Angiotensin Receptor Blockades Effect on Peripheral Muscular and
... blockades (ARBs) on peripheral and central arterial stiffness (brachial to ankle, ba-PWV; carotid to femoral, cf-PWV, respectively), using a systematic review to assess the clinical arterial stiffness issues. Methods: For our study, we searched the PubMed and Cochrane Library databases from inceptio ...
... blockades (ARBs) on peripheral and central arterial stiffness (brachial to ankle, ba-PWV; carotid to femoral, cf-PWV, respectively), using a systematic review to assess the clinical arterial stiffness issues. Methods: For our study, we searched the PubMed and Cochrane Library databases from inceptio ...
venous return and cardiac filling in varanid lizards
... where the main pulmonary vein empties into the left atrium (Meinertz, 1952, 1966). Varanid lizards, unlike most other reptiles or the amphibians,- may well place unusual demands on mechanisms responsible for ventricular filling, since cardiac output, heart rate and systemic arterial pressures are al ...
... where the main pulmonary vein empties into the left atrium (Meinertz, 1952, 1966). Varanid lizards, unlike most other reptiles or the amphibians,- may well place unusual demands on mechanisms responsible for ventricular filling, since cardiac output, heart rate and systemic arterial pressures are al ...
maximum cardiac performance of rainbow trout (oncorhynchus
... loads were subambient and there were no significant effects of temperature on the filling pressure required to generate routine cardiac output (Table 1). Increasing the filling pressure generated a typical Starling curve for stroke volume at all temperatures. However, acclimation temperature signifi ...
... loads were subambient and there were no significant effects of temperature on the filling pressure required to generate routine cardiac output (Table 1). Increasing the filling pressure generated a typical Starling curve for stroke volume at all temperatures. However, acclimation temperature signifi ...
Does increased troponin-T in patients undergoing percutaneous
... accurate. Several potential explanations may be offered. Increased CK or CK-MB reflects small zones of necrosis. Microscopic zones of necrosis or microinfarcts may provide a nidus of ventricular ...
... accurate. Several potential explanations may be offered. Increased CK or CK-MB reflects small zones of necrosis. Microscopic zones of necrosis or microinfarcts may provide a nidus of ventricular ...
heart and neck vessel assessment
... and travel throughout the cardiac conduction circuit, can be detected on the surface of the skin. This electrical activity can be measured and recorded by electrocardiography (ECG, aka EKG), which records the depolarization and repolarization of the cardiac muscle. The phases of the ECG are known as ...
... and travel throughout the cardiac conduction circuit, can be detected on the surface of the skin. This electrical activity can be measured and recorded by electrocardiography (ECG, aka EKG), which records the depolarization and repolarization of the cardiac muscle. The phases of the ECG are known as ...
Mechanism of Ventricular Fibrillation in Hypothermia
... • Two general theories of cardiac fibrillation currently prevail: the circus movement theory of Garrey1 and Lewis,2 and the ectopic focus theory of Sherf3 and Prinzmetal.4 Surprisingly, little systematic work has been done to establish whether either of these theories applies to the cardiac fibrilla ...
... • Two general theories of cardiac fibrillation currently prevail: the circus movement theory of Garrey1 and Lewis,2 and the ectopic focus theory of Sherf3 and Prinzmetal.4 Surprisingly, little systematic work has been done to establish whether either of these theories applies to the cardiac fibrilla ...
Total Renin-angiotensin – aldosterone system (Raas) Blockade
... wall of the afferent arteriole which is contiguous with the macula densa portion of the same nephron, converts the Angiotensinogen, an alpha 2 globulin of hepatic origin, to Angiotensin I (AI), a deca-peptide. This inactive substance AI is then converted to Angiotensin II (AII), an octopeptide by an ...
... wall of the afferent arteriole which is contiguous with the macula densa portion of the same nephron, converts the Angiotensinogen, an alpha 2 globulin of hepatic origin, to Angiotensin I (AI), a deca-peptide. This inactive substance AI is then converted to Angiotensin II (AII), an octopeptide by an ...
