Conus arteriosus: an anatomic and terminologic evaluation
... and “infundibulum” are used synonymously to define the cone-shaped, smooth-surfaced area near the opening of the pulmonary trunk (pulmonary orifice) (Figure 2). The conus branch of the right coronary artery (ramus coni arteriosi) and the conus branch of the anterior interventricular branch of the le ...
... and “infundibulum” are used synonymously to define the cone-shaped, smooth-surfaced area near the opening of the pulmonary trunk (pulmonary orifice) (Figure 2). The conus branch of the right coronary artery (ramus coni arteriosi) and the conus branch of the anterior interventricular branch of the le ...
Biphasic Changes in Maximum Relaxation Rate during Progressive
... 0% N2-5% CO2 gas mixture. The same sets of level with intervening periods of reoxygenation are changes in mechanical function were observed shown in rows 2 and 3, respectively, of Table 1. when progressive hypoxia was produced without Overall, papillary muscle function remained relaintervening perio ...
... 0% N2-5% CO2 gas mixture. The same sets of level with intervening periods of reoxygenation are changes in mechanical function were observed shown in rows 2 and 3, respectively, of Table 1. when progressive hypoxia was produced without Overall, papillary muscle function remained relaintervening perio ...
Artery in Man: Evaluation of Ventricular Volume Measurements from
... and on the conditions of mixing beyond the semilunar valves (since washout curves of the indicator are usually recorded at this site). The problem was approached by studying the influence of different injection and sampling sites on the ventricular indicator washout curve. Two indicators (a dye and ...
... and on the conditions of mixing beyond the semilunar valves (since washout curves of the indicator are usually recorded at this site). The problem was approached by studying the influence of different injection and sampling sites on the ventricular indicator washout curve. Two indicators (a dye and ...
Single Chamber and Dual Chamber Permanent Cardiac Pacemakers
... purposes. It does not constitute medical advice. POLICY SUMMARY Overview Permanent cardiac pacemakers refer to a group of self-contained, battery operated, implanted devices that send electrical stimulation to the heart through one or more implanted leads. They are often classified by the number of ...
... purposes. It does not constitute medical advice. POLICY SUMMARY Overview Permanent cardiac pacemakers refer to a group of self-contained, battery operated, implanted devices that send electrical stimulation to the heart through one or more implanted leads. They are often classified by the number of ...
mechanisms of cardiac septation and valve development
... develop into atrioventricular (mitral and tricuspid) valves, whereas the OFT endocardial cushions give rise to semilunar (aortic and pulmonic) valves (Fig. 1). The formation of heart valves ensures that blood flows in one direction from the atria to ventricles and then to the arteries. Multiple cell ...
... develop into atrioventricular (mitral and tricuspid) valves, whereas the OFT endocardial cushions give rise to semilunar (aortic and pulmonic) valves (Fig. 1). The formation of heart valves ensures that blood flows in one direction from the atria to ventricles and then to the arteries. Multiple cell ...
VALIDATION OF MAXIMAL HEART RATE REGRESSION
... studies would disagree [55, 86]. Presently, there is not enough evidence to support a finding that suggests that females have a higher HRmax than their respective male counterparts. Furthermore, there is not enough evidence to reflect the MHRE HRmax = 226 - age designed specifically for the female. ...
... studies would disagree [55, 86]. Presently, there is not enough evidence to support a finding that suggests that females have a higher HRmax than their respective male counterparts. Furthermore, there is not enough evidence to reflect the MHRE HRmax = 226 - age designed specifically for the female. ...
Anterior Mitral Basal `Stay` Chords are Essential for Left Ventricular
... recorded simultaneously on the same screen by the Sonometrics system. This ensured that all data were synchronized and recorded on the same timeline. Epicardial, 2D echocardiography with pulsed-wave and color Doppler was used to determine the presence of mitral regurgitation before and after SC tran ...
... recorded simultaneously on the same screen by the Sonometrics system. This ensured that all data were synchronized and recorded on the same timeline. Epicardial, 2D echocardiography with pulsed-wave and color Doppler was used to determine the presence of mitral regurgitation before and after SC tran ...
Combined angiotensin receptor blocker and ACE inhibitor on
... amplified using the forward primer 5⬘-ATGGGTCCCTCTGGTCCTCG-3⬘ and the reverse primer 5⬘-ACCAGTAGCACCATCATTTCC-3⬘. Collagen III transcripts were amplified using the forward primer 5⬘-TCCGTTCTCTGCGATGACATA-3⬘ and the reverse primer 5⬘-AGCTGGACCTTTGATACCTGG-3⬘. Each of the PCR products was separated on ...
