Reference left atrial dimensions and volumes by steady state free
... For definition of normal ranges of LA dimensions we studied 120 subjects, with 10 men and 10 women in each of 6 age deciles from 20 to 80 years, these subjects having been reported elsewhere in a study of ventricular volumes [21] in which, importantly, their diastolic filling parameters by filling r ...
... For definition of normal ranges of LA dimensions we studied 120 subjects, with 10 men and 10 women in each of 6 age deciles from 20 to 80 years, these subjects having been reported elsewhere in a study of ventricular volumes [21] in which, importantly, their diastolic filling parameters by filling r ...
Cardiac Murmurs
... obstructive cardiomyopathy. Systolic ejection murmurs can also occur in conditions of high cardiac output, such as anemia and thyrotoxicosis. Innocent murmur.This is the most common murmur in school-aged children.3 The innocent murmur is a crescendo-decrescendo early systolic murmur that isheard bes ...
... obstructive cardiomyopathy. Systolic ejection murmurs can also occur in conditions of high cardiac output, such as anemia and thyrotoxicosis. Innocent murmur.This is the most common murmur in school-aged children.3 The innocent murmur is a crescendo-decrescendo early systolic murmur that isheard bes ...
Sleep Apnea in Heart Failure Increases Heart Rate Variability and
... Aims: Sleep disordered breathing (SDB) is common in heart failure and ventilation is known to influence heart rate. Our aims were to assess the influence of SDB on heart rate variability (HRV) and to determine whether central sleep apnea (CSA) and obstructive sleep apnea (OSA) produced different patte ...
... Aims: Sleep disordered breathing (SDB) is common in heart failure and ventilation is known to influence heart rate. Our aims were to assess the influence of SDB on heart rate variability (HRV) and to determine whether central sleep apnea (CSA) and obstructive sleep apnea (OSA) produced different patte ...
Management of Patients with Atrial Fibrillation: Focus on
... cardioversion to sinus rhythm is achieved later than in the case of class Ic drugs.13 Electrical cardioversion, when compared to pharmacological cardioversion is more effective, particularly in persistent AF.13 On the other hand AF symptoms duration ≥ 48 hours (or of unknown duration), patients requ ...
... cardioversion to sinus rhythm is achieved later than in the case of class Ic drugs.13 Electrical cardioversion, when compared to pharmacological cardioversion is more effective, particularly in persistent AF.13 On the other hand AF symptoms duration ≥ 48 hours (or of unknown duration), patients requ ...
Prognostic Value of Angiographic Indices of Coronary Artery
... A normally contracting left ventricle is scored five. The maximum possible score for a totally encompassing ventricular aneurysm is 30. ...
... A normally contracting left ventricle is scored five. The maximum possible score for a totally encompassing ventricular aneurysm is 30. ...
Treatment Considerations for a Dual Epidemic of Atrial Fibrillation
... AF is a major public health problem,6,7 with hospitalizations as the primary cost driver (52%), followed by drugs (23%), consultations (9%), further investigations (8%), loss of work (6%), and paramedical procedures (2%). During the past 20 years, there has been a 66% increase in hospital admissions ...
... AF is a major public health problem,6,7 with hospitalizations as the primary cost driver (52%), followed by drugs (23%), consultations (9%), further investigations (8%), loss of work (6%), and paramedical procedures (2%). During the past 20 years, there has been a 66% increase in hospital admissions ...
Feasibility and efficacy of bypassing the right ventricle and
... by the local authorities (Lanuv in Recklinghausen; Ref No.: 8.87-51.04.20.09.307). Animals were treated according to the “Guide for the care and use of Laboratory animals” published by the US National Institutes of Health (National Institutes of Health publication no. 8523, revised 1996). After prem ...
... by the local authorities (Lanuv in Recklinghausen; Ref No.: 8.87-51.04.20.09.307). Animals were treated according to the “Guide for the care and use of Laboratory animals” published by the US National Institutes of Health (National Institutes of Health publication no. 8523, revised 1996). After prem ...
Left Ventricular Filling and Diastolic Pressure
... The activity and behavior of the dogs returned completely to normal within a week after insertion of the screws. A left thoracotomy was carried out under pentobarbital anesthesia and aseptic conditions 1 week to 8 months after screw implantation. A small incision was made in the anterior wall or ape ...
... The activity and behavior of the dogs returned completely to normal within a week after insertion of the screws. A left thoracotomy was carried out under pentobarbital anesthesia and aseptic conditions 1 week to 8 months after screw implantation. A small incision was made in the anterior wall or ape ...
Correspondence Latent pre-excitation: exposure of
... those with enhanced conduction in the atrioven- atrial excitation waves, followed by conduction tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the dur ...
