Cor pulmonale results from a disorder of the lung or its vasculature. The increased afterload leads to structural alterations in the right ventricle rv including rv hypertrophy rvh which can be seen in chronic cor pulmonale. Cor pulmonale is estimated to cause approximately 5% to 7% of all types of heart disease in adults, and chronic obstructive pulmonary disease copd due to chronic bronchitis or emphysema is the causative factor in more than 50% of people with cor pulmonale. Journal presentations chronic cor pulmonale in delhi. Diagnosis and treatment of pulmonary hypertension american. Longterm oxygen therapy is often considered the main treatment option.
In chronic respiratory disease crd ph is precapillary, due to an increase of pulmonary vascular resistance pvr. Therefore heart secondary to relating to the lungs. Early effects of oxygen administration and prognosis in chronic obstructive pulmonary disease and cor pulmonale. Pulmonary hypertension results in right ventricular enlargement and may lead with time to right heart failure. Main causes of death are cor pulmonale, lower respiratory tract infection and sudden death. It can be a complication of several lung conditions including chronic obstructive pulmonary disease copd and pulmonary embolism. Request pdf pathogenesis of chronic cor pulmonale in copd although cor pulmonale represents a leading cause of death in advanced copd, there is no clear consensus on its definition. Cor pulmonale parvus in chronic obstructive pulmonary disease and emphysema. Variability of the pulmonary vascular response to acute hypoxia in chronic bronchitis. The main reason is that right heart catheterization rhc cannot be performed on a large scale in.
May 02, 2017 cor pulmonale is diagnosed using both a physical exam and medical testing. Recurrent infections, central apnea, bronchial hyperreactivity cardiovascular. The presence of hyperexpanded emphysematous lungs within the chest. Although most often caused by parenchymal lung disease, derangements of the ventilatory drive, the respiratory pumping mechanism, or the pulmonary vascular bed may also result in right ventricular hypertrophy and dilatation. Chronic cor pulmonale or chronic pulmonary hypertensive. Since this definition does not indicate the presence of right heart.
Pdf pathophysiology of cor pulmonale in chronic obstructive pulmonary disease. Inasmuch as the cardiac involvement is rooted in the underlying pulmonary dysfunction, therapyif it is to be successfulmust be directed at both pulmonary and cardiac aspects of the disease. Request pdf pathogenesis of chronic cor pulmonale in copd although cor pulmonale represents a leading cause of death in advanced copd, there. Acute cor pulmonale is a life threatening condition, but it is treatable with prompt medical attention. The pathophysiology of pulmonary heart disease cor pulmonale has always indicated that an increase in right ventricular afterload causes rv failure pulmonary vasoconstriction, anatomic disruptionpulmonary vascular bed and increased blood viscosity are usually involved, however most of the time, the right ventricle adjusts to an overload in chronic pressure. The immediate result of a high degree of occlusion of the pulmonary artery is sudden dilatation of the right ventricle and right auricle, which may best be termed acute cor pulmonale in contrast to the well known cor pulmonale of chronic nature associated with progressive enlargement of the right side of the heart secondary to certain pulmonary diseases. The term cor pulmonale is still very popular in the medical literature, but its definition varies and there is presently no consensual definition. I remember first being introduced to the term cor pulmonale in medical school, which was used to describe right heart failure due to chronic lung disease, and i still have a mental picture of the typical patient as a former heavy. Apr 03, 2018 chronic cor pulmonale is manageable, but the prognosis is that of the underlying lung disease. Forty years ago an expert committee of the world health organization1 defined cor pulmonale as hypertrophy of the right ventricle resulting from diseases affecting the function andor structure of the lungs. Cor pulmonale is estimated to cause approximately 5% to 7% of all types of heart disease in adults, and chronic obstructive pulmonary disease copd due to chronic bronchitis or emphysema is the causative factor in more than 50% of. Conditions that may complicate cor pulmonale include valvular heart disease and congestive heart failure. Cor pulmonale is right ventricular enlargement secondary to pulmonary hypertension. Dec 15, 2017 the pathophysiology of cor pulmonale is a result of increased rightsided filling pressures from pulmonary hypertension that is associated with diseases of the lung.
