Indications and Technique for Permanent Cardiac Pacemaker
... Electrical pacing of the heart has been utilized in human medicine for more than two decades. Cardiac pacing was used initially for cases of complete heart block that were unresponsive to medical therapy. During the 14-year period following the first human implant in 1958, an estimated 120,000 units ...
... Electrical pacing of the heart has been utilized in human medicine for more than two decades. Cardiac pacing was used initially for cases of complete heart block that were unresponsive to medical therapy. During the 14-year period following the first human implant in 1958, an estimated 120,000 units ...
Min-dose双源CT技术与三维超声心动图在主动脉瓣狭窄中的对比研究
... Background Accurate evaluation of coronary artery, aortic valve annulus diameter (AVAD) and cardiac function in patients with aortic valve disease is of great significance for surgical strategy. In this study we explored the preoperative evaluation of low-dose sequence (MinDose sequence) scan of dua ...
... Background Accurate evaluation of coronary artery, aortic valve annulus diameter (AVAD) and cardiac function in patients with aortic valve disease is of great significance for surgical strategy. In this study we explored the preoperative evaluation of low-dose sequence (MinDose sequence) scan of dua ...
Danish study of Non-Invasive - VBN
... Background: Coronary computed tomography angiography (CCTA) is an established method for ruling out coronary artery disease (CAD). Most patients referred for CCTA do not have CAD and only approximately 20–30 % of patients are subsequently referred to further testing by invasive coronary angiography ...
... Background: Coronary computed tomography angiography (CCTA) is an established method for ruling out coronary artery disease (CAD). Most patients referred for CCTA do not have CAD and only approximately 20–30 % of patients are subsequently referred to further testing by invasive coronary angiography ...
Regulation of Human Heart Rate
... right ventricle. If you listen closely, you can hear it “lub DUB…lub DUB…lub DUB.” Each lub is the atria (plural for atrium) contracting. Blood with a high concentration of carbon dioxide returning to the heart from the body enters the right atrium from the inferior and superior vena cava. The “lub” ...
... right ventricle. If you listen closely, you can hear it “lub DUB…lub DUB…lub DUB.” Each lub is the atria (plural for atrium) contracting. Blood with a high concentration of carbon dioxide returning to the heart from the body enters the right atrium from the inferior and superior vena cava. The “lub” ...
Total Anomalous Pulmonary Venous Return in Siblings
... tioned, 16 of the 24 patients died, so the overall fatality rate was 67%. However, the majority of the patients who died did not undergo surgery. The most common type of TAPVR was the infracardiac type, which was found in 12 cases (33%). One pair of siblings was diagnosed with Holt-Oram syndrome. Se ...
... tioned, 16 of the 24 patients died, so the overall fatality rate was 67%. However, the majority of the patients who died did not undergo surgery. The most common type of TAPVR was the infracardiac type, which was found in 12 cases (33%). One pair of siblings was diagnosed with Holt-Oram syndrome. Se ...
The Efficacy and Safety of Angio-Seal Percutaneous Femoral Artery
... in achieving hemostasis without any further complications. No serious vascular complications, including pseudoaneurysm, arteriovenous fistula, retroperitoneal hemorrhage, and surgical repairs, were observed in our study. However, a large-sample study reported that the rate of serious vascular compli ...
... in achieving hemostasis without any further complications. No serious vascular complications, including pseudoaneurysm, arteriovenous fistula, retroperitoneal hemorrhage, and surgical repairs, were observed in our study. However, a large-sample study reported that the rate of serious vascular compli ...
Cardiovascular Anatomy and Physiology
... left ventricle into the aorta over a given time period (L/min). At rest cardiac output is 4-8 L/min in an healthy adult. This can rise up to 25 litres/min during severe exercise. ...
... left ventricle into the aorta over a given time period (L/min). At rest cardiac output is 4-8 L/min in an healthy adult. This can rise up to 25 litres/min during severe exercise. ...
Lenient versus Strict Rate Control in Patients with Atrial Fibrillation
... ‡ The CHADS2 score is a measure of the risk of stroke in patients with atrial fibrillation, with scores ranging from 0 to 6 and higher scores indicating a greater risk.8 Congestive heart failure, hypertension, an age of 75 years or older, and diabetes are each assigned 1 point, and previous stroke o ...
... ‡ The CHADS2 score is a measure of the risk of stroke in patients with atrial fibrillation, with scores ranging from 0 to 6 and higher scores indicating a greater risk.8 Congestive heart failure, hypertension, an age of 75 years or older, and diabetes are each assigned 1 point, and previous stroke o ...
Staged approach for the management of atrial septal defect in the
... or by implanting a second device for the closure of the remaining shunt at a later stage. Our patient presented with several interrelated problems. There was a large ostium secundum ASD, a small LV with a modest left atrium, mild to moderate nonrheumatic mitral valve incompetence, ...