... amplified using the forward primer 5⬘-ATGGGTCCCTCTGGTCCTCG-3⬘ and the reverse primer 5⬘-ACCAGTAGCACCATCATTTCC-3⬘. Collagen III transcripts were amplified using the forward primer 5⬘-TCCGTTCTCTGCGATGACATA-3⬘ and the reverse primer 5⬘-AGCTGGACCTTTGATACCTGG-3⬘. Each of the PCR products was separated on ...
Effects of right ventricular pacing on left ventricular ejection fraction
... trial, where a uniform pacing mode for all patients was selected. These findings are in concordance with the DAVID II Trial, where atrial pacing was shown to be a safe alternative when pacing was desired, but afforded no clear advantage or disadvantage over a ventricular pacing mode that minimized p ...
... trial, where a uniform pacing mode for all patients was selected. These findings are in concordance with the DAVID II Trial, where atrial pacing was shown to be a safe alternative when pacing was desired, but afforded no clear advantage or disadvantage over a ventricular pacing mode that minimized p ...
with rheumatic mitral stenosis and normal sinus rhythm - Heart
... been done exclusively in patients with discrepancy may be attributable to the differrheumatic mitral stenosis in normal sinus ence in the study population. Significant rhythm. Iliceto et al 10 performed a trans- mitral regurgitation may prevent the developthoracic echo study on 10 patients with mitr ...
... been done exclusively in patients with discrepancy may be attributable to the differrheumatic mitral stenosis in normal sinus ence in the study population. Significant rhythm. Iliceto et al 10 performed a trans- mitral regurgitation may prevent the developthoracic echo study on 10 patients with mitr ...
serious arrhythmia induced by terfenadine
... In January 1997 a case of torsade de pointes ventricular tachycardia was detected in a previously healthy woman taking terfenadine with erythromycin. Electrocardiography revealed QT interval prolongation and QRS widening. One hour after emergency room admission, her arrhythmia degenerated to ventric ...
... In January 1997 a case of torsade de pointes ventricular tachycardia was detected in a previously healthy woman taking terfenadine with erythromycin. Electrocardiography revealed QT interval prolongation and QRS widening. One hour after emergency room admission, her arrhythmia degenerated to ventric ...
Cardiac sodium channel, its mutations and their spectrum of
... inactivated) and their structure help to understand the cardiac regulation processes. There are areas in the cardiac muscle with anatomical and functional differentiation that present automatism, thus subjecting the rest of the fibers to their own rhythm. The rate of these (pacemaker) areas could be ...
... inactivated) and their structure help to understand the cardiac regulation processes. There are areas in the cardiac muscle with anatomical and functional differentiation that present automatism, thus subjecting the rest of the fibers to their own rhythm. The rate of these (pacemaker) areas could be ...
Variations in the anatomy of the coronary arteries
... better analysis of the heart’s blood supply and is less prone to mistake, as even the vessels that penetrate the cardiac muscle can be evaluated, as opposed to the macroscopic dissection, that may neglect microscopic anastomosis between the left and right circulation. The most commonly used techniqu ...
... better analysis of the heart’s blood supply and is less prone to mistake, as even the vessels that penetrate the cardiac muscle can be evaluated, as opposed to the macroscopic dissection, that may neglect microscopic anastomosis between the left and right circulation. The most commonly used techniqu ...
16 Myocardial Disease
... with left ventricular hypertrophy (LVH) do not have sarcomeric disease but rather metabolic disorders, mitochondrial cytopathies and syndromes with characteristic extracardiac features, disease states that may exist in adults with apparent HCM. Routine measurement of plasma αgalactosidase A levels a ...
... with left ventricular hypertrophy (LVH) do not have sarcomeric disease but rather metabolic disorders, mitochondrial cytopathies and syndromes with characteristic extracardiac features, disease states that may exist in adults with apparent HCM. Routine measurement of plasma αgalactosidase A levels a ...
Electrical Cardioversion
... dysfunction (low left ventricular ejection fraction), valvular heart disease or permanent AF were excluded from the study. Twenty-four of the patients had been taking ACE inhibitors [enalapril (11), lisinopril (8), and captopril (5)] for at least 6 months before inclusion and continued to do so for ...
... dysfunction (low left ventricular ejection fraction), valvular heart disease or permanent AF were excluded from the study. Twenty-four of the patients had been taking ACE inhibitors [enalapril (11), lisinopril (8), and captopril (5)] for at least 6 months before inclusion and continued to do so for ...
left ventricular diastolic function part i: relaxing is easy
... methods of assessment will be discussed: transmitral inflow, pulmonary venous flow, mitral annulus tissue Doppler, and color M-mode Doppler (propagation velocity, Vp). No single test is an absolute determinant of diastolic function; therefore, multiple methods must be performed in order to accurate ...
