstation difference would not be significantly large, because the ...
... finding of good reproducibility with each workstation, tested in 11-40 different institutes, is meaningful. Please advise/suggest an alternative version. In addition, although this study was intra-workstation reproducibility, inter-workstation difference would not be significantly large, because the ...
Transvenous Lead Extraction: Heart Rhythm Society Expert
... the purposes of this Consensus Document we defined a consensus as 83% or greater agreement by the authors of this document. When using or considering the guidance given in this document, it is important to remember that there are no absolutes with regard to many clinical situations. The ultimate jud ...
... the purposes of this Consensus Document we defined a consensus as 83% or greater agreement by the authors of this document. When using or considering the guidance given in this document, it is important to remember that there are no absolutes with regard to many clinical situations. The ultimate jud ...
Isolated neonatal rat papillary muscles: a new model to translate
... papillary muscle The cardiac muscle can dynamically change its rate of contraction (Blinks and Koch-Weser 1961; Edman and Johannsson 1976; Lewartowski and Pytkowski 1987; Endoh 2004; Janssen 2010). The force–frequency relationship (FFR) is an important intrinsic regulatory mechanism of cardiac contr ...
... papillary muscle The cardiac muscle can dynamically change its rate of contraction (Blinks and Koch-Weser 1961; Edman and Johannsson 1976; Lewartowski and Pytkowski 1987; Endoh 2004; Janssen 2010). The force–frequency relationship (FFR) is an important intrinsic regulatory mechanism of cardiac contr ...
Indications for Coronary Angiography
... coronary culprit lesions. Several meta-analyses including a Cochrane review (Hoenig et al, 2006; Fox et al, 2010; Mehta et al, 2005) of randomized controlled trials have concluded a routine invasive strategy improved ischaemic endpoints - reducing recurrent ischaemia, rehospitalisation and revascula ...
... coronary culprit lesions. Several meta-analyses including a Cochrane review (Hoenig et al, 2006; Fox et al, 2010; Mehta et al, 2005) of randomized controlled trials have concluded a routine invasive strategy improved ischaemic endpoints - reducing recurrent ischaemia, rehospitalisation and revascula ...
The Application of the Bio-Material PLA in Biodegradable Coronary
... by Dr. Jacques Puel in France [3]. Coronary stents are a technology developed to keep collapsing heart vessels open to promote proper blood flow and prevent further cardiovascular complications. Dr. Ulrich Sigwart is credited with the realization of endoluminal stenting, which is stenting within org ...
... by Dr. Jacques Puel in France [3]. Coronary stents are a technology developed to keep collapsing heart vessels open to promote proper blood flow and prevent further cardiovascular complications. Dr. Ulrich Sigwart is credited with the realization of endoluminal stenting, which is stenting within org ...
Recent Advances in Hypertension
... result in an independent reduction of ≈4 to 10 mm Hg in systolic and 3 to 8 mm Hg in diastolic BP for individuals with stage 1 hypertension regardless of age or sex.1,3,31–33 Relatively little is known on the effects of exercise in individuals with stage 2 hypertension or those with resistant hypert ...
... result in an independent reduction of ≈4 to 10 mm Hg in systolic and 3 to 8 mm Hg in diastolic BP for individuals with stage 1 hypertension regardless of age or sex.1,3,31–33 Relatively little is known on the effects of exercise in individuals with stage 2 hypertension or those with resistant hypert ...
Patent Foramen Ovale (PFO) and Migraine
... In many individuals (as many as 25% or more), however, the foramen ovale may persist unclosed (patent) into adulthood. A number of studies have suggested that individuals with migraine are more likely to have a patent foreman ovale (PFO), and this association is most evident in those whose attacks o ...
... In many individuals (as many as 25% or more), however, the foramen ovale may persist unclosed (patent) into adulthood. A number of studies have suggested that individuals with migraine are more likely to have a patent foreman ovale (PFO), and this association is most evident in those whose attacks o ...
the application of the bio-material pla in
... by Dr. Jacques Puel in France [3]. Coronary stents are a technology developed to keep collapsing heart vessels open to promote proper blood flow and prevent further cardiovascular complications. Dr. Ulrich Sigwart is credited with the realization of endoluminal stenting, which is stenting within org ...
... by Dr. Jacques Puel in France [3]. Coronary stents are a technology developed to keep collapsing heart vessels open to promote proper blood flow and prevent further cardiovascular complications. Dr. Ulrich Sigwart is credited with the realization of endoluminal stenting, which is stenting within org ...
Preview the material
... The frequency of long QT syndrome is unknown (possibly about 1 per 5000 population). The condition is present in all races and ethnic groups, although frequency may differ among these populations. However, population-based prevalence studies are not available on this disease at the current time. Lon ...
... The frequency of long QT syndrome is unknown (possibly about 1 per 5000 population). The condition is present in all races and ethnic groups, although frequency may differ among these populations. However, population-based prevalence studies are not available on this disease at the current time. Lon ...
Deciphering the Sinus Tachycardias
... and effort are expended in investigating and eliminating secondary causes, the primary entity remains clinically perplexing. In the animal kingdom, a fascinating inverse relationship exists between heart rate and life expectancy.1 In humans, a substantial and indisputable body of epidemiologic data ...
... and effort are expended in investigating and eliminating secondary causes, the primary entity remains clinically perplexing. In the animal kingdom, a fascinating inverse relationship exists between heart rate and life expectancy.1 In humans, a substantial and indisputable body of epidemiologic data ...
The Effect of Different Roller Coasters on Human Heart Recovery
... is the throbbing of the arteries produced by the contractions of the ventricles caused by the successive contractions of the heart. A more precise method of determining pulse involves the use of an electrocardiograph, or ECG. Continuous electrocardiograph monitoring of the heart is frequently done i ...
... is the throbbing of the arteries produced by the contractions of the ventricles caused by the successive contractions of the heart. A more precise method of determining pulse involves the use of an electrocardiograph, or ECG. Continuous electrocardiograph monitoring of the heart is frequently done i ...