Low pressure giant pulmonary artery aneurysms in the adult: natural
... advocated based on previous reports of dissection or rupture. Pulmonary artery aneurysms, even when very large, in the presence of low pulmonary pressures and the absence of left to right congenital or acquired shunts, may not pose such a risk in sharp contrast with those with pulmonary hypertension ...
... advocated based on previous reports of dissection or rupture. Pulmonary artery aneurysms, even when very large, in the presence of low pulmonary pressures and the absence of left to right congenital or acquired shunts, may not pose such a risk in sharp contrast with those with pulmonary hypertension ...
Strain Rate Imaging in Normal and Reduced Diastolic
... Figure 1 Motion of the heart throughout the heart cycle as shown by tissue Doppler imaging. A systolic frame from color Doppler imaging with the red color of velocities toward the probe is shown. The digital velocity values from the indicated points of the ventricle have been extracted and are displ ...
... Figure 1 Motion of the heart throughout the heart cycle as shown by tissue Doppler imaging. A systolic frame from color Doppler imaging with the red color of velocities toward the probe is shown. The digital velocity values from the indicated points of the ventricle have been extracted and are displ ...
Circulating levels of persistent organic pollutants (POPs) are associated with left
... 2.5 MHz transducer was used for the majority of the examinations. Presence of stenosis or regurgitations in the mitral and aortic valves was recorded by use of color and continuous Doppler. LV ejection fraction (EF) was visually assessed from examinations from the parasternal and apical projections. ...
... 2.5 MHz transducer was used for the majority of the examinations. Presence of stenosis or regurgitations in the mitral and aortic valves was recorded by use of color and continuous Doppler. LV ejection fraction (EF) was visually assessed from examinations from the parasternal and apical projections. ...
In utero pulmonary artery and aortic growth and potential for
... in tetralogy of Fallot can be attributed to variable patterns of growth in utero. Main pulmonary artery size, main pulmonary artery/aortic diameter ratio and pattern of pulmonary artery growth may be predictive of the severity of postnatal pulmonary outflow obstruction. Pulmonary atresia can develop ...
... in tetralogy of Fallot can be attributed to variable patterns of growth in utero. Main pulmonary artery size, main pulmonary artery/aortic diameter ratio and pattern of pulmonary artery growth may be predictive of the severity of postnatal pulmonary outflow obstruction. Pulmonary atresia can develop ...
clinical value of unipolar chest and limb leads
... Chest leads were first employed in myocardial infarction by Wood and Wolferth in 1932. Before that time their use was limited to the elucidation of the auricular arrhythmias. The original lead IV was an antero-posterior lead since it was hoped that this would register changes in a plane at right ang ...
... Chest leads were first employed in myocardial infarction by Wood and Wolferth in 1932. Before that time their use was limited to the elucidation of the auricular arrhythmias. The original lead IV was an antero-posterior lead since it was hoped that this would register changes in a plane at right ang ...
File
... For LBBB the wide QRS complex assumes a characteristic change in shape in those leads opposite the left ventricle (right ventricular leads - V1 and V2). ...
... For LBBB the wide QRS complex assumes a characteristic change in shape in those leads opposite the left ventricle (right ventricular leads - V1 and V2). ...
Progressive Dystrophic Pathology in Diaphragm and Impairment of
... Similarly, trichrome staining for collagen did not show a clear difference between the mutant mice and the C57 wild type mouse, with only about 5% of the tissue stained positive for collagen (Fig 1B). However, by 6 months inflammatory infiltration has spread to the entire organ with greatly reduced ...
... Similarly, trichrome staining for collagen did not show a clear difference between the mutant mice and the C57 wild type mouse, with only about 5% of the tissue stained positive for collagen (Fig 1B). However, by 6 months inflammatory infiltration has spread to the entire organ with greatly reduced ...
Simvastatin Modulates Remodeling of Kv4.3 Expression in Rat
... caused by abnormal remodeling of the Kv4-family of transient potassium channels. Inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductase (statins) have recently been shown to exert pleiotropic protective effects in cardiovascular diseases, including anti-arrhythmias. It is hypothesized that re ...
... caused by abnormal remodeling of the Kv4-family of transient potassium channels. Inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductase (statins) have recently been shown to exert pleiotropic protective effects in cardiovascular diseases, including anti-arrhythmias. It is hypothesized that re ...
