Hemodynamic Consequences of the Injection of Radiopaque Material
... A typical record of left atrial pr-essure prior to and after the injection of radiopaque material into the left atritum of a patient with mitral stenosis is shown iu figure 1. The left atrial mean pressuire ofteui increased by 100 per cent or more. The increase began Within 30 seconds after the inje ...
... A typical record of left atrial pr-essure prior to and after the injection of radiopaque material into the left atritum of a patient with mitral stenosis is shown iu figure 1. The left atrial mean pressuire ofteui increased by 100 per cent or more. The increase began Within 30 seconds after the inje ...
Treatment Or Cure Of Right Ventricular Outflow Tract
... (53%) underwent catheter ablation, and the procedure was found to be successful in 82%. From the 58 patients with a successful ablation, 30 (52%) had recurrences within 6.2 years on average.14 It is worthwhile mentioning that from the 30 patients who received antiarrhythmic drugs, only 8 were still ...
... (53%) underwent catheter ablation, and the procedure was found to be successful in 82%. From the 58 patients with a successful ablation, 30 (52%) had recurrences within 6.2 years on average.14 It is worthwhile mentioning that from the 30 patients who received antiarrhythmic drugs, only 8 were still ...
the relative importance of nervous, humoral and intrinsic
... of 0-2 mg kg"1 of atropine sulphate (Sigma) was tested. The abilities of each of the cardiac vagi to elicite a bradycardia was investigated at stimulus intensities which produced a maximal effect. It was not practical to use such a procedure during the experiments involving the simultaneous stimulat ...
... of 0-2 mg kg"1 of atropine sulphate (Sigma) was tested. The abilities of each of the cardiac vagi to elicite a bradycardia was investigated at stimulus intensities which produced a maximal effect. It was not practical to use such a procedure during the experiments involving the simultaneous stimulat ...
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... growth and limitations of resection inside the heart. Complete resection is seldom possible. In most of the cases, the histopathological diagnosis can be provided after surgery. ...
... growth and limitations of resection inside the heart. Complete resection is seldom possible. In most of the cases, the histopathological diagnosis can be provided after surgery. ...
Hereditary Occurrence of the Pre-Excitation
... long limb leads of the same patient. This tracing is especially interesting for 3 reasons: fusion beats of unusual type in pre-exeitation, concealed conduction in forward direction, and concealed retrograde conduction over an anomalous accessory A-V bypass following a ventricular capture. Again the ...
... long limb leads of the same patient. This tracing is especially interesting for 3 reasons: fusion beats of unusual type in pre-exeitation, concealed conduction in forward direction, and concealed retrograde conduction over an anomalous accessory A-V bypass following a ventricular capture. Again the ...
EFFECTS OF OXYGEN BREATHING ON THE HEART RATE
... (Submitted for publication July 13, 1961; accepted August 31, 1961) ...
... (Submitted for publication July 13, 1961; accepted August 31, 1961) ...
Diastolic Heart Failure - Ether
... (Fig. 3) are extremely sensitive to loading conditions, particularly to left atrial pressure. Other noninvasive approaches to assessing diastolic function include Doppler assessment of flow into the left atrium through the pulmonary veins, and tissue Doppler imaging, which allows for direct measurem ...
... (Fig. 3) are extremely sensitive to loading conditions, particularly to left atrial pressure. Other noninvasive approaches to assessing diastolic function include Doppler assessment of flow into the left atrium through the pulmonary veins, and tissue Doppler imaging, which allows for direct measurem ...
Diastolic Heart Failure - Texas Tech University Health Sciences Center
... (Fig. 3) are extremely sensitive to loading conditions, particularly to left atrial pressure. Other noninvasive approaches to assessing diastolic function include Doppler assessment of flow into the left atrium through the pulmonary veins, and tissue Doppler imaging, which allows for direct measurem ...
... (Fig. 3) are extremely sensitive to loading conditions, particularly to left atrial pressure. Other noninvasive approaches to assessing diastolic function include Doppler assessment of flow into the left atrium through the pulmonary veins, and tissue Doppler imaging, which allows for direct measurem ...
A case of isolated ventricular septal rupture caused by
... The mechanism of injury in the case described here could be explained by a forceful impact that resulted in an extreme change in intrathoracic pressure, heart compression, and excessive intraventricular pressure. The tension rupture and elongation of chordaes were the evidences of the sharply increa ...
