The Relation of Cardiac Effort to Myocardial Oxygen Consumption
... humoral regulation hi the study of organ metabolism has made it mandatory that the findings obtained in the isolated heart be extended in a more nearly intact preparation. Our attempts toward this end led to the development of an acute, open-chested dog preparation4 that permits the measurement of t ...
... humoral regulation hi the study of organ metabolism has made it mandatory that the findings obtained in the isolated heart be extended in a more nearly intact preparation. Our attempts toward this end led to the development of an acute, open-chested dog preparation4 that permits the measurement of t ...
Print - Circulation
... Many echocardiographic technics for the diagnosis of congenital heart disease have recently been described. Most of these technics obviously need further substantiation; however, the size of the list is impressive and makes one feel that even the more complicated forms of congenital heart disease ma ...
... Many echocardiographic technics for the diagnosis of congenital heart disease have recently been described. Most of these technics obviously need further substantiation; however, the size of the list is impressive and makes one feel that even the more complicated forms of congenital heart disease ma ...
Slide 1
... which the two most common forms are dilatation of the cavities, associated with pulmonary and hepatic disease; and again, the fatty degeneration. It is remarkable, that although the beneficial action of mercury in the affection is known to may practical physicians, but little practical information c ...
... which the two most common forms are dilatation of the cavities, associated with pulmonary and hepatic disease; and again, the fatty degeneration. It is remarkable, that although the beneficial action of mercury in the affection is known to may practical physicians, but little practical information c ...
Diagnostic accuracy of myocardial deformation indices for detecting
... Abstract: Background: The prediction of coronary artery disease (CAD) by conventional echocardiographic measurements is principally based on the estimation of ejection fraction and regional wall motion abnormality (RWMA). This study aimed to determine whether strain echocardiography of left ventricl ...
... Abstract: Background: The prediction of coronary artery disease (CAD) by conventional echocardiographic measurements is principally based on the estimation of ejection fraction and regional wall motion abnormality (RWMA). This study aimed to determine whether strain echocardiography of left ventricl ...
Single-site ventricular and biventricular pacing
... LV-epi and RVA-BiV) caused by increased external work relative to normal myocardium. ...
... LV-epi and RVA-BiV) caused by increased external work relative to normal myocardium. ...
as a PDF
... LV-epi and RVA-BiV) caused by increased external work relative to normal myocardium. ...
... LV-epi and RVA-BiV) caused by increased external work relative to normal myocardium. ...
Mannequin - CHFpatients.com
... resulting ventricle is too small, too large or the correct size. Making the ventricle too small is the worst scenario, because it will lead to immediate pulmonary hypertension (Dor, Seminars in Thoracic and Cardiovascular Surgery, Vol. 13, #3, Oct 2001). Making the ventricle too large leaves the pat ...
... resulting ventricle is too small, too large or the correct size. Making the ventricle too small is the worst scenario, because it will lead to immediate pulmonary hypertension (Dor, Seminars in Thoracic and Cardiovascular Surgery, Vol. 13, #3, Oct 2001). Making the ventricle too large leaves the pat ...
Dextrocardia with Situs Inversus, Atrio
... instead of the left [1-4]. This differs from dextro position where the heart is positioned in the right side of the chest secondary to a pathologic process, but retains the normal axis [4]. Dextrocardia may occur as an isolated defect or may be associated with cardiac, vascular and/or visceral abnor ...
... instead of the left [1-4]. This differs from dextro position where the heart is positioned in the right side of the chest secondary to a pathologic process, but retains the normal axis [4]. Dextrocardia may occur as an isolated defect or may be associated with cardiac, vascular and/or visceral abnor ...
Primary Percutaneous Coronary Intervention in an Acute Myocardial
... angioplasty on non-culprit lesions in the setting of primary PCI. Nevertheless, multi-vessel angioplasty (including non-culprit lesions) may be reserved for patients suffering an acute MI when complicated by cardiogenic shock within 36 hours of pain onset (class I recommendation, level of evidence C ...
