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Infrequently Performed Studies in Nuclear Medicine: Part 1
... is a medical problem in which an excess of fluid accumulation in the peritoneal cavity occurs. This may be secondary to a variety of medical problems, including liver failure and kidney disease. The LeVeen shunt is a peritoneovenous shunt, intended to drain the ascites into the venous system. It is ...
... is a medical problem in which an excess of fluid accumulation in the peritoneal cavity occurs. This may be secondary to a variety of medical problems, including liver failure and kidney disease. The LeVeen shunt is a peritoneovenous shunt, intended to drain the ascites into the venous system. It is ...
Fibrosing mediastinitis as a rare mechanism of pulmonary oedema in sarcoidosis
... obstruction [10–13]. This happened in three of 64 patients (4.6%) with fibrosing mediastinitis in the study by SCHOWENGERDT et al. [11]. Clinical manifestations include cough, progressive respiratory distress and haemoptysis. This pattern of symptoms has been called the ‘‘the pseudomitral stenosis s ...
... obstruction [10–13]. This happened in three of 64 patients (4.6%) with fibrosing mediastinitis in the study by SCHOWENGERDT et al. [11]. Clinical manifestations include cough, progressive respiratory distress and haemoptysis. This pattern of symptoms has been called the ‘‘the pseudomitral stenosis s ...
PDF - Romanian Journal of Cardiology
... can be expressed in the frequency or in the time domain.The most complete characterization is represented by the input impedance spectrum, a frequencydomain analysis of the arterial circulation, which describes the relationship between arterial pressure and flow over an entire cardiac cycle, includi ...
... can be expressed in the frequency or in the time domain.The most complete characterization is represented by the input impedance spectrum, a frequencydomain analysis of the arterial circulation, which describes the relationship between arterial pressure and flow over an entire cardiac cycle, includi ...
Evaluation of the Right Ventricular Function in Hypertrophic
... for basal segments of LV (lateral, inferior and anterior) between HOCM and controls. Septal basal segment was excluded due to a possible affection by the scar after ASA. The parameters of RV and right atrium are presented in Table 3. There was no difference in conventional parameters of RV either. A ...
... for basal segments of LV (lateral, inferior and anterior) between HOCM and controls. Septal basal segment was excluded due to a possible affection by the scar after ASA. The parameters of RV and right atrium are presented in Table 3. There was no difference in conventional parameters of RV either. A ...
Teaching Rounds in Cardiac Electrophysiology
... bradycardia of 45 beats/min. Twelve-lead ECG showed fixed R-R intervals. No clear P-wave activity was identified. However, there was small-amplitude baseline electric activity of debatable origin, interpreted variously by experienced electrocardiographers as standstill, artifact, or atrial fibrillat ...
... bradycardia of 45 beats/min. Twelve-lead ECG showed fixed R-R intervals. No clear P-wave activity was identified. However, there was small-amplitude baseline electric activity of debatable origin, interpreted variously by experienced electrocardiographers as standstill, artifact, or atrial fibrillat ...
... Background: Mitral valve stenosis is often associated with increased pulmonary vascular resistance resulting in pulmonary hypertension, which may lead to or exacerbate right heart dysfunction. Hypocapnia is a known pulmonary vasodilator. The purpose of this study was to evaluate whether induced hypo ...
Intraoperative Recording of Specialized Atrioventricular Conduction
... Two patients had double outlet right ventricle with ventricular septal defect and pulmonary artery band, and one patient each had Ebstein's anomaly and single atrium with AV canal defect. Results In 39 of the 47 patients studied, specialized atrial ventricular conduction tissue was identified by the ...
... Two patients had double outlet right ventricle with ventricular septal defect and pulmonary artery band, and one patient each had Ebstein's anomaly and single atrium with AV canal defect. Results In 39 of the 47 patients studied, specialized atrial ventricular conduction tissue was identified by the ...