The Heart
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
10 Chapter General Discussion
... number of recent studies also suggested oxidative stress to be involved in the pathogenesis of diastolic LV dysfunction in HFpEF. In HFpEF rodent models, oxidative stress uncoupled cardiac NOS and induced diastolic LV dysfunction, whereas stimulation of eNOS activity reversed oxidative stress and im ...
... number of recent studies also suggested oxidative stress to be involved in the pathogenesis of diastolic LV dysfunction in HFpEF. In HFpEF rodent models, oxidative stress uncoupled cardiac NOS and induced diastolic LV dysfunction, whereas stimulation of eNOS activity reversed oxidative stress and im ...
14 Cardiovascular Physiology
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
European Heart Rhythm Association/Heart Failure Association joint
... through to fatal ventricular fibrillation (VF). Coupled with their enourmously high spontaneous variability, this makes assessment of their prevalence and incidence within the CHF population extremely difficult. They are especially common in those with ischaemic aetiology and with a lower LVEF.51 Th ...
... through to fatal ventricular fibrillation (VF). Coupled with their enourmously high spontaneous variability, this makes assessment of their prevalence and incidence within the CHF population extremely difficult. They are especially common in those with ischaemic aetiology and with a lower LVEF.51 Th ...
Syncopal Attacks Imitating Epileptic Seizures
... cycling or jogging in days that he recalls were particularly intense. EEG was normal but a synchronous ECG showed long QT syndrome, verified with appropriate cardiological evaluation. Brugada syndrome, characterised by 3 types of ST-segment abnormalities, is another genetic ion channelopathy (usually ...
... cycling or jogging in days that he recalls were particularly intense. EEG was normal but a synchronous ECG showed long QT syndrome, verified with appropriate cardiological evaluation. Brugada syndrome, characterised by 3 types of ST-segment abnormalities, is another genetic ion channelopathy (usually ...
Sudden cardiac death in young Danes
... This new knowledge, while important when counselling the bereaved parents in relations to inheritability of a disease in the family, has also put challenge on how to define SIDS: By definition, a SIDS case should be unexplained. A genetic variant, however, causing an alteration in the cardiac action ...
... This new knowledge, while important when counselling the bereaved parents in relations to inheritability of a disease in the family, has also put challenge on how to define SIDS: By definition, a SIDS case should be unexplained. A genetic variant, however, causing an alteration in the cardiac action ...
Antitachycardia Pacing for Ventricular Tachycardia
... fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF.12−14 Destabilization of monomorphic VT may be related to ischemia, left ventricular dysfunction, electrol ...
... fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF.12−14 Destabilization of monomorphic VT may be related to ischemia, left ventricular dysfunction, electrol ...
Linking left ventricular function and mural architecture: what does
... wall in diastole is not in the middle in systole, as the inner half must thicken by a greater ratio than the outer. Using the same outer size and external systolic change, increasing the diastolic mural thickness to 12 mm increased the EF to 94%, mural thickening to 56%, and inner shortening to 61%. ...
... wall in diastole is not in the middle in systole, as the inner half must thicken by a greater ratio than the outer. Using the same outer size and external systolic change, increasing the diastolic mural thickness to 12 mm increased the EF to 94%, mural thickening to 56%, and inner shortening to 61%. ...
alterations in pulmonary blood flow distribution in heart diseases
... Utilizing the 1311-MAA (macroaggregated albumin labeled with iodine-131) scintillation scanning method, regional pulmonary blood flow distribution was studied in 47 cardiac patients with pulmonary hypertension. Remarkable increase of blood flow in the upper zones of the lung together with decrease i ...
... Utilizing the 1311-MAA (macroaggregated albumin labeled with iodine-131) scintillation scanning method, regional pulmonary blood flow distribution was studied in 47 cardiac patients with pulmonary hypertension. Remarkable increase of blood flow in the upper zones of the lung together with decrease i ...
Pulmonary venous flow by doppler echocardiography: revisited 12
... the presence of severe MR (48). In addition, there are a number of other physiologic and technical factors influencing either the S2 or D velocities, such as mitral stenosis, presence of LV dysfunction, and presence of AF (10,23,35). The decrease in the velocity time integral of PVF is more prominen ...
