Indices of Myocardial Contractility
... independent of fiber length but increases at least 50% for a 25% increase of fiber length. Therefore, it is unlike that of the muscle fibers. His work indicated that Vmax is invalid for estimating cardiac inotrope since a shift of Vmax can be attributable to either changing contractility or changing ...
... independent of fiber length but increases at least 50% for a 25% increase of fiber length. Therefore, it is unlike that of the muscle fibers. His work indicated that Vmax is invalid for estimating cardiac inotrope since a shift of Vmax can be attributable to either changing contractility or changing ...
ECG Rhythm Study Guide
... P Wave ‐ Replaced with multiple F (flutter) waves, usually at a ratio of 2:1 (2F ‐ 1QRS) but sometimes 3:1 P Wave rate ‐ 300 beats per minute P‐R Interval ‐ Not measurable As with SVT the abnormal tissue generating the rapid heart rate is also in the atria, however, the atrioventricular node is not ...
... P Wave ‐ Replaced with multiple F (flutter) waves, usually at a ratio of 2:1 (2F ‐ 1QRS) but sometimes 3:1 P Wave rate ‐ 300 beats per minute P‐R Interval ‐ Not measurable As with SVT the abnormal tissue generating the rapid heart rate is also in the atria, however, the atrioventricular node is not ...
Is It Reasonable to Treat All Calcified Stenotic Aortic Valves
... removed in the latter. Preservation of the native valve during the endovascular procedure may be responsible, per se, for complications such as coronary obstruction or perivalvular leakage (2– 4). Recourse to percutaneous AVI is expected to increase in the future. However, the actual clinical experi ...
... removed in the latter. Preservation of the native valve during the endovascular procedure may be responsible, per se, for complications such as coronary obstruction or perivalvular leakage (2– 4). Recourse to percutaneous AVI is expected to increase in the future. However, the actual clinical experi ...
Phytotherapy for Angina
... angina and is now considered to be rare.4 Unstable angina describes a spectrum of ischemic events somewhere between stable angina and myocardial infarction (heart attack). An estimated 5% of unstable angina patients die within the first few months of diagnosis.5 In my experience, the role of phytoth ...
... angina and is now considered to be rare.4 Unstable angina describes a spectrum of ischemic events somewhere between stable angina and myocardial infarction (heart attack). An estimated 5% of unstable angina patients die within the first few months of diagnosis.5 In my experience, the role of phytoth ...
Cardiopulmonary Physiology
... At low end-diastolic volume there is little stretch on the myofibers and they do not pull in the same direction. At higher end-diastolic volume the ventricular walls are stretched causing the branched fibers to be closer to parallel. During contraction, these fibers shorten in the same general direc ...
... At low end-diastolic volume there is little stretch on the myofibers and they do not pull in the same direction. At higher end-diastolic volume the ventricular walls are stretched causing the branched fibers to be closer to parallel. During contraction, these fibers shorten in the same general direc ...
renal function
... • No strong evidence demonstrating superiority of surgical revascularization over medical therapy • No strong evidence demonstrating superiority of renal angioplasty/stenting over medical therapy • Uncontrolled, non-randomized data supports the use of renal revascularization in high-risk groups ...
... • No strong evidence demonstrating superiority of surgical revascularization over medical therapy • No strong evidence demonstrating superiority of renal angioplasty/stenting over medical therapy • Uncontrolled, non-randomized data supports the use of renal revascularization in high-risk groups ...
Response of heart murmur intensity to isometric - Heart
... handgrip strength. Blood pressure was measured in the non-exercising arm during rest and exercise using a standard blood pressure cuff (I 13 cm x I3-5 cm). All patients were instructed to breathe normally to avoid performing the Valsalva manoeuvre. Fig. i illustrates the dynamometer and isometric ha ...
... handgrip strength. Blood pressure was measured in the non-exercising arm during rest and exercise using a standard blood pressure cuff (I 13 cm x I3-5 cm). All patients were instructed to breathe normally to avoid performing the Valsalva manoeuvre. Fig. i illustrates the dynamometer and isometric ha ...
Transfer of Knowledge in the early History of Paediatric Cardiology
... 1.A pioneer contributes to the early history of paediatric cardiology (1950-1990) in Germany and sheds some lights on the transfer of knowledge from USA – United Kingdom (UK) – Germany (especially W-Germany). Gerald Graham, born in Germany, emigrated to the USA in 1940 via London (1937-1940). He rec ...
... 1.A pioneer contributes to the early history of paediatric cardiology (1950-1990) in Germany and sheds some lights on the transfer of knowledge from USA – United Kingdom (UK) – Germany (especially W-Germany). Gerald Graham, born in Germany, emigrated to the USA in 1940 via London (1937-1940). He rec ...
