EKG Criteria
... These complexes originate in the atria. They often originate from ectopic pacemaker sites within the atria which results in an abnormal P wave. The complex occurs before the normal beat is expected, hence the prematurity. It is followed by a pause. There are many causes including: increased sympathe ...
... These complexes originate in the atria. They often originate from ectopic pacemaker sites within the atria which results in an abnormal P wave. The complex occurs before the normal beat is expected, hence the prematurity. It is followed by a pause. There are many causes including: increased sympathe ...
Heart rate modulates the slow enhancement of contraction due to
... Experiments were performed on isolated hearts from male dogs weighing 12–16 kg that were supported by the arterial blood of a second dog. The support dog (19–23 kg) was anesthetized with morphine hydrochloride (2 mg/kg im), chloralose (60 mg/kg iv), and urethane (600 mg/kg iv), heparinized (500 U/kg ...
... Experiments were performed on isolated hearts from male dogs weighing 12–16 kg that were supported by the arterial blood of a second dog. The support dog (19–23 kg) was anesthetized with morphine hydrochloride (2 mg/kg im), chloralose (60 mg/kg iv), and urethane (600 mg/kg iv), heparinized (500 U/kg ...
Left Ventricle Posterior Wall Aneurysms with Calcified Thrombus in
... cardioversion. Twelve hours later, the ECG remained in sinus rhythm, T wave inversion continued in II,III, aVF and ST depression in V5-6. A transthoracic echocardiogram (TTE) showed a dyskinetic posterior left ventricular wall and mild mitral regurgitation, with moderate reduction of ejection fracti ...
... cardioversion. Twelve hours later, the ECG remained in sinus rhythm, T wave inversion continued in II,III, aVF and ST depression in V5-6. A transthoracic echocardiogram (TTE) showed a dyskinetic posterior left ventricular wall and mild mitral regurgitation, with moderate reduction of ejection fracti ...
Cardiac output and peripheral resistance during larval development
... increase in proportion to body mass. We found that heart rate declined in larval Xenopus during development at a much slower rate than would be predicted from allometric equations based on interspecific comparisons in adult vertebrates. Arterial blood pressure increased continuously from larvae to t ...
... increase in proportion to body mass. We found that heart rate declined in larval Xenopus during development at a much slower rate than would be predicted from allometric equations based on interspecific comparisons in adult vertebrates. Arterial blood pressure increased continuously from larvae to t ...
Pulmonary hypertension at exercise in COPD: does it matter? EDITORIAL
... combined effects of hypoxia, inflammation, hyper-inflation of the lungs and an increase in left ventricular end-diastolic pressure [2, 3]. Increased PAP is associated with decreased survival, may be the cause of clinical right heart failure, particularly in hypoxaemic patients with associated salt a ...
... combined effects of hypoxia, inflammation, hyper-inflation of the lungs and an increase in left ventricular end-diastolic pressure [2, 3]. Increased PAP is associated with decreased survival, may be the cause of clinical right heart failure, particularly in hypoxaemic patients with associated salt a ...
Takotsubo Cardiomyopathy
... Area of abnormal left ventricular wall motion would not be expected to extend beyond the perfusion territory normally supplied by the artery ECG findings seem to differ : not evince reciprocal changes Ischemic myocardial stunning does not produce the histological changes usually observed in takotsub ...
... Area of abnormal left ventricular wall motion would not be expected to extend beyond the perfusion territory normally supplied by the artery ECG findings seem to differ : not evince reciprocal changes Ischemic myocardial stunning does not produce the histological changes usually observed in takotsub ...
prevalence of asymptomatic left ventricular diastolic dysfunction in
... BMI and waist-hip index and discontinuing smoking all prevent, reduce or reverse complications of diabetes. SOLVD-P showed that treatment with aceinhibitors reduced progression of LV dysfunction to chronic heart failure from whatever cause. Hospitalization was reduced by more than one third. Initial ...
... BMI and waist-hip index and discontinuing smoking all prevent, reduce or reverse complications of diabetes. SOLVD-P showed that treatment with aceinhibitors reduced progression of LV dysfunction to chronic heart failure from whatever cause. Hospitalization was reduced by more than one third. Initial ...