... those with enhanced conduction in the atrioven- atrial excitation waves, followed by conduction tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the dur ...
The Hypertrophic Cardiomyopathy Program
... at least one in 500 Americans. This condition can be diagnosed at any time between infancy and seniors. HCM may be silent and symptoms may vary widely, from mild chest pain and difficulty breathing to serious arrhythmias, conduction problems, and heart failure. Some patients with HCM may report shor ...
... at least one in 500 Americans. This condition can be diagnosed at any time between infancy and seniors. HCM may be silent and symptoms may vary widely, from mild chest pain and difficulty breathing to serious arrhythmias, conduction problems, and heart failure. Some patients with HCM may report shor ...
Supraventricular arrhythmias
... developed tachycardia and then lost consciousness. She admits to having a stressful day and having had more caffeine than normal. She has had brief episodes of tachypalpitations in the past but no prior syncope. • Physical examination is unremarkable and the patient is in sinus rhythm. The chest rad ...
... developed tachycardia and then lost consciousness. She admits to having a stressful day and having had more caffeine than normal. She has had brief episodes of tachypalpitations in the past but no prior syncope. • Physical examination is unremarkable and the patient is in sinus rhythm. The chest rad ...
thesis. - Munin
... PLR caused significant changes in the majority of hemodynamic variables both in pregnant (at 22-24 weeks of gestation) and non-pregnant women. The hemodynamic response to PLR was similar in both groups with similar trend and magnitude of change (∆ %). Approximately, 15% of pregnant women and 11% of ...
... PLR caused significant changes in the majority of hemodynamic variables both in pregnant (at 22-24 weeks of gestation) and non-pregnant women. The hemodynamic response to PLR was similar in both groups with similar trend and magnitude of change (∆ %). Approximately, 15% of pregnant women and 11% of ...
Isovolumetric Relaxation?
... of nonionic contrast and data collection. All patients were instructed on breath-holding before the catheterization, and all data were collected at midexpiration. Analog recordings of ECG, LVP, and online dP/dt were continuously made throughout the research portion of the catheterization. The 40-mm ...
... of nonionic contrast and data collection. All patients were instructed on breath-holding before the catheterization, and all data were collected at midexpiration. Analog recordings of ECG, LVP, and online dP/dt were continuously made throughout the research portion of the catheterization. The 40-mm ...
Advances in Arrhythmia and Electrophysiology
... genic mechanisms. Ventricular dyssynchrony results in compromised global cardiac mechanical efficiency, asymmetrically increased wall thickness in the late-activated regions, altered myocardial blood flow, and local changes in myocardial protein expression.28 The ventricular dyssynchrony associated ...
... genic mechanisms. Ventricular dyssynchrony results in compromised global cardiac mechanical efficiency, asymmetrically increased wall thickness in the late-activated regions, altered myocardial blood flow, and local changes in myocardial protein expression.28 The ventricular dyssynchrony associated ...
Left Ventricular Endocardial Longitudinal and - AJP
... because they assumed that the mitral valve must already be closed at the onset of IVC. Also, finding that the first heart sound occurred during the rapid ventricular pressure development (or IVC) and not at end diastole as expected, they concluded that this sound was generated by the vibration of th ...
... because they assumed that the mitral valve must already be closed at the onset of IVC. Also, finding that the first heart sound occurred during the rapid ventricular pressure development (or IVC) and not at end diastole as expected, they concluded that this sound was generated by the vibration of th ...
Advances in Arrhythmia and Electrophysiology
... genic mechanisms. Ventricular dyssynchrony results in compromised global cardiac mechanical efficiency, asymmetrically increased wall thickness in the late-activated regions, altered myocardial blood flow, and local changes in myocardial protein expression.28 The ventricular dyssynchrony associated ...
... genic mechanisms. Ventricular dyssynchrony results in compromised global cardiac mechanical efficiency, asymmetrically increased wall thickness in the late-activated regions, altered myocardial blood flow, and local changes in myocardial protein expression.28 The ventricular dyssynchrony associated ...
ACEIs/ARBs for the prevention of type 2 diabetes in patients with
... (such as calcium channel blocker (CCB), β-adrenoceptor blockers and diuretics); (ii) Followup duration was over at least one year; (iii) Treatment group and control group must report the morbidity of type 2 diabetes. Two reviewers independently screened and assessed the eligible trials to be include ...
... (such as calcium channel blocker (CCB), β-adrenoceptor blockers and diuretics); (ii) Followup duration was over at least one year; (iii) Treatment group and control group must report the morbidity of type 2 diabetes. Two reviewers independently screened and assessed the eligible trials to be include ...
