Nano-imaging of the beating mouse heart in vivo
... AcGFP in Z-disks via ADV injection. Same as in Fig. 1 C, right. Sarcomeres in the yellow rectangular outline were used for the analysis in the middle trace. Bar, 10 µm. (Middle) Plot profile in the yellow rectangular outline in top. SL, 1.97 ± 0.22 µm. (Bottom) Frequency plot showing SL in myocytes ...
... AcGFP in Z-disks via ADV injection. Same as in Fig. 1 C, right. Sarcomeres in the yellow rectangular outline were used for the analysis in the middle trace. Bar, 10 µm. (Middle) Plot profile in the yellow rectangular outline in top. SL, 1.97 ± 0.22 µm. (Bottom) Frequency plot showing SL in myocytes ...
ACVIM Consensus Statement Guidelines for the
... any of the subtypes of serotonin, endothelin, or angiotensin receptors) on fibroblast cell membranes in the valves of affected dogs may play a role in the pathophysiology of the valvular lesions.13 Systemic or local metabolic, neurohormonal or inflammatory mediators (eg, endogenous catecholamines and ...
... any of the subtypes of serotonin, endothelin, or angiotensin receptors) on fibroblast cell membranes in the valves of affected dogs may play a role in the pathophysiology of the valvular lesions.13 Systemic or local metabolic, neurohormonal or inflammatory mediators (eg, endogenous catecholamines and ...
Electrolytes and pH Changes in Relation to Hypothermic Ventricular
... temperature, but showed a significant positive balance at 24 C , i.e., the coronary venous Ca level was less than the arterial. Despite the fact that in 2 of the 10 dogs no difference in total Ca was observed the mean difference was significant (p = <0.02). Moreover, if one considers only the ionize ...
... temperature, but showed a significant positive balance at 24 C , i.e., the coronary venous Ca level was less than the arterial. Despite the fact that in 2 of the 10 dogs no difference in total Ca was observed the mean difference was significant (p = <0.02). Moreover, if one considers only the ionize ...
Reverse Takotsubo Cardiomyopathy
... mL. The clinical presentation can be complicated by pulmonary edema and hypotension resulting from poor forward flow,18 as was seen in our patient. The preliminary diagnosis is made by echocardiography, which shows segmental hypokinesis that is inconsistent with any particular coronary artery distri ...
... mL. The clinical presentation can be complicated by pulmonary edema and hypotension resulting from poor forward flow,18 as was seen in our patient. The preliminary diagnosis is made by echocardiography, which shows segmental hypokinesis that is inconsistent with any particular coronary artery distri ...
BIOL2020 Human Anatomy and Physiology II RSCC Lab 1 Muscle
... • Samples of normal and abnormal EKG recordings (if available) ...
... • Samples of normal and abnormal EKG recordings (if available) ...
Noncompaction of the ventricular myocardium with bicuspid aortic
... are used to diagnostic echocardiographic criteria. Noncompacted to compacted layer ratio calculated at the level of the papillary muscles was 2.6 in the patient presented in this report. Magnetic resonance imaging, computed tomography and ventriculography can also be useful imaging modalities (5). H ...
... are used to diagnostic echocardiographic criteria. Noncompacted to compacted layer ratio calculated at the level of the papillary muscles was 2.6 in the patient presented in this report. Magnetic resonance imaging, computed tomography and ventriculography can also be useful imaging modalities (5). H ...
Prognostic Significance of Right Bundle Branch Block in Patients
... acute anterior myocardial infarction (MI). Considering the anatomy and vascular supply of the conduction system, RBBB is usually the manifestation of large anterior MI that are often accompanied by heart failure and atrioventricular (AV) conduction block [1, 2], but the mechanism by which it represe ...
... acute anterior myocardial infarction (MI). Considering the anatomy and vascular supply of the conduction system, RBBB is usually the manifestation of large anterior MI that are often accompanied by heart failure and atrioventricular (AV) conduction block [1, 2], but the mechanism by which it represe ...
The Heart - Pearson Higher Education
... ur ceaselessly beating heart has intrigued people for centuries. The ancient Greeks believed the heart was the seat of intelligence. Others thought it was the source of emotions. While these ideas have proved false, we do know that emotions affect heart rate. When your heart pounds or skips a beat, ...