Case
... Hypokalemia in this case was troubling. Hypokalemia could itself had been the arrhythmogenic factor in this case, although the arrhythmia was reverted to sinus rhythm while potassium level was still low. Furthermore, hypokalemia could also be the concomitant factor for QT prolongation. The cause of ...
... Hypokalemia in this case was troubling. Hypokalemia could itself had been the arrhythmogenic factor in this case, although the arrhythmia was reverted to sinus rhythm while potassium level was still low. Furthermore, hypokalemia could also be the concomitant factor for QT prolongation. The cause of ...
Dilated cardiomyopathy in mice deficient for the lysosomal cysteine
... yet. Here, we report that the lysosomal cysteine peptidase cathepsin L (CTSL) is critical for cardiac morphology and function. Oneyear-old CTSL-deficient mice show significant ventricular and atrial enlargement that is associated with a comparatively small increase in relative heart weight. Intersti ...
... yet. Here, we report that the lysosomal cysteine peptidase cathepsin L (CTSL) is critical for cardiac morphology and function. Oneyear-old CTSL-deficient mice show significant ventricular and atrial enlargement that is associated with a comparatively small increase in relative heart weight. Intersti ...
Understanding the Heterogeneity in Volume Overload and Fluid
... TBV measurements were obtained before diuresis therapy was initiated by the primary care service. In a portion of these patients, TBV was also measured on the day of hospital discharge. Patients who required urgent intensive care management were not included in this study because of logistic issues ...
... TBV measurements were obtained before diuresis therapy was initiated by the primary care service. In a portion of these patients, TBV was also measured on the day of hospital discharge. Patients who required urgent intensive care management were not included in this study because of logistic issues ...
Management of Acute Right Ventricular Failure in the
... assessment of right-sided filling pressures and oxygen delivery. Normal SvO2 is 70–80%, and lower values, in the setting of normal arterial oxygenation, can be suggestive of reduced cardiac output. If RV preload is too high, reductions in central venous pressure via diuresis or dialysis should be acc ...
... assessment of right-sided filling pressures and oxygen delivery. Normal SvO2 is 70–80%, and lower values, in the setting of normal arterial oxygenation, can be suggestive of reduced cardiac output. If RV preload is too high, reductions in central venous pressure via diuresis or dialysis should be acc ...
Total Artificial Hearts And Implantable Ventricular Assist Devices
... refer to FEP Medical Policy Manual MP-7.03.11, Total Artificial Hearts and Implantable Ventricular Assist Devices. The FEP Medical Policy Manual can be found at: www.fepblue.org. ** Regarding artificial hearts - implants of artificial organs including those implanted as a bridge to transplant and/or ...
... refer to FEP Medical Policy Manual MP-7.03.11, Total Artificial Hearts and Implantable Ventricular Assist Devices. The FEP Medical Policy Manual can be found at: www.fepblue.org. ** Regarding artificial hearts - implants of artificial organs including those implanted as a bridge to transplant and/or ...
Structural and Mechanical Adaptations of Right Ventricle Free Wall
... curative treatments have been made available except lung transplantation.4 Following transplantation, dramatic improvements in mean pulmonary artery pressure, pulmonary vascular resistance, and RV ejections fractions have been observed,27 although the exact mechanisms by which the RV can revert back ...
... curative treatments have been made available except lung transplantation.4 Following transplantation, dramatic improvements in mean pulmonary artery pressure, pulmonary vascular resistance, and RV ejections fractions have been observed,27 although the exact mechanisms by which the RV can revert back ...
The Johns Hopkins Arrhythmia Service
... “Typical atrial flutter” results from a single “short circuit” in the right atrium. This short-circuit causes the atria to beat at about 300 beats per minute while the lower chamber of the heart (the ventricles) beat at a slower rate (often 75 to 150 beats per minute). Like atrial fibrillation, atri ...
... “Typical atrial flutter” results from a single “short circuit” in the right atrium. This short-circuit causes the atria to beat at about 300 beats per minute while the lower chamber of the heart (the ventricles) beat at a slower rate (often 75 to 150 beats per minute). Like atrial fibrillation, atri ...
