The Anatomic Basis for High-Frequency Components in
... our own work involving over 2,000 dissections and several autopsy studies reported by Saphir.19 The right ventricular upper limit of normal was assumed to be 50 g, while the left ventricle and septum were considered enlarged if they exceeded 180 g. The all-male groups represented in the bar graph (f ...
... our own work involving over 2,000 dissections and several autopsy studies reported by Saphir.19 The right ventricular upper limit of normal was assumed to be 50 g, while the left ventricle and septum were considered enlarged if they exceeded 180 g. The all-male groups represented in the bar graph (f ...
Left Ventricular Dysfunction Induced by Monomorphic Ventricular
... suggests that some patients diagnosed with ventricular arrhythmia secondary to dilated cardiomyopathy may actually have had the opposite problem: primitive ventricular arrhythmia—frequent premature beats in this case—able to induce ventricular dysfunction in a healthy heart. With regard to the causa ...
... suggests that some patients diagnosed with ventricular arrhythmia secondary to dilated cardiomyopathy may actually have had the opposite problem: primitive ventricular arrhythmia—frequent premature beats in this case—able to induce ventricular dysfunction in a healthy heart. With regard to the causa ...
Reduction of QRS duration following pulmonary valve replacement
... length in any lead on a standard ECG. Although this may have influenced absolute values of QRS, it is unlikely to have biased the results, as it is the change from preoperative to post-operative rather than the absolute value of the QRS that was considered. The findings of this study are, at least to ...
... length in any lead on a standard ECG. Although this may have influenced absolute values of QRS, it is unlikely to have biased the results, as it is the change from preoperative to post-operative rather than the absolute value of the QRS that was considered. The findings of this study are, at least to ...
Heart Failure
... It seems likely that the mechanisms of benefit include antiarrhythmic effects, slowing or reversing the detrimental ventricular remodeling caused by sympathetic stimulation, Up-regulation of β 1 ...
... It seems likely that the mechanisms of benefit include antiarrhythmic effects, slowing or reversing the detrimental ventricular remodeling caused by sympathetic stimulation, Up-regulation of β 1 ...
BACK TO GAME
... Cardiac output (CO) is a measurement of the amount of blood pumped by the ________ in ...
... Cardiac output (CO) is a measurement of the amount of blood pumped by the ________ in ...
Echocardiographic Features of Atrial Septal Defect
... congenital left-to-right shunts (ventricular septal defect and patent ductus arteriosus), patients with uncomplicated right ventricular pressure overload (pulmonic stenosis and pulmonary hypertension), and patients with pulmonary hypertension complicated by tricuspid regurgitation. Two echocardiogra ...
... congenital left-to-right shunts (ventricular septal defect and patent ductus arteriosus), patients with uncomplicated right ventricular pressure overload (pulmonic stenosis and pulmonary hypertension), and patients with pulmonary hypertension complicated by tricuspid regurgitation. Two echocardiogra ...
Сardiac arrhythmias 1. The consequences of continued attack of
... a) extend the time of diastolic filling of the heart, significant stretching of muscle fibers at the end of diastole by large amount of blood, intensive work of the heart to expel excess blood volume and, as a consequence, hypertrophy and dilatation of the ventricles; + b) short diastole with reduce ...
... a) extend the time of diastolic filling of the heart, significant stretching of muscle fibers at the end of diastole by large amount of blood, intensive work of the heart to expel excess blood volume and, as a consequence, hypertrophy and dilatation of the ventricles; + b) short diastole with reduce ...
Clinical Application of Echocardiography
... in the evaluation of such common clinical problems. The recommendations concerning the use of ...
... in the evaluation of such common clinical problems. The recommendations concerning the use of ...
Dissection of the Sheep Heart and Human Heart BIOL 2402
... mediastinum region (central region of the thoracic cavity), between the lungs, and behind the sternum. The heart is a hollow organ, containing 4 chambers. At least one blood vessel attaches to each of the chambers. The heart valves keep the blood moving forward because backward flow closes the valve ...