Effect of Rate on Left Ventricular Volumes and Ejection Fraction
... SUMMARY Resting left ventricular (LV) function was evaluated in 22 patients with permanent ventricular pacemakers. LVejection fraction and volume indexes were determined by gated blood pool scintigraphy at ventricular pacing rates of 50-100 beats/min. In patients with a normal heart size, increases ...
... SUMMARY Resting left ventricular (LV) function was evaluated in 22 patients with permanent ventricular pacemakers. LVejection fraction and volume indexes were determined by gated blood pool scintigraphy at ventricular pacing rates of 50-100 beats/min. In patients with a normal heart size, increases ...
Echocardiographic assessment of pulmonary
... echocardiography if PH is suspected. Further assessment of right ventricular function should be considered when one or more of these abnormalities are identified. We have developed a protocol to describe how various echocardiographic views and measurements may be used during the initial examination ...
... echocardiography if PH is suspected. Further assessment of right ventricular function should be considered when one or more of these abnormalities are identified. We have developed a protocol to describe how various echocardiographic views and measurements may be used during the initial examination ...
Ann Intern Med. 2003
... atrial fibrillation, and more than 90% had had their qualifying episode within the previous 6 weeks. In more than two thirds of patients, the qualifying episode lasted at least 2 days. The average patient age was 70 years. Sixty-one percent of patients were men, and 89% were white. Seventy-one perce ...
... atrial fibrillation, and more than 90% had had their qualifying episode within the previous 6 weeks. In more than two thirds of patients, the qualifying episode lasted at least 2 days. The average patient age was 70 years. Sixty-one percent of patients were men, and 89% were white. Seventy-one perce ...
Sino-Atrial Exit Block (SA Block):
... Most MI's are located in the left ventricle. In the setting of a proximal right coronary artery occlusion, however, up to 50% may also have a component of right ventricular infarction as well. Right-sided chest leads are necessary to recognize RV MI. In general, the more leads of the 12-lead ECG wit ...
... Most MI's are located in the left ventricle. In the setting of a proximal right coronary artery occlusion, however, up to 50% may also have a component of right ventricular infarction as well. Right-sided chest leads are necessary to recognize RV MI. In general, the more leads of the 12-lead ECG wit ...
Management of New Detected Atrial Fibrillation
... atrial fibrillation, and more than 90% had had their qualifying episode within the previous 6 weeks. In more than two thirds of patients, the qualifying episode lasted at least 2 days. The average patient age was 70 years. Sixty-one percent of patients were men, and 89% were white. Seventy-one perce ...
... atrial fibrillation, and more than 90% had had their qualifying episode within the previous 6 weeks. In more than two thirds of patients, the qualifying episode lasted at least 2 days. The average patient age was 70 years. Sixty-one percent of patients were men, and 89% were white. Seventy-one perce ...
... acquired or congenital heart disease, CHAM has pioneered some of the most innovative advancements in the field. The highly specialized, multidisciplinary team at CHAM performed the first hybrid procedure in the state of New York and the first pediatric heart transplant in the Bronx. For more than 50 ...
Etiology,Natural History,Pathophysiology,Symptoms,Signs of Mitral
... for repair who have had recurrent episodes of embolic events on adequate anticoagulation. ACC/AHA Class III ◦ Patients with NYHA functional Class I-IV symptoms and mild MS. ...
... for repair who have had recurrent episodes of embolic events on adequate anticoagulation. ACC/AHA Class III ◦ Patients with NYHA functional Class I-IV symptoms and mild MS. ...
Evaluation of the Right Ventricular Function in Hypertrophic
... myocardial hypertrophy of the left ventricle (LV) (Elliott et al. 2008). Tissue Doppler imaging (TDI), strain and strain rate (SR) imaging are relatively newly developed echocardiographic techniques that allow a better assessment of regional myocardial function. Several studies have suggested that T ...
... myocardial hypertrophy of the left ventricle (LV) (Elliott et al. 2008). Tissue Doppler imaging (TDI), strain and strain rate (SR) imaging are relatively newly developed echocardiographic techniques that allow a better assessment of regional myocardial function. Several studies have suggested that T ...