... The mechanism of injury in the case described here could be explained by a forceful impact that resulted in an extreme change in intrathoracic pressure, heart compression, and excessive intraventricular pressure. The tension rupture and elongation of chordaes were the evidences of the sharply increa ...
A randomized controlled trial of acupuncture in stable ischemic heart
... for 12 weeks. All TA and SA subjects had their eyes covered with eye shades from the beginning of each session, so that they will not be able to view the treatment procedure. Following skin site cleansing with alcohol, disposable acupuncture needles (1–1.5 in. sterilized stainless steel) were insert ...
... for 12 weeks. All TA and SA subjects had their eyes covered with eye shades from the beginning of each session, so that they will not be able to view the treatment procedure. Following skin site cleansing with alcohol, disposable acupuncture needles (1–1.5 in. sterilized stainless steel) were insert ...
Eplerenone Reduces Mortality 30 Days After Randomization
... ⫽ procollagen type III amino-terminal peptide ...
... ⫽ procollagen type III amino-terminal peptide ...
Heart WaLL, cHambers, and VaLVes
... Of all organs, the heart has a unique ability—automaticity. The heart can contract by itself, independent of any signals or stimulation from the body. The heart contracts in response to an electrical current conveyed by a conduction system (Fig. 19-8). Specialized cells in the sinoatrial (SA) node n ...
... Of all organs, the heart has a unique ability—automaticity. The heart can contract by itself, independent of any signals or stimulation from the body. The heart contracts in response to an electrical current conveyed by a conduction system (Fig. 19-8). Specialized cells in the sinoatrial (SA) node n ...
Prognostic Value of Global Myocardial Performance Indices in Acute
... Downloaded From: http://publications.chestnet.org/pdfaccess.ashx?url=/data/journals/chest/22000/ on 05/07/2017 ...
... Downloaded From: http://publications.chestnet.org/pdfaccess.ashx?url=/data/journals/chest/22000/ on 05/07/2017 ...
Positive jugular pulse
... a transitory feature; it also occurs with atrial and ventricular extrasystoles (produced when impulses capable of stimulating myocardial contraction originate at points apart from the sinoauricular node) caused by focal myocarditis, also in digitalis and chloroform intoxication and sometimes in spac ...
... a transitory feature; it also occurs with atrial and ventricular extrasystoles (produced when impulses capable of stimulating myocardial contraction originate at points apart from the sinoauricular node) caused by focal myocarditis, also in digitalis and chloroform intoxication and sometimes in spac ...
Acute Ventricular Rate Control in Atrial Fibrillation
... 145 ⫾ 17 bpm; p ⫽ 0.50). All the patients had achieved successful ventricular rate control at 12 h. The ventricular rates were comparable in both treatment arms throughout the study period (Fig 1). The time taken to achieve successful rate control was shorter in the combination-treatment arm (15 ⫾ ...
... 145 ⫾ 17 bpm; p ⫽ 0.50). All the patients had achieved successful ventricular rate control at 12 h. The ventricular rates were comparable in both treatment arms throughout the study period (Fig 1). The time taken to achieve successful rate control was shorter in the combination-treatment arm (15 ⫾ ...
Cardiac Physiology
... spontaneously generate action potentials? They have an unstable membrane potentials called pacemaker potentials Their membrane gradually depolarizes and drifts towards threshold due to slow Na+ entry When threshold is reached they fire an action potential Calcium influx (rather than sodi ...
... spontaneously generate action potentials? They have an unstable membrane potentials called pacemaker potentials Their membrane gradually depolarizes and drifts towards threshold due to slow Na+ entry When threshold is reached they fire an action potential Calcium influx (rather than sodi ...
Acute Ventricular Rate Control in Atrial Fibrillation
... 145 ⫾ 17 bpm; p ⫽ 0.50). All the patients had achieved successful ventricular rate control at 12 h. The ventricular rates were comparable in both treatment arms throughout the study period (Fig 1). The time taken to achieve successful rate control was shorter in the combination-treatment arm (15 ⫾ ...