... mediastinum region (central region of the thoracic cavity), between the lungs, and behind the sternum. The heart is a hollow organ, containing 4 chambers. At least one blood vessel attaches to each of the chambers. The heart valves keep the blood moving forward because backward flow closes the valve ...
Nandrolone- induced myocardial infarction in a professional soccer
... were combined with endurance training7. In addition, chronic high dose androgenic steroid administration produced a decrease in myocardial contractile reserve to beta-adrenoceptor stimulation8. In fatal and nonfatal myocardial infarctions patent coronary arteries were proven frequently. Besides the ...
... were combined with endurance training7. In addition, chronic high dose androgenic steroid administration produced a decrease in myocardial contractile reserve to beta-adrenoceptor stimulation8. In fatal and nonfatal myocardial infarctions patent coronary arteries were proven frequently. Besides the ...
WPW Syndrome – ECG Manifestations
... in WPW syndrome. The ECG shows a wide QRS tachycardia that is very fast, has broad complexes with varying QRS durations (normal narrow and with varying degrees of fusion) and is irregular. Rarely, due to very high ventricular rates, it can degenerate in to ventricular fibrillation and cause sudden d ...
... in WPW syndrome. The ECG shows a wide QRS tachycardia that is very fast, has broad complexes with varying QRS durations (normal narrow and with varying degrees of fusion) and is irregular. Rarely, due to very high ventricular rates, it can degenerate in to ventricular fibrillation and cause sudden d ...
Obvious or Subclinical Right Ventricular Dysfunction in Diabetes
... Medical and Research Center or were amongst the hospital stuff. The control group consisted of 22 healthy individuals (9 men and 13 women). All the diabetic patients enrolled in this study were asymptomatic, without any clinical evidence of either systolic or diastolic heart failure. The control sub ...
... Medical and Research Center or were amongst the hospital stuff. The control group consisted of 22 healthy individuals (9 men and 13 women). All the diabetic patients enrolled in this study were asymptomatic, without any clinical evidence of either systolic or diastolic heart failure. The control sub ...
Valvular Heart Disease: A Primer for the Clinical Pharmacist
... Stress tests can be very useful to objectively assess whether patients still have intact functional capacity, especially if there is concern that patients have reduced their exercise gradually without recognizing their subclinical cardiac decompensation. However, stress testing should not be perform ...
... Stress tests can be very useful to objectively assess whether patients still have intact functional capacity, especially if there is concern that patients have reduced their exercise gradually without recognizing their subclinical cardiac decompensation. However, stress testing should not be perform ...
No Slide Title
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
Current Status of the Treatment of Complete Heart Block
... six an electrode wire broke; two developed severe infection around the pulse generator; one experienced the breaking of a test lead wire (pig-tail) and another a dislodged m\ocardial electrode. In almost every instance, the dipolar catheter was inserted as a preliminary procedure for the protection ...
... six an electrode wire broke; two developed severe infection around the pulse generator; one experienced the breaking of a test lead wire (pig-tail) and another a dislodged m\ocardial electrode. In almost every instance, the dipolar catheter was inserted as a preliminary procedure for the protection ...
A Cineradiographic Study of the Snake Heart
... (crocodiles excepted) is the incomplete intraventricular septum. FolloAving the opening of the right intraventricular valves, the contrast medium sharply depicted the ridges in the right part of the ventricle (fig. 1, D). At the end of the atrial contraction the ventricle was completely filled with ...
... (crocodiles excepted) is the incomplete intraventricular septum. FolloAving the opening of the right intraventricular valves, the contrast medium sharply depicted the ridges in the right part of the ventricle (fig. 1, D). At the end of the atrial contraction the ventricle was completely filled with ...
Changes in ventricular volume, wall thickness and wall stress during
... The Studies of Left Ventricular Dysfunction (SOLVD) offered an opportunity to study the long-term changes in cardiac function occurring in patients with long+Xandii, severe ventricular dysfwrction. Recently, the changes in left ventricular function evidenced in SOLVD in patients with congestive hear ...
