Power Point CH 22
... • Impulses from the SA node travel to the left atrium and the atrioventricular (AV) node located in the floor of the right atrium. • Electrical activity then leaves the AV node into the atrioventricular (AV) bundle (bundle of His), which extends into the interventricular ...
... • Impulses from the SA node travel to the left atrium and the atrioventricular (AV) node located in the floor of the right atrium. • Electrical activity then leaves the AV node into the atrioventricular (AV) bundle (bundle of His), which extends into the interventricular ...
The cone reconstruction of the tricuspid valve in Ebstein`s anomaly
... those with significant cyanosis and polycythemia; (4) those with paradoxical embolism; and (5) those with tachycardia and accessory atrioventricular (AV) bundle. Five symptom-free patients did not undergo operations because they did not fulfill the above criteria. In addition, the newborn patients w ...
... those with significant cyanosis and polycythemia; (4) those with paradoxical embolism; and (5) those with tachycardia and accessory atrioventricular (AV) bundle. Five symptom-free patients did not undergo operations because they did not fulfill the above criteria. In addition, the newborn patients w ...
THE CARDIAC IMPULSE AND THE MOTION OF THE HEART
... flat on the angiocardiogram table. Studies were carried out on 26 patients, who were being investigated before possible cardiac surgery; impulse cardiograms and timed left ventricular angiocardiograms were available for analysis in each patient. The diagnosis was established by full clinical examina ...
... flat on the angiocardiogram table. Studies were carried out on 26 patients, who were being investigated before possible cardiac surgery; impulse cardiograms and timed left ventricular angiocardiograms were available for analysis in each patient. The diagnosis was established by full clinical examina ...
The Increase and Decrease Game When the left ventricle contracts
... 9. Narrowing of a blood vessel, which produces a ________in velocity of blood flow, causes a __________ in Reynolds number. 10. High cardiac output causes a ___________ in the velocity of the blow flow. 11. If the compliance of the veins decrease, there is a ____________ in the volume the veins can ...
... 9. Narrowing of a blood vessel, which produces a ________in velocity of blood flow, causes a __________ in Reynolds number. 10. High cardiac output causes a ___________ in the velocity of the blow flow. 11. If the compliance of the veins decrease, there is a ____________ in the volume the veins can ...
CARDIOVASCULAR PHYSIOLOGY • Electrical Conduction of the
... SINUS BRADYCARDIA: A heart rate slower than 60 SA-Nodal depolarizations per minute. "Sinus" indicates that the cardiac impulse is originating from the SA-Node as normal. SINUS TACHYCARDIA: Heart rate faster than 100 bpm, originating as normal from the SA-Node. o Tachycardia generally means you'll se ...
... SINUS BRADYCARDIA: A heart rate slower than 60 SA-Nodal depolarizations per minute. "Sinus" indicates that the cardiac impulse is originating from the SA-Node as normal. SINUS TACHYCARDIA: Heart rate faster than 100 bpm, originating as normal from the SA-Node. o Tachycardia generally means you'll se ...
Teaching Rounds in Cardiac Electrophysiology
... delivered at the PSMA eliminated AP conduction, although the ventricular activation time was not significantly earlier than the PSTA region. APs at this region have distinct ECG characteristics and are correlated with anatomic Section 3 (Figure 2), where a wide portion of atrial myocardium overrides ...
... delivered at the PSMA eliminated AP conduction, although the ventricular activation time was not significantly earlier than the PSTA region. APs at this region have distinct ECG characteristics and are correlated with anatomic Section 3 (Figure 2), where a wide portion of atrial myocardium overrides ...
Corrected Transposition of the Great Arteries
... atrioventricular valves, etc). The right-sided morphological mitral valve is supported by posteromedial and anterolateral papillary muscles. Overriding and/or straddling of the mitral valve can be seen in combination with a double outlet from the right ventricle. The left-sided morphologically right ...
... atrioventricular valves, etc). The right-sided morphological mitral valve is supported by posteromedial and anterolateral papillary muscles. Overriding and/or straddling of the mitral valve can be seen in combination with a double outlet from the right ventricle. The left-sided morphologically right ...
21-Development of cardiovascular system
... Ventricular septal defect (VSD) involving the membranous portion of the septum is the ...
... Ventricular septal defect (VSD) involving the membranous portion of the septum is the ...
Hypertension – The Silent Killer - Journal of Pre
... congestive heart failure. Hypertensive patients have anginal complaints or other signs of myocardial ischemia in the face of angiographically normal coronary arteries. In these cases, the imbalance between oxygen supply and demand is believed to be related to increased coronary resistance at the mic ...