SAED Guide revised Jan 2008 - Grampians Region Health
... Approximately the size of a person’s fist, the heart weighs between 250 and 300grams. It sits within the mediastinum and extends from the second rib to the fifth intercostal space. It assumes an oblique position in the thorax; approximately two-thirds of its mass is left of the midsternal line with ...
... Approximately the size of a person’s fist, the heart weighs between 250 and 300grams. It sits within the mediastinum and extends from the second rib to the fifth intercostal space. It assumes an oblique position in the thorax; approximately two-thirds of its mass is left of the midsternal line with ...
Heart Blocks and Pacemakers - Calgary Emergency Medicine
... confusion If cardiac output is reduced, patient may experience angina, syncope or heart failure due to bradycardia and resultant hypoperfusion state. Can occur in athletes with high vagal tone Elderly: aging prolongs cycle length ...
... confusion If cardiac output is reduced, patient may experience angina, syncope or heart failure due to bradycardia and resultant hypoperfusion state. Can occur in athletes with high vagal tone Elderly: aging prolongs cycle length ...
A healthy heart is not a metronome
... vagal innervation of the ventricles, vagal activity minimally affects ventricular contractility. The response time of the sinus node is very short and the effect of a single efferent vagal impulse depends on the phase of the cardiac cycle at which it is received. Thus, vagal stimulation results in a ...
... vagal innervation of the ventricles, vagal activity minimally affects ventricular contractility. The response time of the sinus node is very short and the effect of a single efferent vagal impulse depends on the phase of the cardiac cycle at which it is received. Thus, vagal stimulation results in a ...
CHLOROFORM: - Wood Library
... give a circumstantial account of what took place on any occasion of danger. It may be worth while, as the views now submitted differ considerably from those which have been urged by others; that I should give one or two illustrations of the evidence I allude to, which is sprinkled over a large mass ...
... give a circumstantial account of what took place on any occasion of danger. It may be worth while, as the views now submitted differ considerably from those which have been urged by others; that I should give one or two illustrations of the evidence I allude to, which is sprinkled over a large mass ...
Cardiopulmonary resuscitation dr. Horáček
... • in SVT with hypomagnesemia, hypokalemia • in digoxin toxicity • dose 2 g i.v. = 10 ml 20% MgSO4 ...
... • in SVT with hypomagnesemia, hypokalemia • in digoxin toxicity • dose 2 g i.v. = 10 ml 20% MgSO4 ...
pub1211_25.08 - tarde.indd
... in the diagrammatic forms. This should be due to the difficulty in distinguishing the CCS from the surrounding cardiac tissues and the lack of information concerning the precise landmarks for gross dissection. Furthermore the CCS in pig, the animal regarded as a suitable model for the assessment of ...
... in the diagrammatic forms. This should be due to the difficulty in distinguishing the CCS from the surrounding cardiac tissues and the lack of information concerning the precise landmarks for gross dissection. Furthermore the CCS in pig, the animal regarded as a suitable model for the assessment of ...
Marathon run: cardiovascular adaptation and
... hypertrophic cardiomyopathy.21 Nevertheless, ever since its first description by Henschen in 1899,22 the athlete’s heart has provoked controversial discussions with respect to its health-related consequences. Although professional young athletes may also experience serious cardiovascular maladaptati ...
... hypertrophic cardiomyopathy.21 Nevertheless, ever since its first description by Henschen in 1899,22 the athlete’s heart has provoked controversial discussions with respect to its health-related consequences. Although professional young athletes may also experience serious cardiovascular maladaptati ...
ATRIAL FIBRILLATION IN CHILDHOOD WITH FAMILIAL
... been replete with documented genes e.g. LMNA and SCNRA, and chromosomes, which can be autosomal dominant e.g. 10q22-24, and autosomal recessive e.g. 5p13, and ways that hyperthyroid states may affect the heart. These data point to multifactorial reasons, indicating the need for more chromosomal and ...