... or by implanting a second device for the closure of the remaining shunt at a later stage. Our patient presented with several interrelated problems. There was a large ostium secundum ASD, a small LV with a modest left atrium, mild to moderate nonrheumatic mitral valve incompetence, ...
The rationale of using calcium antagonists in the treatment of
... alcium antagonists (Ca-antagonists) have been used for more than two decades in the treatment of coronary heart disease. Their use was initially promoted for variant angina, but soon expanded to all forms of coronary heart disease entailing stable and unstable angina. On the basis of promising exper ...
... alcium antagonists (Ca-antagonists) have been used for more than two decades in the treatment of coronary heart disease. Their use was initially promoted for variant angina, but soon expanded to all forms of coronary heart disease entailing stable and unstable angina. On the basis of promising exper ...
Supraventricular tachycardia
... first year of life, in the teens and 20s and then in the 50s an accessory pathway capable of only retrograde and 60s. Whilst it is not certain why this pattern occurs, conduction. a plausible explanation is that in the first year of life the Several studies have suggested that the overall characteri ...
... first year of life, in the teens and 20s and then in the 50s an accessory pathway capable of only retrograde and 60s. Whilst it is not certain why this pattern occurs, conduction. a plausible explanation is that in the first year of life the Several studies have suggested that the overall characteri ...
IVC Filter-case-review
... Findings: There is a small pericardial effusion. The patient has a gastric Lap-Band in place. Accompanying tubing is noted extending out subcutaneously over the left anterior abdominal wall. IVC shows no evidence of any filter. The iliac and femoral vessels appear unremarkable. Small umbilical herni ...
... Findings: There is a small pericardial effusion. The patient has a gastric Lap-Band in place. Accompanying tubing is noted extending out subcutaneously over the left anterior abdominal wall. IVC shows no evidence of any filter. The iliac and femoral vessels appear unremarkable. Small umbilical herni ...
Cardiac Muscle and Mechanics I
... -CO and venous return can stay the same, but preload changes with increase in heart rate 3. end-diastolic volume increase due to less contractility (ischemia) a. less ejection from left ventricle b. more blood in ventricle after ejection, c. chamber gets larger, thus increase preload, with no change ...
... -CO and venous return can stay the same, but preload changes with increase in heart rate 3. end-diastolic volume increase due to less contractility (ischemia) a. less ejection from left ventricle b. more blood in ventricle after ejection, c. chamber gets larger, thus increase preload, with no change ...
22. Heart
... Pericarditis (per ́ i-kar-dı̄ ́t is; peri = around, kardia = heart, ites = inflammation) is an inflammation of the pericardium typically caused by viruses, bacteria, or fungi. Whatever the cause of pericarditis, the pericardium is inflamed. The inflammation causes an increase in capillary permeabi ...
... Pericarditis (per ́ i-kar-dı̄ ́t is; peri = around, kardia = heart, ites = inflammation) is an inflammation of the pericardium typically caused by viruses, bacteria, or fungi. Whatever the cause of pericarditis, the pericardium is inflamed. The inflammation causes an increase in capillary permeabi ...
Sudden cardiac death in children and adolescents: introduction and
... history of syncope, 2 of the 3 patients had syncope with exercise, and both died while exercising. Maron et al [8] reported in 1986 that hypertrophic cardiomyopathy (HCM) was the most common cause of SCD in young competitive athletes who were younger than 35 years of age; it accounted for about half ...
... history of syncope, 2 of the 3 patients had syncope with exercise, and both died while exercising. Maron et al [8] reported in 1986 that hypertrophic cardiomyopathy (HCM) was the most common cause of SCD in young competitive athletes who were younger than 35 years of age; it accounted for about half ...
Body, eye, and chorioallantoic vessel growth are not dependent on
... ⬎135 beats/min by HH 24 (Fig. 1A). Over this same developmental period, stroke volume increased fivefold from ⬃0.05 l/min at HH 16 to 0.25 l/min at HH 24 (Fig. 1B). Not surprisingly, then, cardiac output—the product of heart rate and stroke volume—increased dramatically from ⬃2 l/min at HH 16 to ...
... ⬎135 beats/min by HH 24 (Fig. 1A). Over this same developmental period, stroke volume increased fivefold from ⬃0.05 l/min at HH 16 to 0.25 l/min at HH 24 (Fig. 1B). Not surprisingly, then, cardiac output—the product of heart rate and stroke volume—increased dramatically from ⬃2 l/min at HH 16 to ...
Exercise for Patients with Coronary Artery Disease
... Ratings of perceived exertion (RPE) may also be used to monitor exercise intensity, with the goal of keeping the intensity at a moderate level. The exercise intensity should be below a level that provokes myocardial ischemia, significant arrhythmias, or symptoms of exercise intolerance as judged cl ...
