left coronary artery
... through the fibrous skeleton of the heart. The atrioventricular bundle descends behind the septal cusp of the tricuspid valve to reach the inferior border of the membranous part of the ventricular septum. At the upper border of the muscular part of the septum, it divides into two branches, one f ...
... through the fibrous skeleton of the heart. The atrioventricular bundle descends behind the septal cusp of the tricuspid valve to reach the inferior border of the membranous part of the ventricular septum. At the upper border of the muscular part of the septum, it divides into two branches, one f ...
JAOK HAN, MD, PH.D.
... interventions are clearly indicated only when severe bradycardia is complicated by excessive hypotension or excessive ventricular ectopic activity. The point we wish to emphasize is that we do not know the precise definitions of "severe" or "excessive," nor what the limits of safety are when heart r ...
... interventions are clearly indicated only when severe bradycardia is complicated by excessive hypotension or excessive ventricular ectopic activity. The point we wish to emphasize is that we do not know the precise definitions of "severe" or "excessive," nor what the limits of safety are when heart r ...
ch20 outline
... A. Since the body’s need for oxygen varies with the level of activity, the heart’s ability to discharge oxygen-carrying blood must also be variable. Body cells need specific amounts of blood each minute to maintain health and life. B. Cardiac output (CO) is the volume of blood ejected from the left ...
... A. Since the body’s need for oxygen varies with the level of activity, the heart’s ability to discharge oxygen-carrying blood must also be variable. Body cells need specific amounts of blood each minute to maintain health and life. B. Cardiac output (CO) is the volume of blood ejected from the left ...
Radiology Packet 1 - News, Events, and Publications
... left atrial region and in the VD view there is mild spreading of the mainstem bronchi. In the VD view a bulge of the aorta can be seen adjacent to the main pulmonary artery region, known as a “ductus bulge”. A small bulge is also present in the region of the main pulmonary artery. Cranial and caudal ...
... left atrial region and in the VD view there is mild spreading of the mainstem bronchi. In the VD view a bulge of the aorta can be seen adjacent to the main pulmonary artery region, known as a “ductus bulge”. A small bulge is also present in the region of the main pulmonary artery. Cranial and caudal ...
Cardiac Tamponade - Jefferson EM Ultrasound
... Goodman, Adam et al. “The Role of Bedside Ultrasound in the Diagnosis of Pericardial Effusion and Cardiac Tamponade.” Journal of Emergencies, Trauma, and Shock 5.1 (2012): 72–75. PMC. Web. 10 Dec. 2016. ...
... Goodman, Adam et al. “The Role of Bedside Ultrasound in the Diagnosis of Pericardial Effusion and Cardiac Tamponade.” Journal of Emergencies, Trauma, and Shock 5.1 (2012): 72–75. PMC. Web. 10 Dec. 2016. ...
Cardiovascular Health and Other Diseases
... to the body; myocardial infarction. Angina pectoris (chest pain) = A condition in which the heart muscle does not receive enough blood, causing severe pain in the chest and often in the left arm and shoulder. Arrhythmia = An irregularity in the force or rhythm of the heartbeat. Sudden cardiac ...
... to the body; myocardial infarction. Angina pectoris (chest pain) = A condition in which the heart muscle does not receive enough blood, causing severe pain in the chest and often in the left arm and shoulder. Arrhythmia = An irregularity in the force or rhythm of the heartbeat. Sudden cardiac ...
The Heart - USD Biology
... During diving, the pulmonary system is not required. When the animal dives, the heart rate decreases. Crocodilians have a valve called the founs in the aperture region of the pulmonary artery which, when closed, increases resistance in the pulmonary aorta. When the right ventricular pressure exceed ...
... During diving, the pulmonary system is not required. When the animal dives, the heart rate decreases. Crocodilians have a valve called the founs in the aperture region of the pulmonary artery which, when closed, increases resistance in the pulmonary aorta. When the right ventricular pressure exceed ...
3Age 14-16 - SchoolScience.co.uk
... the diastolic pressure. The meter also displays the heart rate. Explain that the systolic pressure is equivalent to the pressure generated when the left ventricle is contracting and the diastolic pressure is the pressure that remains in the artery whilst the left ventricle is filling. This results in ...
... the diastolic pressure. The meter also displays the heart rate. Explain that the systolic pressure is equivalent to the pressure generated when the left ventricle is contracting and the diastolic pressure is the pressure that remains in the artery whilst the left ventricle is filling. This results in ...
Cardiac Ablations - Penn State Hershey
... procedure may last one hour to several hours. You are given a sedative and local anesthetic to minimize pain and discomfort. A health care provider cleans the skin on your groin and removes any hair in the area. Once the skin is washed, prepped, and numbed, small needles are used to puncture the vei ...
... procedure may last one hour to several hours. You are given a sedative and local anesthetic to minimize pain and discomfort. A health care provider cleans the skin on your groin and removes any hair in the area. Once the skin is washed, prepped, and numbed, small needles are used to puncture the vei ...
The Circulatory System
... Even though they're tiny, the capillaries are one of the most important parts of the circulatory system because it is through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries. ...
... Even though they're tiny, the capillaries are one of the most important parts of the circulatory system because it is through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries. ...