In persons more than 50 years of age, cor pulmonale, the consequence of untreated pulmonary hypertension, is the third most. Cor pulmonale right heart failure symptoms, treatment. In general, once signs of congestive heart failure appear, the life expectancy is two to five years. The result will be acute right ventricular dilatation and failure, its severity depending primarily on the degree of acute pa hypertension. Cor pulmonale is defined as a failure of the structure and function of the right ventricle in the absence of left ventricular dysfunction. Cor pulmonale is diagnosed using both a physical exam and medical testing. Cor pulmonale definition of cor pulmonale by medical dictionary. Pathophysiology of cor pulmonale in chronic obstructive. From the department of medicine, columbia university, college of physicians and surgeons, and the cardiopulmonary laboratory of the first medical and chest services columbia university division, bellevue hospital, new york, n. Cor pulmonale is a condition that causes the right side of the heart to fail.
It is caused by an underlying primary disorder of the respiratory system. As medlineplus national institutes of health explains it, normally, the left side of the heart produces a higher blood pressure in order to pump blood to the body. The diagnosis of cor pulmonale, heart disease secondary to lung disease, calls for close cooperation between the chest physician and the cardiologist. A chinese study indicated that chronic cor pulmonale is one of the major risk factors for early hospital readmission in patients following hospitalization for acute exacerbation of copd. Pathogenesis of chronic cor pulmonale in copd request pdf. Longterm high blood pressure in the arteries of the lung and right ventricle of the heart can lead to cor pulmonale. Longterm oxygen therapy ltotnocturnal oxygen therapy not have been shown to improve quality of life and survival in patients with severe chronic hypoxia due to lung disease, by reducing pulmonary arteriolar constriction. Jan 20, 20 journal presentations chronic cor pulmonale in delhi. The pathophysiology of cor pulmonale is a result of increased rightsided filling pressures from pulmonary hypertension that is associated with diseases of the lung. I remember first being introduced to the term cor pulmonale in medical school, which was used to describe right heart failure due to chronic lung disease, and i still have a mental picture of the typical patient as a former heavy smoker, dyspneic at rest.
Cor pulmonale occurs when the blood pressure in the pulmonary arterywhich carries blood from the heart to the lungsincreases and leads to the enlargement and subsequent failure of the right side of the heart. Cor pulmonale due to obstructive sleep apnoea cause longterm carbon dioxide retention even in the absence oflung disease, and the co2 retention in this circumstance can be reversed by preventing sleep apnoea, with nasal cpap2 although this patients osa requires longterm treatment with nocturnal nasal cp ap, his daytime hypoxaemia, hypercapnia and. Chronic obstructive pulmonary disease, left ventricular dys. The pathophysiology of pulmonary heart disease cor pulmonale has always indicated that an increase in right ventricular afterload causes rv failure pulmonary vasoconstriction, anatomic disruptionpulmonary vascular bed and increased blood viscosity are usually involved, however most of the time, the right ventricle adjusts to an overload in. Pdf pulmonary hypertension and chronic cor pulmonale in copd. Electrocardiographic signs of chronic cor pulmonale.