... angioplasty on non-culprit lesions in the setting of primary PCI. Nevertheless, multi-vessel angioplasty (including non-culprit lesions) may be reserved for patients suffering an acute MI when complicated by cardiogenic shock within 36 hours of pain onset (class I recommendation, level of evidence C ...
Evaluation of arrhythmias in the late hospital phase - Heart
... 13.7 per cent (7) described palpitations, while clinical evaluation by the primary house staff physician had detected cardiac ectopy in only 5 cases (9.8%). Further, arrhythmias were detected in only I I.8 per cent (6 patients) by standard electrocardiogram and in I5.7 per cent (8 patients) by cardi ...
... 13.7 per cent (7) described palpitations, while clinical evaluation by the primary house staff physician had detected cardiac ectopy in only 5 cases (9.8%). Further, arrhythmias were detected in only I I.8 per cent (6 patients) by standard electrocardiogram and in I5.7 per cent (8 patients) by cardi ...
Wall Thickness and Diastolic Properties of the Left Ventricle
... independent of the presence or absence of increased left ventricular mass. Certain limitations of this study must be emphasized. First, wall thickness was not determined directly (e.g., at surgery or autopsy) in our patients, but rather by an indirect ultrasonic technique. We have relied upon the wo ...
... independent of the presence or absence of increased left ventricular mass. Certain limitations of this study must be emphasized. First, wall thickness was not determined directly (e.g., at surgery or autopsy) in our patients, but rather by an indirect ultrasonic technique. We have relied upon the wo ...
CPR Course
... • In SCA, ventricular tachycardia or ventricular fibrillation causes the heart to beat too fast. ● Ventricular tachycardia (VT), a dangerously fast rhythm in the lower two chambers of the heart. ● Ventricular fibrillation (VF), a rapid and chaotic quivering of the ventricles, which can be triggered ...
... • In SCA, ventricular tachycardia or ventricular fibrillation causes the heart to beat too fast. ● Ventricular tachycardia (VT), a dangerously fast rhythm in the lower two chambers of the heart. ● Ventricular fibrillation (VF), a rapid and chaotic quivering of the ventricles, which can be triggered ...
Influence of ejection fraction on outcomes and efficacy of
... ejection fraction categories were older, more likely to be female, less likely to have a history of myocardial infarction, and more likely to have a history of hypertension and diabetes. Both heart rate and BMI were slightly higher in those with higher ejection fraction. NYHA functional class did no ...
... ejection fraction categories were older, more likely to be female, less likely to have a history of myocardial infarction, and more likely to have a history of hypertension and diabetes. Both heart rate and BMI were slightly higher in those with higher ejection fraction. NYHA functional class did no ...
n-3 (omega-3) polyunsaturated fatty acids prevent acute atrial
... treatment during normal sinus rhythm, we suggest that effects through one of these alternative pathways may have contributed to the attenuation in atrial electrophysiological remodeling observed in our study. An n-6 PUFA treatment containing soybean and safflower oils as the fat source was used to c ...
... treatment during normal sinus rhythm, we suggest that effects through one of these alternative pathways may have contributed to the attenuation in atrial electrophysiological remodeling observed in our study. An n-6 PUFA treatment containing soybean and safflower oils as the fat source was used to c ...
infarct size
... Cardiology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia. Accepted for publication 28 April 1986 ...
... Cardiology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia. Accepted for publication 28 April 1986 ...
CPR Course
... • In SCA, ventricular tachycardia or ventricular fibrillation causes the heart to beat too fast. ● Ventricular tachycardia (VT), a dangerously fast rhythm in the lower two chambers of the heart. ● Ventricular fibrillation (VF), a rapid and chaotic quivering of the ventricles, which can be triggered ...
... • In SCA, ventricular tachycardia or ventricular fibrillation causes the heart to beat too fast. ● Ventricular tachycardia (VT), a dangerously fast rhythm in the lower two chambers of the heart. ● Ventricular fibrillation (VF), a rapid and chaotic quivering of the ventricles, which can be triggered ...