... been replete with documented genes e.g. LMNA and SCNRA, and chromosomes, which can be autosomal dominant e.g. 10q22-24, and autosomal recessive e.g. 5p13, and ways that hyperthyroid states may affect the heart. These data point to multifactorial reasons, indicating the need for more chromosomal and ...
sample - Test Bank Exam
... 10. Which nursing diagnosis is appropriate for the person experiencing acute heart failure? 1. Acute chest pain related to inadequate cardiac perfusion 2. Deficient fluid volume related to chronic heart failure 3. Ineffective tissue perfusion related to ineffective pump 4. Increased cardiac output r ...
... 10. Which nursing diagnosis is appropriate for the person experiencing acute heart failure? 1. Acute chest pain related to inadequate cardiac perfusion 2. Deficient fluid volume related to chronic heart failure 3. Ineffective tissue perfusion related to ineffective pump 4. Increased cardiac output r ...
Treatment Considerations for a Dual Epidemic of Atrial Fibrillation
... Heart failure affects approximately 5.7 million patients in the United States,11 and about 550 000 patients are diagnosed with new heart failure each year. Although the incidence of heart failure has remained stable over the past 50 years, the prevalence of heart failure in the United States has ste ...
... Heart failure affects approximately 5.7 million patients in the United States,11 and about 550 000 patients are diagnosed with new heart failure each year. Although the incidence of heart failure has remained stable over the past 50 years, the prevalence of heart failure in the United States has ste ...
Heart failure
Heart failure (HF), often referred to as congestive heart failure (CHF), occurs when the heart is unable to pump sufficiently to maintain blood flow to meet the body's needs. The terms chronic heart failure (CHF) or congestive cardiac failure (CCF) are often used interchangeably with congestive heart failure. Signs and symptoms commonly include shortness of breath, excessive tiredness, and leg swelling. The shortness of breath is usually worse with exercise, while lying down, and may wake the person at night. A limited ability to exercise is also a common feature.Common causes of heart failure include coronary artery disease including a previous myocardial infarction (heart attack), high blood pressure, atrial fibrillation, valvular heart disease, excess alcohol use, infection, and cardiomyopathy of an unknown cause. These cause heart failure by changing either the structure or the functioning of the heart. There are two main types of heart failure: heart failure due to left ventricular dysfunction and heart failure with normal ejection fraction depending on if the ability of the left ventricle to contract is affected, or the heart's ability to relax. The severity of disease is usually graded by the degree of problems with exercise. Heart failure is not the same as myocardial infarction (in which part of the heart muscle dies) or cardiac arrest (in which blood flow stops altogether). Other diseases that may have symptoms similar to heart failure include obesity, kidney failure, liver problems, anemia and thyroid disease.The condition is diagnosed based on the history of the symptoms and a physical examination with confirmation by echocardiography. Blood tests, electrocardiography, and chest radiography may be useful to determine the underlying cause. Treatment depends on the severity and cause of the disease. In people with chronic stable mild heart failure, treatment commonly consists of lifestyle modifications such as stopping smoking, physical exercise, and dietary changes, as well as medications. In those with heart failure due to left ventricular dysfunction, angiotensin converting enzyme inhibitors or angiotensin receptor blockers along with beta blockers are recommended. For those with severe disease, aldosterone antagonists, or hydralazine plus a nitrate may be used. Diuretics are useful for preventing fluid retention. Sometimes, depending on the cause, an implanted device such as a pacemaker or an implantable cardiac defibrillator may be recommended. In some moderate or severe cases cardiac resynchronization therapy (CRT) may be suggested or cardiac contractility modulation may be of benefit. A ventricular assist device or occasionally a heart transplant may be recommended in those with severe disease despite all other measures.Heart failure is a common, costly, and potentially fatal condition. In developed countries, around 2% of adults have heart failure and in those over the age of 65, this increases to 6–10%. In the year after diagnosis the risk of death is about 35% after which it decreases to below 10% each year. This is similar to the risks with a number of types of cancer. In the United Kingdom the disease is the reason for 5% of emergency hospital admissions. Heart failure has been known since ancient times with the Ebers papyrus commenting on it around 1550 BCE.