... Ratings of perceived exertion (RPE) may also be used to monitor exercise intensity, with the goal of keeping the intensity at a moderate level. The exercise intensity should be below a level that provokes myocardial ischemia, significant arrhythmias, or symptoms of exercise intolerance as judged cl ...
2014 - Dr. Dhiren Shah
... Managing patients who have suspected severe aortic stenosis, left ventricular dysfunction, and low aortic valve gradients can be challenging. Although data for surgical intervention are not as robust for these patient subsets as for patients like Mr. A, several case series have suggested that surviv ...
... Managing patients who have suspected severe aortic stenosis, left ventricular dysfunction, and low aortic valve gradients can be challenging. Although data for surgical intervention are not as robust for these patient subsets as for patients like Mr. A, several case series have suggested that surviv ...
1 - UNM Hospitalist Wiki
... Patient is a 54 yo male with h/o hepatitis C and ESLD, on the transplant list. He is followed in the clinic regularly, but presents for an unscheduled visit due to a recent concerning episode. Per patient and partner (who witnessed event), patient was sitting on couch a few days ago, tired from rece ...
... Patient is a 54 yo male with h/o hepatitis C and ESLD, on the transplant list. He is followed in the clinic regularly, but presents for an unscheduled visit due to a recent concerning episode. Per patient and partner (who witnessed event), patient was sitting on couch a few days ago, tired from rece ...
Cost of heart failure management in Turkey: results
... For this purpose, the literature data related to the subject and HF guidelines (i.e., Turkish Society of Cardiology HF Guideline, European Society of Cardiology HF Guideline, American Heart Association HF Guideline) were examined thoroughly. The questionnaire was prepared comprising the subjects inc ...
... For this purpose, the literature data related to the subject and HF guidelines (i.e., Turkish Society of Cardiology HF Guideline, European Society of Cardiology HF Guideline, American Heart Association HF Guideline) were examined thoroughly. The questionnaire was prepared comprising the subjects inc ...
Tetralogy of Fallot | SpringerLink
... to thrive. Irritability and lethargy are rarely seen in patients with tetralogy of Fallot except in the setting of a hypercyanotic spell. Clubbing is also highly unusual in the modern era since newly diagnosed patients undergo surgical repair before clubbing has time to develop. The second heart sou ...
... to thrive. Irritability and lethargy are rarely seen in patients with tetralogy of Fallot except in the setting of a hypercyanotic spell. Clubbing is also highly unusual in the modern era since newly diagnosed patients undergo surgical repair before clubbing has time to develop. The second heart sou ...
Danish study of Non-Invasive testing in Coronary Artery Disease
... Background: Coronary computed tomography angiography (CCTA) is an established method for ruling out coronary artery disease (CAD). Most patients referred for CCTA do not have CAD and only approximately 20–30 % of patients are subsequently referred to further testing by invasive coronary angiography ...
... Background: Coronary computed tomography angiography (CCTA) is an established method for ruling out coronary artery disease (CAD). Most patients referred for CCTA do not have CAD and only approximately 20–30 % of patients are subsequently referred to further testing by invasive coronary angiography ...
Arrhythmias in ECGs - Auckland Heart Group
... Cardiac Electrophysiologist/Heart Rhythm Specialist Middlemore, Auckland City and Mercy Hospitals Auckland Heart Group ...
... Cardiac Electrophysiologist/Heart Rhythm Specialist Middlemore, Auckland City and Mercy Hospitals Auckland Heart Group ...
isolated hypoplasia of the right ventricle and tricuspid valve in siblings
... certain what was the fundamental cause of the obstruction to blood flow that raised the right atrial pressure above the left. It seems likely, however, that both the smallness of the tricuspid orifice and the smallness of the right ventricular cavity would tend to raise the right atrial pressure, th ...
... certain what was the fundamental cause of the obstruction to blood flow that raised the right atrial pressure above the left. It seems likely, however, that both the smallness of the tricuspid orifice and the smallness of the right ventricular cavity would tend to raise the right atrial pressure, th ...
Changes in heart rate during obstructive sleep apnoea
... 15 s. For the Valsalva manoeuvre, a positive pressure of 5 kPa was to be attained for the same period. Breath-holding lasted for 15 s. Several manoeuvres were performed before measurement was made in order to allow each subject to become accustomed to the procedure. A 24 h Halter electrocardiogram ( ...
... 15 s. For the Valsalva manoeuvre, a positive pressure of 5 kPa was to be attained for the same period. Breath-holding lasted for 15 s. Several manoeuvres were performed before measurement was made in order to allow each subject to become accustomed to the procedure. A 24 h Halter electrocardiogram ( ...
Cardiac surgery
Cardiovascular (heart) surgery is surgery on the heart or great vessels performed by cardiac surgeons. Frequently, it is done to treat complications of ischemic heart disease (for example, coronary artery bypass grafting), correct congenital heart disease, or treat valvular heart disease from various causes including endocarditis, rheumatic heart disease and atherosclerosis. It also includes heart transplantation.