Syncope - Royal College of Emergency Medicine
... This group should be further evaluated in the ED on a monitored bed. IP referral is suggested by P<50 at any time, PR bleed, Hb<10 gm/d, chest pain, ECG showing new Q wave in any lead but III, SpO2 < 94% air, new dyspnoea, age > 65 (with no clear diagnosis and no prodrome) and any patient in whom si ...
... This group should be further evaluated in the ED on a monitored bed. IP referral is suggested by P<50 at any time, PR bleed, Hb<10 gm/d, chest pain, ECG showing new Q wave in any lead but III, SpO2 < 94% air, new dyspnoea, age > 65 (with no clear diagnosis and no prodrome) and any patient in whom si ...
Comparative histological structure of the sinus node in mammals
... human (2), dog (9), horse (7), and camel (11) is the characteristic presence of a centrally located artery. In fact, the entire node appears to be organized about its central artery, a feature that prompted Söderström (22) aptly to describe the node of man as resembling an enormous adventitia of its ...
... human (2), dog (9), horse (7), and camel (11) is the characteristic presence of a centrally located artery. In fact, the entire node appears to be organized about its central artery, a feature that prompted Söderström (22) aptly to describe the node of man as resembling an enormous adventitia of its ...
Outline for OHP CPR Macerato
... 5. CPR is mainly used on someone who is having a heart attack, serious injuring, almost drowning or drug overdose. (Cardiopulmonary Resuscitation CPR). 6. CPR is important in saving lives because after four to six minutes without the flow of oxygen blood, brain cells begin to die, then after 10 minu ...
... 5. CPR is mainly used on someone who is having a heart attack, serious injuring, almost drowning or drug overdose. (Cardiopulmonary Resuscitation CPR). 6. CPR is important in saving lives because after four to six minutes without the flow of oxygen blood, brain cells begin to die, then after 10 minu ...
Print - Circulation Research
... axis of ventricular cells. This form of reentry was demonstrated in hearts with infarcted left ventricles caused by a coronary occlusion. After a healing period, the infarction resulted in a two-dimensional thin layer of surviving tissue that sustained reentry loops through pathways of fast and slow ...
... axis of ventricular cells. This form of reentry was demonstrated in hearts with infarcted left ventricles caused by a coronary occlusion. After a healing period, the infarction resulted in a two-dimensional thin layer of surviving tissue that sustained reentry loops through pathways of fast and slow ...
Acute Mitral Regurgitation: Another Great Masquerader?
... did not improve. Given the new murmur on exam, a TTE was obtained and showed no wall motion abnormalities, hyperdynamic LV with EF 80%, MV prolapse of the anterior leaflet without regurgitation, grade 2 diastolic dysfunction, normal RV size and function, and PASP of 40 mmHg. A follow-up TEE show ...
... did not improve. Given the new murmur on exam, a TTE was obtained and showed no wall motion abnormalities, hyperdynamic LV with EF 80%, MV prolapse of the anterior leaflet without regurgitation, grade 2 diastolic dysfunction, normal RV size and function, and PASP of 40 mmHg. A follow-up TEE show ...
Trying to succeed when the right ventricle fails
... the guiding principles for assessing and managing RV dysfunction have been extrapolated from studies of the left ventricle (LV) [1–3]. However, further insight into the fundamental anatomical and functional differences between the two ventricles as well as their physiologic interdependence highlight ...
... the guiding principles for assessing and managing RV dysfunction have been extrapolated from studies of the left ventricle (LV) [1–3]. However, further insight into the fundamental anatomical and functional differences between the two ventricles as well as their physiologic interdependence highlight ...
Jugular Venous Pulse: Window into the Right Heart
... Fig. 2 Illustration of technique for measurement of central venous pressure. For angles up to 30°, 5 cm should be added to the distance measured between the angle of Louis and the highest venous pulsation. For angles greater than 30°, 10 cm should be added to this distance. ...
... Fig. 2 Illustration of technique for measurement of central venous pressure. For angles up to 30°, 5 cm should be added to the distance measured between the angle of Louis and the highest venous pulsation. For angles greater than 30°, 10 cm should be added to this distance. ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.