The use of isovolumic contraction velocity to determine right
... ventricular filling pressures Isovolumic contraction velocity measured from base and mid cavity level correlated significantly with right ventricular end diastolic pressure (r Z ÿ0.47 and r Z ÿ0.49, p ! 0.05, for both, Fig. 4). We also found a relation between right atrial mean pressure and isovolum ...
... ventricular filling pressures Isovolumic contraction velocity measured from base and mid cavity level correlated significantly with right ventricular end diastolic pressure (r Z ÿ0.47 and r Z ÿ0.49, p ! 0.05, for both, Fig. 4). We also found a relation between right atrial mean pressure and isovolum ...
Echocardiography Can Identify Patients With Increased Pulmonary
... Background—Pulmonary hypertension is a frequent finding in patients with cardiopulmonary disorders. It is important to recognize pulmonary hypertension due to increased pulmonary vascular resistance (PVR), as this affects treatment and prognosis. Patients with increased PVR have an increased pulmona ...
... Background—Pulmonary hypertension is a frequent finding in patients with cardiopulmonary disorders. It is important to recognize pulmonary hypertension due to increased pulmonary vascular resistance (PVR), as this affects treatment and prognosis. Patients with increased PVR have an increased pulmona ...
biodiversity of the coronary arteries in cattle
... groove goes down through this groove as a subsinusal branch. With a long trajectory, circumflex branch emits collaterals both from the atrial and ventricular edge, the latter being more numerous and more voluminous. The main collaterals emitted from the ventricular edge of heart, have a descendant ...
... groove goes down through this groove as a subsinusal branch. With a long trajectory, circumflex branch emits collaterals both from the atrial and ventricular edge, the latter being more numerous and more voluminous. The main collaterals emitted from the ventricular edge of heart, have a descendant ...
PULMONARY AIR EMBOLISM
... in experimental animals. As Freis7 >and Wright proved that air bubbles in the pulmonary artery may remain for a long time enough to cause damage of the pulmonary vascular bed. Recently, Barnard 11 reported that repeated intravenous injections of oxygen, nitrogen and argon gas caused arteriosclerosis ...
... in experimental animals. As Freis7 >and Wright proved that air bubbles in the pulmonary artery may remain for a long time enough to cause damage of the pulmonary vascular bed. Recently, Barnard 11 reported that repeated intravenous injections of oxygen, nitrogen and argon gas caused arteriosclerosis ...
Dilated Right Pulmonary Veins in Mitral Insufficiency
... in mitral stenosis and left heart failure. These have Regurgitation of contrast substance during angi emphasized the dilatation of the superior pulmonary ography into the pulmonary veins has been reveins and the decrease in caliber of the inferior ported. Ross and Criley’3 and Arvidsson’4 both pulmo ...
... in mitral stenosis and left heart failure. These have Regurgitation of contrast substance during angi emphasized the dilatation of the superior pulmonary ography into the pulmonary veins has been reveins and the decrease in caliber of the inferior ported. Ross and Criley’3 and Arvidsson’4 both pulmo ...
Dilated Right Pulmonary Veins in Mitral Insufficiency
... in mitral stenosis and left heart failure. These have Regurgitation of contrast substance during angi emphasized the dilatation of the superior pulmonary ography into the pulmonary veins has been reveins and the decrease in caliber of the inferior ported. Ross and Criley’3 and Arvidsson’4 both pulmo ...
... in mitral stenosis and left heart failure. These have Regurgitation of contrast substance during angi emphasized the dilatation of the superior pulmonary ography into the pulmonary veins has been reveins and the decrease in caliber of the inferior ported. Ross and Criley’3 and Arvidsson’4 both pulmo ...
Human Heart Weight at High Altitude
... about 30 days after birth and reaches a plateau at 56 days. Thereafter the degree of relative right ventricular hypertrophy changes only slightly through the adult years. No evidence was found of postnatal atrophy of the right ventricle either at sea level or high altitude nor of septal hypertrophy ...
