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Its anterosuperior part (especially of the left side) not infrequently can bulge into the anterior mediastinum behind the upper sternal body and even touch its contralateral counterpart in forced inhalation, but the left and right pleurae do not communicate unless there is a significant injury (traumatic or iatrogenic) or disease process (e.g ...
Patients with chronic heart failure prefer to lie mostly on the right side, to enable a better blood return, whereby cardiac output is augmented. One exception is pleural effusion , in which the patients experience less dyspnea when lying on the side of the pleural effusion, instead of the healthy lung.
Acute decompensated heart failure is a worsening of chronic heart failure symptoms, which can result in acute respiratory distress. [66] High-output heart failure can occur when there is increased cardiac demand that results in increased left ventricular diastolic pressure which can develop into pulmonary congestion (pulmonary edema). [46]
In humans, the left and right lungs are completely separated by the mediastinum, and there is no communication between their pleural cavities.Therefore, in cases of a unilateral pneumothorax, the contralateral lung will remain functioning normally unless there is a tension pneumothorax, which may shift the mediastinum and the trachea, kink the great vessels, and eventually collapse the ...
A parasternal heave, lift, [1] or thrust [2] is a precordial impulse that may be felt (palpated) in patients with cardiac or respiratory disease. Precordial impulses are visible or palpable pulsations of the chest wall, which originate on the heart or the great vessels. [3]
An uncommon form of situs inversus is isolated levocardia, in which the position of the heart is not mirrored alongside the other organs. Isolated levocardia carries a risk of heart defects, and so patients with the condition may require surgery to correct them. In rarer cases such as situs ambiguus or heterotaxy, situs cannot be determined. In ...
In those with underlying heart or lung disease, effective control of congestive and respiratory symptoms can help prevent pulmonary edema. [37] Dexamethasone is in widespread use for the prevention of high altitude pulmonary edema. Sildenafil is used as a preventive treatment for altitude-induced pulmonary edema and pulmonary hypertension.
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
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