... 145 ⫾ 17 bpm; p ⫽ 0.50). All the patients had achieved successful ventricular rate control at 12 h. The ventricular rates were comparable in both treatment arms throughout the study period (Fig 1). The time taken to achieve successful rate control was shorter in the combination-treatment arm (15 ⫾ ...
Trisomy 13 Facts
... Trisomy 13 syndrome will have a full trisomy (affecting all cells) while the remainder will have a trisomy due to a rearrangement of cells called a translocation (an attachment of all or part of one chromosome to another chromosome) or have mosaicism (two different cell lines in an individual such a ...
... Trisomy 13 syndrome will have a full trisomy (affecting all cells) while the remainder will have a trisomy due to a rearrangement of cells called a translocation (an attachment of all or part of one chromosome to another chromosome) or have mosaicism (two different cell lines in an individual such a ...
Heart failure highlights in 20122013
... The incidence of diabetes is increasing, and diabetes is a common precursor of HF.38 Indeed, HF that occurs in diabetic patients is considered to result from a unique diabetes-related mechanism, which is often referred to as ‘diabetic cardiomyopathy’. Several mechanisms have been attributed as under ...
... The incidence of diabetes is increasing, and diabetes is a common precursor of HF.38 Indeed, HF that occurs in diabetic patients is considered to result from a unique diabetes-related mechanism, which is often referred to as ‘diabetic cardiomyopathy’. Several mechanisms have been attributed as under ...
Role of atrioventricular nodal ablation and pacemaker therapy in
... Radiofrequency ablation of the AV node combined with permanent right ventricular (RV) endocardial pacing is a highly effective treatment for controlling the ventricular response of AF. AV nodal ablation is achieved by inserting a steerable ablation catheter via the right or left femoral vein. The ti ...
... Radiofrequency ablation of the AV node combined with permanent right ventricular (RV) endocardial pacing is a highly effective treatment for controlling the ventricular response of AF. AV nodal ablation is achieved by inserting a steerable ablation catheter via the right or left femoral vein. The ti ...
Belgian HearT rHyTHm meeTing - Association of Black Cardiologists
... with clinical cases and discussions on how to manage the everyday patient. Renowned national and international speakers will present state-of-the-art lectures, case-based discussions, abstracts and posters. Practical issues will be discussed in relation with the most recent guidelines about all fiel ...
... with clinical cases and discussions on how to manage the everyday patient. Renowned national and international speakers will present state-of-the-art lectures, case-based discussions, abstracts and posters. Practical issues will be discussed in relation with the most recent guidelines about all fiel ...
chapter 5 sudden and unexpected death
... iv. Myocardial infarction Myocardial infarction occurs when a severe or a complete occlusion occurs in a coronary artery, and if the collateral circulation is not sufficient to maintain the muscle. If 70% or more of the lumen of a major branch is blocked, an infarct commonly develops. The effect of ...
... iv. Myocardial infarction Myocardial infarction occurs when a severe or a complete occlusion occurs in a coronary artery, and if the collateral circulation is not sufficient to maintain the muscle. If 70% or more of the lumen of a major branch is blocked, an infarct commonly develops. The effect of ...
1 FORM W deducted if you fail to do this!!!!!!
... 20. The normal pacemaker of the heart is the _____. Action potentials travel from there to the ___ via the internodal pathway; once there, the action potential slows down to allow the ventricles to fill with blood. The action potential then rapidly goes through the _____ and then the _____, and from ...
... 20. The normal pacemaker of the heart is the _____. Action potentials travel from there to the ___ via the internodal pathway; once there, the action potential slows down to allow the ventricles to fill with blood. The action potential then rapidly goes through the _____ and then the _____, and from ...
Print - Circulation Research
... MALINOW, BATLLE AND MALAMUD whether flutter or fibrillation is present. In this paper, therefore, both of these mechanisms will indiscriminately be called ventricular arrhythmias. Other effects of CaCl2 on the electrocardiogram, such as A-V or I-V block, and S-T segment changes,4 will not be discus ...
... MALINOW, BATLLE AND MALAMUD whether flutter or fibrillation is present. In this paper, therefore, both of these mechanisms will indiscriminately be called ventricular arrhythmias. Other effects of CaCl2 on the electrocardiogram, such as A-V or I-V block, and S-T segment changes,4 will not be discus ...
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.