... ur ceaselessly beating heart has intrigued people for centuries. The ancient Greeks believed the heart was the seat of intelligence. Others thought it was the source of emotions. While these ideas have proved false, we do know that emotions affect heart rate. When your heart pounds or skips a beat, ...
Computational modeling of cardiac electrophysiology
... Disturbed conduction and uncoordinated electrical signals can generate abnormal heart rhythms, so-called arrhythmias. Typical examples of arrhythmias are bradycardia, tachycardia, heart block, re-entry, and atrial and ventricular fibrillation. Arrhythmias produce a broad range of symptoms from barel ...
... Disturbed conduction and uncoordinated electrical signals can generate abnormal heart rhythms, so-called arrhythmias. Typical examples of arrhythmias are bradycardia, tachycardia, heart block, re-entry, and atrial and ventricular fibrillation. Arrhythmias produce a broad range of symptoms from barel ...
Introduction to Echocardiography
... several important structures. Second, the ability to position the transducer in the esophagus or stomach for extended periods provides an opportunity to monitor the heart over time, such as during cardiac surgery.Third, although more invasive than other forms of echocardiography, the technique has p ...
... several important structures. Second, the ability to position the transducer in the esophagus or stomach for extended periods provides an opportunity to monitor the heart over time, such as during cardiac surgery.Third, although more invasive than other forms of echocardiography, the technique has p ...
Cardiac MRI evaluation of myocardial disease
... disease, each being differentially sensitive to pathological process (table 1). The technique potential is best considered in rare (infiltrations), common (oedema) and ubiquitous (diffuse fibrosis) disease processes. For a ‘feel’ for the potential of mapping in different pathological processes compare ...
... disease, each being differentially sensitive to pathological process (table 1). The technique potential is best considered in rare (infiltrations), common (oedema) and ubiquitous (diffuse fibrosis) disease processes. For a ‘feel’ for the potential of mapping in different pathological processes compare ...
INTRODUCTION - JACC: Heart Failure
... VCO2 throughout exercise.(1) HF patients (predominantly HFrEF) with a normal VE/VCO2 slope had an 18-month survival of 95% compared to a survival rate of 69% in those with an abnormal slope.(15) When compared to other CPET variables in one study of 142 HFrEF patients, VE/VCO2 slope was the strongest ...
... VCO2 throughout exercise.(1) HF patients (predominantly HFrEF) with a normal VE/VCO2 slope had an 18-month survival of 95% compared to a survival rate of 69% in those with an abnormal slope.(15) When compared to other CPET variables in one study of 142 HFrEF patients, VE/VCO2 slope was the strongest ...
High prevalence of acute myocardial damage in a hospital necropsy
... determine why some of the patients with the risk factors had no C9 deposition, but increasing age, heart weight, and total numbers of risk factors and pathological findings were associated with increasing grade of C9 immunostaining (tables 2 and 3). Another method of detecting acute myocardial damag ...
... determine why some of the patients with the risk factors had no C9 deposition, but increasing age, heart weight, and total numbers of risk factors and pathological findings were associated with increasing grade of C9 immunostaining (tables 2 and 3). Another method of detecting acute myocardial damag ...
PDF
... Dobutamine echocardiography can be used to evaluate myocardial reserve. The aim of this study was to estimate the functional status of chronic HF in patients with dilated cardiomyopathy, by investigating the changes in echo-variables, as assessed by echo-dobutamine, in relation with VO 2 max. Method ...
... Dobutamine echocardiography can be used to evaluate myocardial reserve. The aim of this study was to estimate the functional status of chronic HF in patients with dilated cardiomyopathy, by investigating the changes in echo-variables, as assessed by echo-dobutamine, in relation with VO 2 max. Method ...
transfer of the heart pacemaker during juvenile development in the
... saline (Yamagishi, 1996). The effects of TTX on the heartbeat were further examined in the heart of embryos and early juveniles. Perfusion of saline containing 10−6 mol l−1 TTX, which suppresses neuronal spiking in the cardiac ganglion (see below), rapidly eliminated spike potentials in the heart mu ...