Chapter_014 heart lectureRich
... (third heart sound). Ventricles dilate, an energy-requiring effort that draws blood into the ventricles as the atria contract, thereby moving blood from the atria to the ventricles. Atria contract as ventricles almost filled. Causes complete emptying of atria (fourth heart sound). Copyright © 2015 b ...
... (third heart sound). Ventricles dilate, an energy-requiring effort that draws blood into the ventricles as the atria contract, thereby moving blood from the atria to the ventricles. Atria contract as ventricles almost filled. Causes complete emptying of atria (fourth heart sound). Copyright © 2015 b ...
Nitroglycerin increases venous return but reduces CVP: a preload
... better the filling of the left heart, the better cardiac output. About one hundred years ago, Frank and Starling enunciated their “law of the heart”: the idea that the more the left ventricle is filled in diastole, the greater the stroke volume of the following systole. Control of the blood volume s ...
... better the filling of the left heart, the better cardiac output. About one hundred years ago, Frank and Starling enunciated their “law of the heart”: the idea that the more the left ventricle is filled in diastole, the greater the stroke volume of the following systole. Control of the blood volume s ...
Thoracic Radiology
... Other causes of fluid in the pleural cavity are chyle, blood and transudates associated with systemic disorders such as cardiac or hepatic disease. Differentiation of these fluids is not possible using radiography alone. Pneumothorax Pneumothorax is a common complication of road traffic accidents.It ...
... Other causes of fluid in the pleural cavity are chyle, blood and transudates associated with systemic disorders such as cardiac or hepatic disease. Differentiation of these fluids is not possible using radiography alone. Pneumothorax Pneumothorax is a common complication of road traffic accidents.It ...
Biosc_48_Chapter_14_lecture
... 3. Veins are capacitance vessels – 2/3 of the total blood volume is in veins ...
... 3. Veins are capacitance vessels – 2/3 of the total blood volume is in veins ...
9 Circulation1
... • Left ventricle pumps out blood; pressure rises to a maximum of ~120 mm Hg Diastolic blood pressure: • Left ventricle fills with blood; pressure falls to a minimum of ~80 mm Hg -Average blood pressure is 120/80 -healthier values may be lower, however it is possible to have blood pressure too low ...
... • Left ventricle pumps out blood; pressure rises to a maximum of ~120 mm Hg Diastolic blood pressure: • Left ventricle fills with blood; pressure falls to a minimum of ~80 mm Hg -Average blood pressure is 120/80 -healthier values may be lower, however it is possible to have blood pressure too low ...
ECG INTRODUCTION (Lecture 1)
... In leads with an “overall” positive QRS complex that is the positive deflection is larger than the negative deflection, the T wave also tends to be positive above the isoelectric line, while in leads with an overall negative QRS complex the T waves tend also to be negative, inverted below the isoele ...
... In leads with an “overall” positive QRS complex that is the positive deflection is larger than the negative deflection, the T wave also tends to be positive above the isoelectric line, while in leads with an overall negative QRS complex the T waves tend also to be negative, inverted below the isoele ...
Chronic stable coronary artery disease: drugs vs. revascularization REVIEW Controversies in Cardiovascular Medicine
... Immediate relief of angina can be provided by nitroglycerine, isosorbide mononitrate, or chewing a nifedipine capsule. Patients may also be instructed to use these short acting drugs prior to exercise, in order to reduce the likelihood of subsequent angina. In symptomatic patients the frequency of e ...
... Immediate relief of angina can be provided by nitroglycerine, isosorbide mononitrate, or chewing a nifedipine capsule. Patients may also be instructed to use these short acting drugs prior to exercise, in order to reduce the likelihood of subsequent angina. In symptomatic patients the frequency of e ...
BASIC ECG INTERPRETATION
... However signifigant Q-waves in lead III alone are NOT diagnostic of an infarction, even they are otherwise “significant” in size and width. Therefore signifigant Q-waves in lead III are ignored unless other abnormalities are seen. ...
... However signifigant Q-waves in lead III alone are NOT diagnostic of an infarction, even they are otherwise “significant” in size and width. Therefore signifigant Q-waves in lead III are ignored unless other abnormalities are seen. ...
Winter `14 LeBonHeartNL9.5x15.indd
... stent and change in length, thickness and diameter. They also calculated the hoop stress, Tresca Yield Point force when stent fractured, ratio of change in length to change in diameter and Youden’s index to determine optimal cut points for unzipping. As a next step, the investigators have begun test ...