... congestive heart failure. Hypertensive patients have anginal complaints or other signs of myocardial ischemia in the face of angiographically normal coronary arteries. In these cases, the imbalance between oxygen supply and demand is believed to be related to increased coronary resistance at the mic ...
Left Ventricular Assist Device Management in the ICU
... flow (Fig. 5) (13, 20, 28). The greatest determinant of the pump differential pressure is LV intracavitary pressure (22). Increased vascular tone (i.e., afterload) can also decrease pump flow (30, 31). In states of increased cardiac activity such as exercise, pump flow increases even at fixed speed ...
... flow (Fig. 5) (13, 20, 28). The greatest determinant of the pump differential pressure is LV intracavitary pressure (22). Increased vascular tone (i.e., afterload) can also decrease pump flow (30, 31). In states of increased cardiac activity such as exercise, pump flow increases even at fixed speed ...
using wave-intensity analysis Assessment of left ventricular diastolic
... until transmural pressure (PTM) is zero and that the smaller the LV end-systolic volume (VLVES), the greater the DS. Because of its ability to identify and measure upstream and downstream events and their interaction, we used wave-intensity analysis (WIA) (27, 39, 40), as we have done with respect t ...
... until transmural pressure (PTM) is zero and that the smaller the LV end-systolic volume (VLVES), the greater the DS. Because of its ability to identify and measure upstream and downstream events and their interaction, we used wave-intensity analysis (WIA) (27, 39, 40), as we have done with respect t ...
Levosimendan in Patients with Left Ventricular
... ardiac surgery with the use of cardiopulmonary bypass is a common procedure, with more than 1 million operations performed annually in the United States and Europe.1 Increasingly, patients who are referred for cardiac surgery are older and have multiple coexisting conditions, as compared with those ...
... ardiac surgery with the use of cardiopulmonary bypass is a common procedure, with more than 1 million operations performed annually in the United States and Europe.1 Increasingly, patients who are referred for cardiac surgery are older and have multiple coexisting conditions, as compared with those ...
Neoplasms involving the heart, their simulators
... could be far more useful than has been appreciated in the past. The problem has been that the electrocardiogram may be recorded when diagnosis is first considered, but subsequently electrocardiograms are not taken very frequently as the disease progresses. One study compared electrocardiographic fin ...
... could be far more useful than has been appreciated in the past. The problem has been that the electrocardiogram may be recorded when diagnosis is first considered, but subsequently electrocardiograms are not taken very frequently as the disease progresses. One study compared electrocardiographic fin ...
Cardiovascular System - Comed.uobaghdad.edu.iq
... The atrioventricular valves (AV valves) are composed of thin membranous cusps (fibrous flaps of tissue covered with endothelium), which hangdown in the ventricular cavities during diastole. After atrial contraction and just before ventricular contraction, the AV valves begin to close and the leaflet ...
... The atrioventricular valves (AV valves) are composed of thin membranous cusps (fibrous flaps of tissue covered with endothelium), which hangdown in the ventricular cavities during diastole. After atrial contraction and just before ventricular contraction, the AV valves begin to close and the leaflet ...
Keeping the Beat
... More than one shock felt in 24 hours B. The device has not fired in two days C. The ATP mode is used more than 3 times/day D. A beep sounds near electromagnetic field Answer: A ...
... More than one shock felt in 24 hours B. The device has not fired in two days C. The ATP mode is used more than 3 times/day D. A beep sounds near electromagnetic field Answer: A ...
view article - Portland Veterinary Specialists
... There are multiple potential causes of any collapse episode. Broadly, the collapses could be due to neurologic causes, causes related to the heart that directly compromise the pumping function (pericardial effusion, pulmonary hypertension), causes related to heart rate/rhythm, causes related to bloo ...
... There are multiple potential causes of any collapse episode. Broadly, the collapses could be due to neurologic causes, causes related to the heart that directly compromise the pumping function (pericardial effusion, pulmonary hypertension), causes related to heart rate/rhythm, causes related to bloo ...
Melody TPV Value Summary
... normal configuration to improve blood flow, it is usually not the final solution for these patients.1-3 Conduits are subject to progressive degeneration and will become narrowed or the valve within the conduit will begin to leak over time. Conduits can become calcified, or the patient may simply out ...
... normal configuration to improve blood flow, it is usually not the final solution for these patients.1-3 Conduits are subject to progressive degeneration and will become narrowed or the valve within the conduit will begin to leak over time. Conduits can become calcified, or the patient may simply out ...
