ARRYTHMIAS AND CONDUCTION DEFECTS IN ECG
... so rapidly that very little or no blood at all is pumped because there is not enough time between contractions for the ventricles to fill. When VF occurs, a well-placed electrical shock across the chest may be life saving. The shock, known as defibrillation, neutralizes all the abnormal electric ...
... so rapidly that very little or no blood at all is pumped because there is not enough time between contractions for the ventricles to fill. When VF occurs, a well-placed electrical shock across the chest may be life saving. The shock, known as defibrillation, neutralizes all the abnormal electric ...
Effect of Cardiac Rehabilitation on Cardiovascular Events after
... attended CR and those who did not (CR group [CRG] and NCR group [NCRG], respectively). Attendance was determined using the CR data in the CHGH database. In the CRG, CR attendance was defined as attendance of at least 1 outpatient session within 3 months of the index CABG. All patients who attended C ...
... attended CR and those who did not (CR group [CRG] and NCR group [NCRG], respectively). Attendance was determined using the CR data in the CHGH database. In the CRG, CR attendance was defined as attendance of at least 1 outpatient session within 3 months of the index CABG. All patients who attended C ...
Cardiac Resynchronization Therapy
... (top tracing), along with a rise in systolic arterial pressure and widening of the arterial pulse pressure. The latter correlates with increased cardiac output. Other studies revealed that this effect occurs with no increase in metabolic demand by the heart, but rather an improvement in chamber effi ...
... (top tracing), along with a rise in systolic arterial pressure and widening of the arterial pulse pressure. The latter correlates with increased cardiac output. Other studies revealed that this effect occurs with no increase in metabolic demand by the heart, but rather an improvement in chamber effi ...
failure of the right ventricle
... the right ventricle is based on a variety of clinical and pathological observations. In the first place, she suffered from right ventricular failure for at least two years, during which time personal observation revealed gross engorgement of the neck veins. Her relative lack of dyspncea and orthopnc ...
... the right ventricle is based on a variety of clinical and pathological observations. In the first place, she suffered from right ventricular failure for at least two years, during which time personal observation revealed gross engorgement of the neck veins. Her relative lack of dyspncea and orthopnc ...
PDF - 308 KB
... structure–function relationships of the encoded proteins in vivo have been gained by correlation of particular aminoacid mutations with the associated cardiac malformations. Most genetic studies in model organisms involve homozygous loss-of-function mutations, which frequently result in severe pheno ...
... structure–function relationships of the encoded proteins in vivo have been gained by correlation of particular aminoacid mutations with the associated cardiac malformations. Most genetic studies in model organisms involve homozygous loss-of-function mutations, which frequently result in severe pheno ...
Heart Murmur Detection using Fractal Analysis
... The third heart sound is a rare extra sound, heard just after S2 as shown in figure-3. It occurs at the beginning of diastole which gives it the name proto-diastolic or ventricular gallop [4]. This sound may appear as normal in people below 40 years of age and athletes but when detected in old age, ...
... The third heart sound is a rare extra sound, heard just after S2 as shown in figure-3. It occurs at the beginning of diastole which gives it the name proto-diastolic or ventricular gallop [4]. This sound may appear as normal in people below 40 years of age and athletes but when detected in old age, ...
Circulatory SHOCK
... Obstructive Shock • CO reduced by vascular obstruction: – Obstruction of Venous return (vena cava syndrome – usually neoplasms) – Compression of the heart (pericardial tamponade*) – Outflow from heart (Massive pulmonary embolism, aortic dissection) ...
... Obstructive Shock • CO reduced by vascular obstruction: – Obstruction of Venous return (vena cava syndrome – usually neoplasms) – Compression of the heart (pericardial tamponade*) – Outflow from heart (Massive pulmonary embolism, aortic dissection) ...
AHA Science Advisory
... inverse relation between moderate alcoholic beverage consumption and CHD.2 A consistent coronary protective effect has been observed for consumption of 1 to 2 drinks per day of an alcohol-containing beverage; however, higher intakes are associated with increased total mortality.3,4 Although ecologic ...