... The Studies of Left Ventricular Dysfunction (SOLVD) offered an opportunity to study the long-term changes in cardiac function occurring in patients with long+Xandii, severe ventricular dysfwrction. Recently, the changes in left ventricular function evidenced in SOLVD in patients with congestive hear ...
following acute myocardial infarction Prediction of sudden
... largely unresolved question is what are the precipitating/predisposing factors that cause an AMI survivor, who may remain stable for months or even years following the initial ischaemic event, to become electrically unstable and develop malignant arrhythmias? Figure 1 shows some of the factors that ...
... largely unresolved question is what are the precipitating/predisposing factors that cause an AMI survivor, who may remain stable for months or even years following the initial ischaemic event, to become electrically unstable and develop malignant arrhythmias? Figure 1 shows some of the factors that ...
Pregnancy and Heart Disease
... There may be an abrupt decrease in afterload as the baby is delivered, and hypovolemia from blood loss can cause hypoxia, syncope, and sudden death. Vagal responses to pain may also be lifethreatening. Death may also occur from pulmonary embolism or in situ pulmonary infarction ...
... There may be an abrupt decrease in afterload as the baby is delivered, and hypovolemia from blood loss can cause hypoxia, syncope, and sudden death. Vagal responses to pain may also be lifethreatening. Death may also occur from pulmonary embolism or in situ pulmonary infarction ...
The Functional Anatomy of Ventricular Contraction
... in a clockwise direction (viewed from the apex) toward the apex. At first glance this arrangement should produce rotation of the chambers during systole. However, if sections are removed from the full thickness of the ventricular wall, the trabeculae carnae on the endocardial surface are seen spiral ...
... in a clockwise direction (viewed from the apex) toward the apex. At first glance this arrangement should produce rotation of the chambers during systole. However, if sections are removed from the full thickness of the ventricular wall, the trabeculae carnae on the endocardial surface are seen spiral ...
Hemodynamic Effects of Heart Rate in Aortic
... normal forward cardiac output at their resting sinus rate, ranging from 4.4 to 5.7 liters/min, and in one subject (no. 7) it was slightly elevated at 7.4 liters/min. With atrial pacing the forward cardiac output increased in seven and fell minimally in subject no. 7. The mean increased from 5.3 to 7 ...
... normal forward cardiac output at their resting sinus rate, ranging from 4.4 to 5.7 liters/min, and in one subject (no. 7) it was slightly elevated at 7.4 liters/min. With atrial pacing the forward cardiac output increased in seven and fell minimally in subject no. 7. The mean increased from 5.3 to 7 ...
cardiac imaging planes
... initial localizing sequence in 3 planes plan direct axial, coronal & sagittal T1 or T2 W of the ...
... initial localizing sequence in 3 planes plan direct axial, coronal & sagittal T1 or T2 W of the ...
Congenital Heart Diseases
... How to Approach to CHD - as a Clinician Does this baby have a CHD? – Which baby should be referred to pediatric cardiologist – The urgency with which that referral should be made – If not, what tests and in what order to make diagnosis ...
... How to Approach to CHD - as a Clinician Does this baby have a CHD? – Which baby should be referred to pediatric cardiologist – The urgency with which that referral should be made – If not, what tests and in what order to make diagnosis ...
review of the diagnosis and treatment of diastolic heart failure
... and diastolic blood pressure, (2) to restore and maintain sinus rhythm in symptomatic patients with atrial fibrillation and atrial flutter, and (3) to control congestion and fluid overload. The purpose of this paper is to provide a review of the diagnosis and treatment of diastolic heart failure. ...
... and diastolic blood pressure, (2) to restore and maintain sinus rhythm in symptomatic patients with atrial fibrillation and atrial flutter, and (3) to control congestion and fluid overload. The purpose of this paper is to provide a review of the diagnosis and treatment of diastolic heart failure. ...
modification of ventricular gallop rhythm induced by - Heart
... pericarditis following successful operative therapy. Available evidence indicates that this latter sound represents an altered ventricular gallop. These observations are consistent with the thesis that factors related to pressure volume characteristics of the heart are important not only in determin ...
... pericarditis following successful operative therapy. Available evidence indicates that this latter sound represents an altered ventricular gallop. These observations are consistent with the thesis that factors related to pressure volume characteristics of the heart are important not only in determin ...
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.