... stent and change in length, thickness and diameter. They also calculated the hoop stress, Tresca Yield Point force when stent fractured, ratio of change in length to change in diameter and Youden’s index to determine optimal cut points for unzipping. As a next step, the investigators have begun test ...
QUIZ # 1 - Cognella Titles Store
... is happening within the heart. Again, even though it is not the intent of this book, common interventions/ medications will also be mentioned with each dysrhythmia. However, the reader should understand that this is not a comprehensive listing of all interventions and medications. The purpose of thi ...
... is happening within the heart. Again, even though it is not the intent of this book, common interventions/ medications will also be mentioned with each dysrhythmia. However, the reader should understand that this is not a comprehensive listing of all interventions and medications. The purpose of thi ...
ICD (implantable Cardioverter"Defibrillator)
... A heart disease, which you might have had for a long time, and which is already being treated by a heart specialist (cardiologist), has led to the recommendation for an Implantable Cardioverter-Defibrillator (ICD) surgery for you. This device can prevent sudden cardiac death and save your life. You ...
... A heart disease, which you might have had for a long time, and which is already being treated by a heart specialist (cardiologist), has led to the recommendation for an Implantable Cardioverter-Defibrillator (ICD) surgery for you. This device can prevent sudden cardiac death and save your life. You ...
The normal ranges of cardiovascular parameters measured using
... ranges obtained with that method. It is likely that different methods will produce consistent over- or underestimation of values in comparison with each other, a systematic bias. This does not preclude their scientific and clinical utility, provided that the normal ranges are known for that specific ...
... ranges obtained with that method. It is likely that different methods will produce consistent over- or underestimation of values in comparison with each other, a systematic bias. This does not preclude their scientific and clinical utility, provided that the normal ranges are known for that specific ...
French Society of Cardiology guidelines for cardiac rehabilitation in
... Exercise stress test Exercise stress tests must fulfil the protocols and safety criteria for cardiological stress tests [21,25,26]. These tests are often performed under medical treatment. The initial test must be: maximal if possible or limited by the symptoms; in some cases limited by a maximal hea ...
... Exercise stress test Exercise stress tests must fulfil the protocols and safety criteria for cardiological stress tests [21,25,26]. These tests are often performed under medical treatment. The initial test must be: maximal if possible or limited by the symptoms; in some cases limited by a maximal hea ...
THE TOTAL CAVOPULMONARY CONNECTION RESISTANCE: A
... and compliance component mimicking the arterial and venous vessels in the cardiovascular system. As explained previously, SVR and PVR values were obtained from clinical cardiac catheterization data. Systemic and pulmonary compliance reflect typical Fontan values and are outlined in Table 227, 34, 37 ...
... and compliance component mimicking the arterial and venous vessels in the cardiovascular system. As explained previously, SVR and PVR values were obtained from clinical cardiac catheterization data. Systemic and pulmonary compliance reflect typical Fontan values and are outlined in Table 227, 34, 37 ...
PRACE ORYGINALNE ORIGINAL PAPERS
... and xylazine (5 mg/kg body weight, i.p.), and left thoracotomy was performed. The heart was externalized and a suture (5-0 silk) was placed around the proximal left coronary artery and tightly tied. The heart was internalized, the chest was closed, and pneumothorax was reduced. The sham operated rat ...
... and xylazine (5 mg/kg body weight, i.p.), and left thoracotomy was performed. The heart was externalized and a suture (5-0 silk) was placed around the proximal left coronary artery and tightly tied. The heart was internalized, the chest was closed, and pneumothorax was reduced. The sham operated rat ...
Echocardiography use in the diagnosis and management of cardiac
... The latter category refers to cryptogenic strokes, but is also chosen if two or more causes of stroke can be identified in the same patient, or—even more questionably—if the patient has a negative or incomplete evaluation. Categories 2 and 5 are of particular interest for echocardiography. Echocardi ...
... The latter category refers to cryptogenic strokes, but is also chosen if two or more causes of stroke can be identified in the same patient, or—even more questionably—if the patient has a negative or incomplete evaluation. Categories 2 and 5 are of particular interest for echocardiography. Echocardi ...
Does Ischemia Burden in Stable Coronary Artery Disease Effectively
... nearly 500 acute coronary syndrome events over an average 2-year follow-up. The authors plotted the hazard ratio for cardiac death against the percentage total ischemic myocardium separately for patients who were selected for revascularization within 60 days of stress testing and patients who were t ...
... nearly 500 acute coronary syndrome events over an average 2-year follow-up. The authors plotted the hazard ratio for cardiac death against the percentage total ischemic myocardium separately for patients who were selected for revascularization within 60 days of stress testing and patients who were t ...