... inverse relation between moderate alcoholic beverage consumption and CHD.2 A consistent coronary protective effect has been observed for consumption of 1 to 2 drinks per day of an alcohol-containing beverage; however, higher intakes are associated with increased total mortality.3,4 Although ecologic ...
Subclinical left ventricle dysfunction revealed by echocardiography
... Infantile hemangiomas consist a frequent childhood tumor and have been associated with hemodynamic complications. A 2week-old female neonate presented to our clinic due to a large neck hemangioma. Although the neonate was hemodynamically stable and no apparent clinical signs of heart failure were pr ...
... Infantile hemangiomas consist a frequent childhood tumor and have been associated with hemodynamic complications. A 2week-old female neonate presented to our clinic due to a large neck hemangioma. Although the neonate was hemodynamically stable and no apparent clinical signs of heart failure were pr ...
Pressure – Volume Relationships
... pressure (CVP) and right atrial pressure (RAP). – RAP responds to increasing venous return that must be matched by an increase in cardiac function. – That is, ventricular function must increase to increase output and bring venous return to equilibrium. – For example, increasing blood volume shifts t ...
... pressure (CVP) and right atrial pressure (RAP). – RAP responds to increasing venous return that must be matched by an increase in cardiac function. – That is, ventricular function must increase to increase output and bring venous return to equilibrium. – For example, increasing blood volume shifts t ...
The percutaneous approach to mitral valve repair
... San Raffaele Hospital in Milan, Italy, has hands-on experience of both surgical and transcatheter procedures. Almost every day he faces the challenge of finding the right candidates for the MitraClip at a time when the procedure holds great promise but surgery remains the gold standard. Despite the ...
... San Raffaele Hospital in Milan, Italy, has hands-on experience of both surgical and transcatheter procedures. Almost every day he faces the challenge of finding the right candidates for the MitraClip at a time when the procedure holds great promise but surgery remains the gold standard. Despite the ...
The American Red Cross states that over 350,000 people will suffer
... The American Red Cross states that over 350,000 people will suffer from Sudden Cardiac Arrest or SCA this year alone; it is one of the leading causes of death in the US. Most SCAs will occur outside of a medical setting; the current survival rate for these “out-of-hospital” events is between one and ...
... The American Red Cross states that over 350,000 people will suffer from Sudden Cardiac Arrest or SCA this year alone; it is one of the leading causes of death in the US. Most SCAs will occur outside of a medical setting; the current survival rate for these “out-of-hospital” events is between one and ...
Winter 2016 CARDIOLOGY - Cardiovascular Division
... in the pump. Statistics find that up to 30% of LVAD patients require transfusions because of bleeding complications and more than 10% experience Scint imaging probe. In laboratory studies, the researchers found that thrombotic complications one year post-implantation. Unfortunatethe probe could imag ...
... in the pump. Statistics find that up to 30% of LVAD patients require transfusions because of bleeding complications and more than 10% experience Scint imaging probe. In laboratory studies, the researchers found that thrombotic complications one year post-implantation. Unfortunatethe probe could imag ...
Absolute and relative exercise risk for patients with arrhythmias
... Pigozzi et al (2004) found that vigorous exercise training is not associated with prevalence of ventricular arrhythmias in elderly athletes. Lauer et al (2005) Men whose heart rate decreased less than 25 beats in the minute after they stopped the exercise test more than doubled their risk of sudden ...
... Pigozzi et al (2004) found that vigorous exercise training is not associated with prevalence of ventricular arrhythmias in elderly athletes. Lauer et al (2005) Men whose heart rate decreased less than 25 beats in the minute after they stopped the exercise test more than doubled their risk of sudden ...
CASE 9
... Excitation of the heart begins with action potential initiation in the cardiac tissue with the fastest intrinsic pacemakers, the SA node. Action potentials then are conducted through gap junctions in intercalated discs from fiber to fiber, proceeding sequentially through the atria, AV node, bundle o ...
... Excitation of the heart begins with action potential initiation in the cardiac tissue with the fastest intrinsic pacemakers, the SA node. Action potentials then are conducted through gap junctions in intercalated discs from fiber to fiber, proceeding sequentially through the atria, AV node, bundle o ...