... methods of assessment will be discussed: transmitral inflow, pulmonary venous flow, mitral annulus tissue Doppler, and color M-mode Doppler (propagation velocity, Vp). No single test is an absolute determinant of diastolic function; therefore, multiple methods must be performed in order to accurate ...
How to use echo-Doppler in clinical trials: different modalities for
... of at least three heart beats in patients with sinus rhythm and of averaging measurements derived from 10 cardiac cycles (alternatively, from three non-consecutive beats with cycle lengths within 10% and 20% of the average heart rate) in patients with atrial fibrillation (AF).3,7 In order to minimiz ...
... of at least three heart beats in patients with sinus rhythm and of averaging measurements derived from 10 cardiac cycles (alternatively, from three non-consecutive beats with cycle lengths within 10% and 20% of the average heart rate) in patients with atrial fibrillation (AF).3,7 In order to minimiz ...
PDF ansehen - Deutsches Herzzentrum München
... members should come from an adult or pediatric background can be debated. A long-term commitment to ACHD care will improve their knowledge and abilities. Access to excellent congenital heart surgery is essential. This does not need to be in your own institution, but it certainly needs to be accessib ...
... members should come from an adult or pediatric background can be debated. A long-term commitment to ACHD care will improve their knowledge and abilities. Access to excellent congenital heart surgery is essential. This does not need to be in your own institution, but it certainly needs to be accessib ...
High Time-Resolved Cardiac Functional Imaging - MIP :: Lab
... for cardiac function assessment [2], [3]. In a context where cardiovascular diseases are still the leading cause of mortality worldwide [4], small animal cardiac MR imaging is an important research topic for biology and medicine, notably with the development of knockout and transgenic (TG) mice to s ...
... for cardiac function assessment [2], [3]. In a context where cardiovascular diseases are still the leading cause of mortality worldwide [4], small animal cardiac MR imaging is an important research topic for biology and medicine, notably with the development of knockout and transgenic (TG) mice to s ...
De Novo Synthesis of Myocardial Adenine Nucleotides in the Rat
... activity of glycine (dpm/nmole). In all in vivo studies, values of specific activity of tissue glycine were corrected for the specific activity of glycine present in an extracellular space of 20% (15) to obtain the specific activity of the intracellular glycine pool. The changes in the specific acti ...
... activity of glycine (dpm/nmole). In all in vivo studies, values of specific activity of tissue glycine were corrected for the specific activity of glycine present in an extracellular space of 20% (15) to obtain the specific activity of the intracellular glycine pool. The changes in the specific acti ...
ACC/AHA/ESC Practice Guidelines
... sinus node, then the sinus node can be overdriven and the ectopic focus will become the predominant pacemaker of the heart. The rapid firing rate may be incessant (ie, more than 50% of the day) or episodic. Triggered activity is a tachycardia mechanism associated with disturbances of recovery or rep ...
... sinus node, then the sinus node can be overdriven and the ectopic focus will become the predominant pacemaker of the heart. The rapid firing rate may be incessant (ie, more than 50% of the day) or episodic. Triggered activity is a tachycardia mechanism associated with disturbances of recovery or rep ...
PDF
... ectopic foci and triggered AF-mediated by triggered activity or abnormal automaticity,48 although this has not been a universl finding.49 Since both vagal AF and PV-related AF often occur in patients without structural heart disease,1 it is natural to investigate the role of cholinergic effects on P ...
... ectopic foci and triggered AF-mediated by triggered activity or abnormal automaticity,48 although this has not been a universl finding.49 Since both vagal AF and PV-related AF often occur in patients without structural heart disease,1 it is natural to investigate the role of cholinergic effects on P ...
RAAS Basic physiology and Pathophysiolgy
... glands), remaining 10% is found in soluble form in the interstium of vessel wall. Where they have not only endocrine but also paracrine and autocrine effects. ...
... glands), remaining 10% is found in soluble form in the interstium of vessel wall. Where they have not only endocrine but also paracrine and autocrine effects. ...
Full Title: Visceral Pericardium: Macromolecular - AJP
... using the volumes applied in this study. Ten milliliter aliquots of saline were instilled into the balloon and catheter pressure was recorded via an inline pressure transducer. The full range of the volume pressure relationship was recorded three times. The heart was then removed from the saline and ...
... using the volumes applied in this study. Ten milliliter aliquots of saline were instilled into the balloon and catheter pressure was recorded via an inline pressure transducer. The full range of the volume pressure relationship was recorded three times. The heart was then removed from the saline and ...
From basic mechanisms to clinical applications in heart protection
... include confounding factors, such as age, co-morbidity, comedication and anesthetic regimen in procedures requiring ...
... include confounding factors, such as age, co-morbidity, comedication and anesthetic regimen in procedures requiring ...
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.