Dilated heart failure in transgenic mice expressing the Epstein
... There were no apparent oncogenic consequences of EBNA-LP expression. Unexpectedly however, after several months of apparent good health, transgenic mice in multiple independently derived lineages became ill and died prematurely of congestive (or dilated) heart failure. The highly predictable develop ...
... There were no apparent oncogenic consequences of EBNA-LP expression. Unexpectedly however, after several months of apparent good health, transgenic mice in multiple independently derived lineages became ill and died prematurely of congestive (or dilated) heart failure. The highly predictable develop ...
Newly Diagnosed Atrial Fibrillation
... was associated with a lower cardiac output (4.4 vs. 5.2 liters per minute) and higher pulmonary-capillary wedge pressure (17 vs. 14 mm Hg).14 A chronically elevated heart rate of 130 beats per minute or more may result in secondary cardiomyopathy,15 a type of left ventricular dysfunction that may la ...
... was associated with a lower cardiac output (4.4 vs. 5.2 liters per minute) and higher pulmonary-capillary wedge pressure (17 vs. 14 mm Hg).14 A chronically elevated heart rate of 130 beats per minute or more may result in secondary cardiomyopathy,15 a type of left ventricular dysfunction that may la ...
Marcela Rosas-Nexticapa.pmd
... nifedipine. The results showed that the naphthalene derivative reduces infarct size compared with control. Other results showed that the naphthalene derivative significantly increase (p = 0.05) the perfusion pressure and coronary resistance in isolated heart. In addition, other data indicate that th ...
... nifedipine. The results showed that the naphthalene derivative reduces infarct size compared with control. Other results showed that the naphthalene derivative significantly increase (p = 0.05) the perfusion pressure and coronary resistance in isolated heart. In addition, other data indicate that th ...
Artery in Man: Evaluation of Ventricular Volume Measurements from
... also recorded with a precordial scintillation detection probe. Indicator washout from the ventricular inflow tract was rapid, while washout from the region of the ventricular apex was quite slow. Protosystolic dips in indicator concentration, noted in curves drawn below the pulmonic valve, suggest t ...
... also recorded with a precordial scintillation detection probe. Indicator washout from the ventricular inflow tract was rapid, while washout from the region of the ventricular apex was quite slow. Protosystolic dips in indicator concentration, noted in curves drawn below the pulmonic valve, suggest t ...
Papillary Muscle Shortening in the Intact Dog
... muscle, by creating tension, acts as a stay to restrict mitral valve motion. When normal tension development does not occur, excessive mitral valve motion results in mitral regurgitation (the papillary muscle dysfunction syndrome). An absence of papillary muscle shortening during ventricular systole ...
... muscle, by creating tension, acts as a stay to restrict mitral valve motion. When normal tension development does not occur, excessive mitral valve motion results in mitral regurgitation (the papillary muscle dysfunction syndrome). An absence of papillary muscle shortening during ventricular systole ...
Impact of Diabetes Mellitus on Radial and Ulnar Arterial
... scheduled for elective kidney transplantation which was to be performed under general anesthesia. Every patient required arterial cannulation for continuous pressure monitoring during anesthesia and surgery. We excluded patients with known coagulopathy, signs of inflammation at the intended cannulat ...
... scheduled for elective kidney transplantation which was to be performed under general anesthesia. Every patient required arterial cannulation for continuous pressure monitoring during anesthesia and surgery. We excluded patients with known coagulopathy, signs of inflammation at the intended cannulat ...
Lecture 025, Cardiac - SuperPage for Joel R. Gober, PhD.
... So, if your heart rate increases, so does cardiac output. And if both stroke volume and heart rate increase, then, of course, cardiac output even increases more. A little bit more… >> [INDISTINCT] double? Will increase double if [INDISTINCT]? >> If they increase the same amount, it would double. All ...
... So, if your heart rate increases, so does cardiac output. And if both stroke volume and heart rate increase, then, of course, cardiac output even increases more. A little bit more… >> [INDISTINCT] double? Will increase double if [INDISTINCT]? >> If they increase the same amount, it would double. All ...
Lanoxin™ NGlaxoSmithKline
... should be taken 6 hours or more after the last dose of Lanoxin. There are no rigid guidelines as to the range of serum concentrations that are most efficacious but most patients will benefit, with little risk of toxic symptoms and signs developing, with digoxin concentrations from 0.8ng/ml (1.02nmol ...
... should be taken 6 hours or more after the last dose of Lanoxin. There are no rigid guidelines as to the range of serum concentrations that are most efficacious but most patients will benefit, with little risk of toxic symptoms and signs developing, with digoxin concentrations from 0.8ng/ml (1.02nmol ...
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.