In acute cor pulmonale the afterload to the right ventricle can rise in a matter of minutes e. The presence of peripheral edema in cor pulmonale is almost invariably associated with hypercapnia. Survival is significantly longer when caused by uncomplicated emphysema. The longterm effects of hypoxic pulmonary vasoconstriction upon the right side of the heart, causing pulmonary hypertension and subsequent right atrial and right ventricular hypertrophy i. Chronic cor pulmonale is manageable, but the prognosis is that of the underlying lung disease. Ecg changes occur in chronic obstructive pulmonary disease copd due to. Cor pulmonale can be defined as pulmonary arterial hypertension resulting from diseases affecting the structure andor function of the lungs. The accessory muscles of respiration includesascalene musclesb sternocleidoid musclec trapezius and pectoralis muscled a, b and c 57. Cor pulmonale is rightsided hypertrophy of the heart caused by pulmonary hypertension, a primary disorder of the respiratory system. Managing pulmonary hypertension and cor pulmonale chronic obstructive pulmonary disease in over 16s. Cor pulmonale is a maladaptive response to pulmonary hypertension. Pulmonary hypertension and chronic cor pulmonale in copd. Cor pulmonale was classically defined as hypertrophy of the right ventricle resulting from diseases affecting the function andor structure of the lungs except when these pulmonary alterations are the result of diseases that primarily affect the left side of the heart who expert committee report 1963. Dec 30, 2016 similarly, in chronic cor pulmonale, treatment of the underlying cause is combined with specific management as below.
Your doctor will look for any abnormal heart rhythms, fluid retention, and protruding neck veins during a physical exam. Cor pulmonale is rightsided hypertrophy of the heart caused by pulmonary hypertension. Correction of abnormalities of gas exchange and ventilation can ameliorate pulmonary hypertension and improve survival. The study, by lin et al, of 692 patients, included 63 patients who were readmitted to the hospital within 31 days after discharge. No related items previous article next article 25 broadway. Part one american journal of respiratory and critical care medicine, 1503, pp. Unlike chronic cor pulmonale associated with long term high blood pressure in the arteries of the lung, acute cor pulmonale is a severe form of right ventricle failure caused by increased pulmonary vascular resistance or high pulmonary arterial pressure, signifying a poor prognosis for patients with acute respiratory distress syndrome ards 5. Cor pulmonale is a common type of heart disease as a result of its close association with copd, which has emerged, in recent years, as a leading cause of disability and death. Chronic obstructive pulmonary disease copd is the first cause of cor pulmonale, far before idiopathic pulmonary fibrosis and obesityhypoventilation syndrome. The treatment of chronic cor pulmonale circulation. Pulmonary hypertension results in right ventricular enlargement and. High blood pressure in the arteries of the lungs is called pulmonary hypertension. Cor pulmonale causes, symptoms, diagnosis, prognosis and. Pulmonary hypertension, cor pulmonale, bronchopulmonary shunts growth delay.
Cor pulmonale definition of cor pulmonale by medical. Ecg in chronic obstructive pulmonary disease litfl. Pathophysiology of cor pulmonale in chronic obstructive pulmonary disease. A person with cor pulmonale has a chronic cough, experiences difficulty in breathing after exertion, wheezes, and is weak and easily fatigued. Pulmonary hypertension and cor pulmonale knowledge for. Cor pulmonale, enlargement of the right ventricle of the heart, resulting from disorders of the lungs or blood vessels of the lungs or from abnormalities of the chest wall. Your doctor will look for any abnormal heart rhythms, fluid. It has a generally chronic and slowly progressive course, although acute onset or worsening with lifethreatening complications can occur.
An argument in favour of treatment is that pulmonary hypertension, pu,monale when modest during a stable period of the disease, may worsen, particularly during acute exacerbations, and these acute increases in pap can contribute to the development of rhf. The immediate result of a high degree of occlusion of the pulmonary artery is sudden dilatation of the right ventricle and right auricle, which may best be termed acute cor pulmonale in contrast to the well known cor pulmonale of chronic nature associated with progressive enlargement of the right side of the heart secondary to certain pulmonary. Cor pulmonale is usually chronic but may be acute and reversible. Cor pulmonale is the development of rightsided heart failure due to pulmonary hypertension.
469 1081 1401 653 1312 1236 329 1522 805 543 625 1393 423 1123 711 92 1444 616 1273 481 969 12 727 632 540 545 560 404 912 1363 1104 1359 615 1155 1213 643 374 1205