Complex Heart Defects Tricuspid Atresia Hypoplastic Left Heart
... via Ductus Arteriosus http://www.packardchildrenshospital.org/health/hrnewborn/pda.htm ...
... via Ductus Arteriosus http://www.packardchildrenshospital.org/health/hrnewborn/pda.htm ...
One heartbeat at a time.
... Research demonstrates that the rapid return of blood to the heart after opening a clogged artery may cause damage to heart muscle. In a study funded by the National Institutes of Health, MHIF researcher Jay H. Traverse, MD, is testing a technique called postconditioning which slows down this rapid f ...
... Research demonstrates that the rapid return of blood to the heart after opening a clogged artery may cause damage to heart muscle. In a study funded by the National Institutes of Health, MHIF researcher Jay H. Traverse, MD, is testing a technique called postconditioning which slows down this rapid f ...
Sheep Heart Dissection (v1)
... base. The right and left atria are also located at the base and appear as thin-walled chambers with irregular, more or less scalloped edges. The wrinkled portion of each atrium that protrudes externally to form a pouch is called the auricle or atrial appendage. The atria serve as receiving chambers ...
... base. The right and left atria are also located at the base and appear as thin-walled chambers with irregular, more or less scalloped edges. The wrinkled portion of each atrium that protrudes externally to form a pouch is called the auricle or atrial appendage. The atria serve as receiving chambers ...
No Slide Title
... • When the heart consistently must work harder to pump, over time it becomes enlarged (hypertrophy) and ineffective in its pumping action. ...
... • When the heart consistently must work harder to pump, over time it becomes enlarged (hypertrophy) and ineffective in its pumping action. ...
Melbourne Heart Rhythm Ventricular Tachycardia in Structurally
... body and to maintain a normal blood pressure. Abnormal and fast rhythms from the ventricle may impair the ability of the pump to supply blood to the brain and the rest of the body as a result of the rapid rate and weak contractions. This may result in palpitations (a feeling of rapid or abnormal hea ...
... body and to maintain a normal blood pressure. Abnormal and fast rhythms from the ventricle may impair the ability of the pump to supply blood to the brain and the rest of the body as a result of the rapid rate and weak contractions. This may result in palpitations (a feeling of rapid or abnormal hea ...
Mitral Stenosis
... 4× as common as mitral regurge women > men Stenosis - thickening of cusps and fusion of commissures leads to pressure gradient between left atrium and left ventricle. as stenosis worsens ventricular filling is impaied, compounded by subvalvular apparatus fibrosis leading to left atrial dilation and ...
... 4× as common as mitral regurge women > men Stenosis - thickening of cusps and fusion of commissures leads to pressure gradient between left atrium and left ventricle. as stenosis worsens ventricular filling is impaied, compounded by subvalvular apparatus fibrosis leading to left atrial dilation and ...
Digitalis (cardiac glycoside) poisoning
... Ventricular arrhythmias are reportedly more common in chronic toxicity and in patients with chronic heart disease The so-called "digitalis effect" on the electrocardiogram consists of T wave changes (flattening or inversion), QT interval shortening, scooped ST segments with ST depression in the ...
... Ventricular arrhythmias are reportedly more common in chronic toxicity and in patients with chronic heart disease The so-called "digitalis effect" on the electrocardiogram consists of T wave changes (flattening or inversion), QT interval shortening, scooped ST segments with ST depression in the ...
Strength of Evidence = A - Institute for Healthcare Improvement
... The expedition will focus on key elements of care to ensure patients with heart failure have less severe symptoms, better quality of life, and fewer readmissions to the hospital. • Conduct left ventricular systolic (LVS) assessment • Provide adult smoking cessation advice and counseling • Provide AC ...
... The expedition will focus on key elements of care to ensure patients with heart failure have less severe symptoms, better quality of life, and fewer readmissions to the hospital. • Conduct left ventricular systolic (LVS) assessment • Provide adult smoking cessation advice and counseling • Provide AC ...
A2-Cardiac Anatomy
... • To measure have patient lie supine at an angle of 45° with the head turned to the left • Normally the JVP is 1-2 cm above the sternal angle, and elevations above this range is evidence of high right atrial pressure ...
... • To measure have patient lie supine at an angle of 45° with the head turned to the left • Normally the JVP is 1-2 cm above the sternal angle, and elevations above this range is evidence of high right atrial pressure ...
Chapt05 Lecture 13ed Pt 4
... • Part of the heart dies due to lack of oxygen. • It can begin with angina pectoris, a pain that radiates down the left arm due to a blockage of a coronary artery. ...
... • Part of the heart dies due to lack of oxygen. • It can begin with angina pectoris, a pain that radiates down the left arm due to a blockage of a coronary artery. ...
Board Review Cardiology
... Due to turbulent flow at the origin of the small branch pulmonary arteries as they exit the large main pulmonary artery ...
... Due to turbulent flow at the origin of the small branch pulmonary arteries as they exit the large main pulmonary artery ...
The “Thoracic Pump” Impetus for the Respiratory Arterial Pressure
... Impetus for the Respiratory Arterial Pressure Wave and Breathing Induced Heart Rate Variability ...
... Impetus for the Respiratory Arterial Pressure Wave and Breathing Induced Heart Rate Variability ...
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.