... saline (Yamagishi, 1996). The effects of TTX on the heartbeat were further examined in the heart of embryos and early juveniles. Perfusion of saline containing 10−6 mol l−1 TTX, which suppresses neuronal spiking in the cardiac ganglion (see below), rapidly eliminated spike potentials in the heart mu ...
Echocardiographic Assessment of Pulmonary Artery Systolic
... Doppler echocardiography is a noninvasive, widely available imaging modality that can be used to estimate the pulmonary artery systolic pressure (PASP), most commonly by calculating the transtricuspid gradient from the regurgitant jet velocity.18 Studies comparing RHC with echocardiographic estimate ...
... Doppler echocardiography is a noninvasive, widely available imaging modality that can be used to estimate the pulmonary artery systolic pressure (PASP), most commonly by calculating the transtricuspid gradient from the regurgitant jet velocity.18 Studies comparing RHC with echocardiographic estimate ...
Congenital Heart Diseases
... Ventricular Septal Defect (VSD) • There is a hole within the membranous or muscular portions of the intraventricular septum that produces a left-toright shunt, more severe with larger defects ...
... Ventricular Septal Defect (VSD) • There is a hole within the membranous or muscular portions of the intraventricular septum that produces a left-toright shunt, more severe with larger defects ...
... substrate for the development of heart disease in the context of ACP, and not necessarily because of ACP, has been emphasized in other publications. Studies show that the greatest risk of an unfavorable outcome could be determined by the pre-existence of other factors, such as: structural heart dise ...
An unusual case of a bicuspid aortic valve and non compaction of
... shoulder pain, shortness of breath, dizziness and diaphoresis which started shortly after walking. Emergency medical services was called and on arrival found the patient in sustained VT at rate of 300 beats/min. In the field, he received three boluses of adenosine and one bolus of lidocaine without ...
... shoulder pain, shortness of breath, dizziness and diaphoresis which started shortly after walking. Emergency medical services was called and on arrival found the patient in sustained VT at rate of 300 beats/min. In the field, he received three boluses of adenosine and one bolus of lidocaine without ...
Differentiation of "AV Junctional Rhythms"
... junction have clearly demonstrated that all three zones of the A-V node (upper nodal [AN], midnodal [NI, and lower nodal [NH] regions) exhibit action potentials which are functionally different from those recorded in contiguous atrial and His bundle cells. In addition, the amplitude and rate of rise ...
... junction have clearly demonstrated that all three zones of the A-V node (upper nodal [AN], midnodal [NI, and lower nodal [NH] regions) exhibit action potentials which are functionally different from those recorded in contiguous atrial and His bundle cells. In addition, the amplitude and rate of rise ...
Reducing Heart Failure Readmissions: Case Studies Utilizing
... “The diagnoses associated with 30-day readmission are diverse and are not associated with patient demographic characteristics or time after discharge for older patients initially hospitalized with HF, acute MI, or pneumonia. Although a high percentage of 30-day readmissions occurred relatively soon ...
... “The diagnoses associated with 30-day readmission are diverse and are not associated with patient demographic characteristics or time after discharge for older patients initially hospitalized with HF, acute MI, or pneumonia. Although a high percentage of 30-day readmissions occurred relatively soon ...
European experience of the convergent atrial fibrillation procedure
... persistent, with an average AF duration of 4.3 4.4 years, as defined by the Heart Rhythm Society recommendations.10 Baseline demographics are detailed in Table 1. The mean patient age was 56.3 years, and 81% were male. The mean baseline left atrial size and left ventricular ejection fraction were ...
... persistent, with an average AF duration of 4.3 4.4 years, as defined by the Heart Rhythm Society recommendations.10 Baseline demographics are detailed in Table 1. The mean patient age was 56.3 years, and 81% were male. The mean baseline left atrial size and left ventricular ejection fraction were ...
Minimizing Complications from Temporary Epicardial Pacing Wires
... Check for epigastric artery and rectus muscle bleeding after TEPW needles passage. 6. Keep electrode ends of TEPW electrically isolated in some fashion. ...
... Check for epigastric artery and rectus muscle bleeding after TEPW needles passage. 6. Keep electrode ends of TEPW electrically isolated in some fashion. ...
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.