Obesity and the Risk of Heart Failure
... risk factor for heart failure. It is unclear whether overweight and lesser degrees of obesity also pose a risk. Methods We investigated the relation between the body-mass index (the weight in kilograms divided by the square of the height in meters) and the incidence of heart failure among 5881 parti ...
... risk factor for heart failure. It is unclear whether overweight and lesser degrees of obesity also pose a risk. Methods We investigated the relation between the body-mass index (the weight in kilograms divided by the square of the height in meters) and the incidence of heart failure among 5881 parti ...
Ablation vs. drug use for atrial fibrillation
... structural heart disease. Catheter ablation is recognized in the latest ACC/AHA/ESC guidelines as a valid second-line option in patients who have failed or were intolerant of first-line antiarrhythmic therapy. In the absence of new antiarrhythmics with an improved benefit/risk profile, it could become ...
... structural heart disease. Catheter ablation is recognized in the latest ACC/AHA/ESC guidelines as a valid second-line option in patients who have failed or were intolerant of first-line antiarrhythmic therapy. In the absence of new antiarrhythmics with an improved benefit/risk profile, it could become ...
Off-Pump Positioning of a Conventional Aortic Valve Prosthesis via
... feasibility of implanting an unmodified mechanical aortic valve (AoV) in the off pump, beating heart using the Universal Cardiac Introducer (UCI) attached to the LV apex. Methods: In 6 pigs, the LV apex was exposed via a median sternotomy. The UCI was attached to the apex. A 12mm punching-tool (Punc ...
... feasibility of implanting an unmodified mechanical aortic valve (AoV) in the off pump, beating heart using the Universal Cardiac Introducer (UCI) attached to the LV apex. Methods: In 6 pigs, the LV apex was exposed via a median sternotomy. The UCI was attached to the apex. A 12mm punching-tool (Punc ...
IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS)
... The study revealed that continuous consumption of potash (kanwa) resulted to some varying degree of distortion and disruption of the cytostructure of the heart, as compared to the control group which show normal cellular and architectural integrity. The result obtained in this experiment is probably ...
... The study revealed that continuous consumption of potash (kanwa) resulted to some varying degree of distortion and disruption of the cytostructure of the heart, as compared to the control group which show normal cellular and architectural integrity. The result obtained in this experiment is probably ...
Heart Development - Gene Ontology Consortium
... < development of the coronary vessels < coronary vessel vasculogenesis % formation of an epithelial tube < coronary vessel angiogenesis % angiogenesis ...
... < development of the coronary vessels < coronary vessel vasculogenesis % formation of an epithelial tube < coronary vessel angiogenesis % angiogenesis ...
Long-term efficacy of transcatheter closure of ventricular septal
... with cardiogenic shock due to VSD is as high as 67% within 48 hours and 100% within 30 days12. It is well documented that surgery in the early stage is favourable for survival13. However, the mortality rate is approximately 50% with surgery performed within three weeks and as high as 38% when perfor ...
... with cardiogenic shock due to VSD is as high as 67% within 48 hours and 100% within 30 days12. It is well documented that surgery in the early stage is favourable for survival13. However, the mortality rate is approximately 50% with surgery performed within three weeks and as high as 38% when perfor ...
Heart Failure and Circulatory Shock
... cells as well as in the adrenal gland, suggesting that these cells are capable of both producing aldosterone and responding to it.8,9 Thus, the progression of heart failure may be augmented by aldosterone-mediated vascular remodeling in the heart and other organs. In the recent international (Random ...
... cells as well as in the adrenal gland, suggesting that these cells are capable of both producing aldosterone and responding to it.8,9 Thus, the progression of heart failure may be augmented by aldosterone-mediated vascular remodeling in the heart and other organs. In the recent international (Random ...
PACED Sudden Cardiac Arrest Prevention Powerpoint Seminar v2
... Any deaths occurring during or after intense physical activity? Running, swimming, cycling, soccer, hockey. ...
... Any deaths occurring during or after intense physical activity? Running, swimming, cycling, soccer, hockey. ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.