Echocardiographic assessment of diastolic function Steve R. Ommen, MD
... Because of the tremendous impact of diastolic dysfunction on clinical morbidity and mortality, diastolic function screening should be a part of nearly every echocardiogram. No single parameter or Doppler pattern can be used in isolation to accurately assess diastolic function. Comprehensive Doppler ...
... Because of the tremendous impact of diastolic dysfunction on clinical morbidity and mortality, diastolic function screening should be a part of nearly every echocardiogram. No single parameter or Doppler pattern can be used in isolation to accurately assess diastolic function. Comprehensive Doppler ...
Table 1
... death for less severely affected patients [4]. However, because of the lack of reliable markers, risk stratification in the individual patient is still an unresolved issue. Amiodarone [5] and b-blocking agents [6e8] may have a role in reducing sudden death incidence in patients with DCM, but data ar ...
... death for less severely affected patients [4]. However, because of the lack of reliable markers, risk stratification in the individual patient is still an unresolved issue. Amiodarone [5] and b-blocking agents [6e8] may have a role in reducing sudden death incidence in patients with DCM, but data ar ...
Full Article - College of Intensive Care Medicine
... artery pressure, which then alters right ventricular loading conditions, an effect “buffered” by the intervening pulmonary vascular compliance. However, as discussed below, raising pulmonary artery pressure can become a factor when right ventricular output is limited. The large changes in ventricula ...
... artery pressure, which then alters right ventricular loading conditions, an effect “buffered” by the intervening pulmonary vascular compliance. However, as discussed below, raising pulmonary artery pressure can become a factor when right ventricular output is limited. The large changes in ventricula ...
Cardio Exam - Teddie Joe Snodgrass
... systolic BP between 140 and 145 mm Hg in persons 80 years and older if tolerated were discussed; hypertension in older adults is usually characterized by an elevated systolic BP and a normal or low diastolic BP due to age associated stiffening of the large arteries. Medications should be used as app ...
... systolic BP between 140 and 145 mm Hg in persons 80 years and older if tolerated were discussed; hypertension in older adults is usually characterized by an elevated systolic BP and a normal or low diastolic BP due to age associated stiffening of the large arteries. Medications should be used as app ...
Temporary right ventricular support following left ventricle assist
... at our institution. Among these, 18 patients (23%) suffered postimplant RVF treated by peripheral temporary right ventricular support. Aetiology of heart failure was ischaemic in 12 (67%) and dilated cardiomyopathy in 6 (33%) patients. The preimplant RV risk score averaged 5.1 ± 0.59. Ten patients w ...
... at our institution. Among these, 18 patients (23%) suffered postimplant RVF treated by peripheral temporary right ventricular support. Aetiology of heart failure was ischaemic in 12 (67%) and dilated cardiomyopathy in 6 (33%) patients. The preimplant RV risk score averaged 5.1 ± 0.59. Ten patients w ...
High Premature Atrial Complex Loads Indicate a High Central Aortic
... We found that central aortic AIx rather than arterial PWV was significantly correlated with high PAC loads in low-risk young outpatients. Other studies have shown that aortic stiffness is a risk factor for cardiovascular events8,9 and an independent predictor of all-cause and cardiovascular mortalit ...
... We found that central aortic AIx rather than arterial PWV was significantly correlated with high PAC loads in low-risk young outpatients. Other studies have shown that aortic stiffness is a risk factor for cardiovascular events8,9 and an independent predictor of all-cause and cardiovascular mortalit ...
Swissregard.ch – a prospective registry on sudden death and
... problem. The determination of the proportion of cases that could have been prevented by an appropriate screening will be valuable in the debate of a tailored national pre-participation screening program. Furthermore, the data may help to develop preventive measures for sudden death in sports. From a ...
... problem. The determination of the proportion of cases that could have been prevented by an appropriate screening will be valuable in the debate of a tailored national pre-participation screening program. Furthermore, the data may help to develop preventive measures for sudden death in sports. From a ...
Full paper
... Objectives: Atrial fibrillation is the most common form of arrhythmia in mitral valve disease. Radiofrequency ablation is most commonly used for atrial fibrillation ablation during mitral valve surgery. Methods: This prospective study evaluated the midterm outcomes of intraoperative radiofrequency a ...
... Objectives: Atrial fibrillation is the most common form of arrhythmia in mitral valve disease. Radiofrequency ablation is most commonly used for atrial fibrillation ablation during mitral valve surgery. Methods: This prospective study evaluated the midterm outcomes of intraoperative radiofrequency a ...
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.