Unit 8
... Factors Affecting Stroke Volume 1. Preload – amount ventricles are stretched by contained blood, the greater the SV will be, described as the Frank Starling Law 2. Contractility – cardiac cell contractile force due to factors other than EDV such as SNS and PNS 3. Afterload – back pressure exerted b ...
... Factors Affecting Stroke Volume 1. Preload – amount ventricles are stretched by contained blood, the greater the SV will be, described as the Frank Starling Law 2. Contractility – cardiac cell contractile force due to factors other than EDV such as SNS and PNS 3. Afterload – back pressure exerted b ...
24 Regulation of blood flow
... regulation of blood flow. It located on the bottom of 4 ventricle, in it upper part. Vasomotor center divided on pressor and depressor zones. Pressor zone support increase of arterial pressure. It connect with the increase of tone of resistive vessels. Also increase frequency and strength of heart c ...
... regulation of blood flow. It located on the bottom of 4 ventricle, in it upper part. Vasomotor center divided on pressor and depressor zones. Pressor zone support increase of arterial pressure. It connect with the increase of tone of resistive vessels. Also increase frequency and strength of heart c ...
Premature Ventricular Contraction-Induced Systolic Heart Failure: A
... using medications or, more commonly in the latter years by using ablation therapy [4]. Identification of the potential risk of VPDs for producing LV dysfunction is essential to provide proper treatment that can improve LV ejection fraction (LVEF) and reduce the incidence of heart failure. The origin ...
... using medications or, more commonly in the latter years by using ablation therapy [4]. Identification of the potential risk of VPDs for producing LV dysfunction is essential to provide proper treatment that can improve LV ejection fraction (LVEF) and reduce the incidence of heart failure. The origin ...
UK Biobank imaging assessment visit: incidental findings The scans
... UK Biobank imaging assessment visit: incidental findings The scans we do during your UK Biobank imaging visit are not intended to diagnose disease. They are not designed to find any particular abnormalities and will not be routinely analysed by doctors or other specialists. The technicians (radiogra ...
... UK Biobank imaging assessment visit: incidental findings The scans we do during your UK Biobank imaging visit are not intended to diagnose disease. They are not designed to find any particular abnormalities and will not be routinely analysed by doctors or other specialists. The technicians (radiogra ...
Slide #12: What is leukemia? Cancer of the white blood cells
... Slide #35: What are 3 major similarities and differences between arteries, veins, and capillaries? Similarities: veins and arteries have three layers, all carry blood and transport substances, veins and arteries have a lumen differences: arteries carry blood away from heart, veins carry it toward, a ...
... Slide #35: What are 3 major similarities and differences between arteries, veins, and capillaries? Similarities: veins and arteries have three layers, all carry blood and transport substances, veins and arteries have a lumen differences: arteries carry blood away from heart, veins carry it toward, a ...
Ventricular Arterial Stiffening
... reflected by the most rightward loop of the set. The 2 relations depicted are the end-systolic PV relation and slope (Ees) and the ratio of end-systolic pressure to stroke volume— or effective arterial elastance (Ea). These are often equal in absolute magnitude, a combination yielding optimal and ef ...
... reflected by the most rightward loop of the set. The 2 relations depicted are the end-systolic PV relation and slope (Ees) and the ratio of end-systolic pressure to stroke volume— or effective arterial elastance (Ea). These are often equal in absolute magnitude, a combination yielding optimal and ef ...
The REGULATE-PCI Randomized Clinical Trial
... and positive cardiac biomarkers • Subgroup B: Patients with at least one of the following risk factors: ACS with positive cardiac biomarkers > 7 days prior to randomization; unstable angina (without positive cardiac biomarkers); age > 70 years; diabetes; chronic kidney disease (estimated CrCl < 60 m ...
... and positive cardiac biomarkers • Subgroup B: Patients with at least one of the following risk factors: ACS with positive cardiac biomarkers > 7 days prior to randomization; unstable angina (without positive cardiac biomarkers); age > 70 years; diabetes; chronic kidney disease (estimated CrCl < 60 m ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.