... about 30 days after birth and reaches a plateau at 56 days. Thereafter the degree of relative right ventricular hypertrophy changes only slightly through the adult years. No evidence was found of postnatal atrophy of the right ventricle either at sea level or high altitude nor of septal hypertrophy ...
PDF file - Via Medica Journals
... atrial fibrillation with risk of hospitalization for heart failure. Atrial fibrillation is an independent and significant predictor of hospitalization for congestive heart failure, which was documented in all the above quoted studies. For example, in the MADIT II, atrial fibrillation at baseline was ...
... atrial fibrillation with risk of hospitalization for heart failure. Atrial fibrillation is an independent and significant predictor of hospitalization for congestive heart failure, which was documented in all the above quoted studies. For example, in the MADIT II, atrial fibrillation at baseline was ...
Reference Right Atrial Function Determined by Steady
... Abhayaratna et al (3) suggested that left atrial volumes should be incorporated into routine clinical evaluation. The utility of right atrial volume and function for monitoring cardiovascular risk and for guiding therapy may also prove to have an important clinical impact, especially in patients wit ...
... Abhayaratna et al (3) suggested that left atrial volumes should be incorporated into routine clinical evaluation. The utility of right atrial volume and function for monitoring cardiovascular risk and for guiding therapy may also prove to have an important clinical impact, especially in patients wit ...
Amplatzer device closure of Patent Ductus Arteriosus (PDA) : A case
... 2. Krichenko A, Benson LN, Burrows P, et al: Angiographic classification of the isolated persistently patent ductus arteriosus and implications for percutaneous catheter occlusion. Am J of Card 1989;63:877-80. ...
... 2. Krichenko A, Benson LN, Burrows P, et al: Angiographic classification of the isolated persistently patent ductus arteriosus and implications for percutaneous catheter occlusion. Am J of Card 1989;63:877-80. ...
Early trabeculation and closure of the interventricular foramen in
... first organ to begin mechanical function and this is initiated before structural organogenesis is complete. This raises the possibility that its early mechanical function affects its own morphogenesis [17]. Although morphogenesis of the heart varies between species the general steps during its devel ...
... first organ to begin mechanical function and this is initiated before structural organogenesis is complete. This raises the possibility that its early mechanical function affects its own morphogenesis [17]. Although morphogenesis of the heart varies between species the general steps during its devel ...
Right Atrial Anatomical Remodeling Affects Early Outcomes of
... The study protocol was approved by the Institutional Review Board of Severance Cardiovascular Hospital, in Seoul, Korea and it complied with the Declaration of Helsinki. All patients provided written informed consent. A total of 63 patients (50 men, 57±10 years) who underwent RFA of nonvalvular AF w ...
... The study protocol was approved by the Institutional Review Board of Severance Cardiovascular Hospital, in Seoul, Korea and it complied with the Declaration of Helsinki. All patients provided written informed consent. A total of 63 patients (50 men, 57±10 years) who underwent RFA of nonvalvular AF w ...
22. Heart
... about in the thoracic cavity, and prevents the heart from overfilling with blood. The pericardium is composed of two parts. The outer portion is a tough, dense connective tissue layer called the fibrous pericardium. This layer is attached to both the diaphragm and the base of the great vessels. The ...
... about in the thoracic cavity, and prevents the heart from overfilling with blood. The pericardium is composed of two parts. The outer portion is a tough, dense connective tissue layer called the fibrous pericardium. This layer is attached to both the diaphragm and the base of the great vessels. The ...
Internal atrial cardioversion in atrial fibrillation
... Electrical cardioversion is usually performed using the transthoracic technique with delivery of monophasic shocks at 200360 J and the efficacy results are 61-94%1,2. However as little as 4% of the current from an external shock effectively penetrates cardiac tissue, while the majority follows other ...
... Electrical cardioversion is usually performed using the transthoracic technique with delivery of monophasic shocks at 200360 J and the efficacy results are 61-94%1,2. However as little as 4% of the current from an external shock effectively penetrates cardiac tissue, while the majority follows other ...