... the presence of severe MR (48). In addition, there are a number of other physiologic and technical factors influencing either the S2 or D velocities, such as mitral stenosis, presence of LV dysfunction, and presence of AF (10,23,35). The decrease in the velocity time integral of PVF is more prominen ...
nurnal - Journal of the Royal Army Medical Corps
... The significance of these changes is not clear and they require further study, and I defer consideration of them to a future occasion. The importance of ascertaining what happens in the healthy individual cannot be over-estimated. Conditions which are noticed first in an unhealthy man are liable and ...
... The significance of these changes is not clear and they require further study, and I defer consideration of them to a future occasion. The importance of ascertaining what happens in the healthy individual cannot be over-estimated. Conditions which are noticed first in an unhealthy man are liable and ...
ANATOMICAL STUDY OF THE ANTERIOR INTERVENTRICULAR
... the proximal portion was 1.5 mm in diameter, which was the case in 30% of the angiographies reviewed, as reported by Bedard et al. [4], compared to our finding of 65%. Topaz et al. [19,21] demonstrated that angioplasty provided an excellent method for revascularizing the interventricular septal branc ...
... the proximal portion was 1.5 mm in diameter, which was the case in 30% of the angiographies reviewed, as reported by Bedard et al. [4], compared to our finding of 65%. Topaz et al. [19,21] demonstrated that angioplasty provided an excellent method for revascularizing the interventricular septal branc ...
Echocardiography Can Identify Patients With Increased Pulmonary
... Methods and Results—The study comprised 98 patients investigated within 24 hours of right heart catheterization and 20 control subjects. The pressure reflection variables were obtained by pulsed Doppler in the pulmonary artery and continuous Doppler of tricuspid regurgitation. We selected 3 variable ...
... Methods and Results—The study comprised 98 patients investigated within 24 hours of right heart catheterization and 20 control subjects. The pressure reflection variables were obtained by pulsed Doppler in the pulmonary artery and continuous Doppler of tricuspid regurgitation. We selected 3 variable ...
MITRAL REGURGITATION IN LEFT VENTRICULAR
... The heart pumps blood around the body. Its most important component is the left ventricle (LV) because it pumps freshly oxygenated blood out to the entire body. Heart failure is when a diseased heart cannot provide the body with enough blood flow. One treatment option for heart failure is the Left V ...
... The heart pumps blood around the body. Its most important component is the left ventricle (LV) because it pumps freshly oxygenated blood out to the entire body. Heart failure is when a diseased heart cannot provide the body with enough blood flow. One treatment option for heart failure is the Left V ...
PULMONARY ARTERY PRESSURE Approaches The
... formation in and around the catheter, but will also occur if the catheter remains in the wedge position for any length of time. The latter can be avoided by continuously displaying the PAP so that the spontaneous appearance of a wedge pressure (caused by softening and migration of the catheter) can ...
... formation in and around the catheter, but will also occur if the catheter remains in the wedge position for any length of time. The latter can be avoided by continuously displaying the PAP so that the spontaneous appearance of a wedge pressure (caused by softening and migration of the catheter) can ...
34066-Review - F6 Publishing Home
... well as its deleterious effect on mortality[14] are well known, its concomitant correction has yet to be performed to an adequate extent[1]. In the present study, the conducting of a successful mitral valve repair was found to be a protective factor when tricuspid annuloplasty was performed in patie ...
... well as its deleterious effect on mortality[14] are well known, its concomitant correction has yet to be performed to an adequate extent[1]. In the present study, the conducting of a successful mitral valve repair was found to be a protective factor when tricuspid annuloplasty was performed in patie ...
Mechanical Interactions between Four Heart Chambers with and
... atrium and the ventricle, (2) the right ventricle and left ventricles, (3) the atrium and one ventricle vs. the other ventricle, and finally (4) the left and right atrium and the right ventricle vs. the left ventricle. For these purposes, we inserted compliant balloons into the four heart chambers w ...
... atrium and the ventricle, (2) the right ventricle and left ventricles, (3) the atrium and one ventricle vs. the other ventricle, and finally (4) the left and right atrium and the right ventricle vs. the left ventricle. For these purposes, we inserted compliant balloons into the four heart chambers w ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.