Regional Mechanical Properties and Microstructure of Ovine Heart
... Figure 5.1: Cauchy stress-Green strain data for tissue specimens obtained from the left heart chambers in the fiber and cross fiber directions: (a) left ventricle, (b) left atrium, and (c) left atrial appendage (anterior regions: circle, and posterior regions: asterisk). ........................... ...
... Figure 5.1: Cauchy stress-Green strain data for tissue specimens obtained from the left heart chambers in the fiber and cross fiber directions: (a) left ventricle, (b) left atrium, and (c) left atrial appendage (anterior regions: circle, and posterior regions: asterisk). ........................... ...
Infrequently Performed Studies in Nuclear Medicine: Part 1
... delivered directly into the shunt tubing. However, the pressure from contrast may release particles in the shunt into the circulation and has the potential to cause pulmonary emboli. The radiation exposure will also be higher using this method than it would with the nuclear medicine study. The value ...
... delivered directly into the shunt tubing. However, the pressure from contrast may release particles in the shunt into the circulation and has the potential to cause pulmonary emboli. The radiation exposure will also be higher using this method than it would with the nuclear medicine study. The value ...
Proximal pulmonary emboli modify right ventricular ejection pattern A. Kuch-Wocial**, M. Szulc**
... A retrospective analysis of technically adequate echocardiographic tracings was performed in order to identify patients with RV systolic overload, defined as a tricuspid jet velocity of >2.8 m.s-1 measured with colour-guided continuous wave Doppler and averaged over five consecutive heart cycles. Th ...
... A retrospective analysis of technically adequate echocardiographic tracings was performed in order to identify patients with RV systolic overload, defined as a tricuspid jet velocity of >2.8 m.s-1 measured with colour-guided continuous wave Doppler and averaged over five consecutive heart cycles. Th ...
New insights in the assessment of right ventricular function
... pressure or volume overload from an incompetent valve or muscle pathology can affect the RV function. Coronary artery disease may also lead to RV dysfunction when the right coronary artery is occluded. Moreover, in congenital malformation of the heart, the RV may also be affected, particularly when ...
... pressure or volume overload from an incompetent valve or muscle pathology can affect the RV function. Coronary artery disease may also lead to RV dysfunction when the right coronary artery is occluded. Moreover, in congenital malformation of the heart, the RV may also be affected, particularly when ...
Atrial septal defect
![](https://commons.wikimedia.org/wiki/Special:FilePath/Asd-web.jpg?width=300)
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart. Normally, the atria are separated by a dividing wall, the interatrial septum. If this septum is defective or absent, then oxygen-rich blood can flow directly from the left side of the heart to mix with the oxygen-poor blood in the right side of the heart, or vice versa. This can lead to lower-than-normal oxygen levels in the arterial blood that supplies the brain, organs, and tissues. However, an ASD may not produce noticeable signs or symptoms, especially if the defect is small.A ""shunt"" is the presence of a net flow of blood through the defect, either from left to right or right to left. The amount of shunting present, if any, determines the hemodynamic significance of the ASD. A ""right-to-left-shunt"" typically poses the more dangerous scenario.During development of the fetus, the interatrial septum develops to separate the left and right atria. However, a hole in the septum called the foramen ovale, allows blood from the right atrium to enter the left atrium during fetal development. This opening allows blood to bypass the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A layer of tissue called the septum primum acts as a valve over the foramen ovale during fetal development. After birth, the pressure in the right side of the heart drops as the lungs open and begin working, causing the foramen ovale to close entirely. In approximately 25% of adults, the foramen ovale does not entirely seal. In these cases, any elevation of the pressure in the pulmonary circulatory system (due to pulmonary hypertension, temporarily while coughing, etc.) can cause the foramen ovale to remain open. This is known as a patent foramen ovale (PFO), which is a type of atrial septal defect.