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Pulmonary shunting causes the blood supply leaving a shunted area of the lung to have lower levels of oxygen and higher levels of carbon dioxide (i.e., the normal gas exchange does not occur). A pulmonary shunt occurs as a result of blood flowing right-to-left through cardiac openings or in pulmonary arteriovenous malformations.
Image shows early occurrence of tracheal deviation. Tracheal deviation is a clinical sign that results from unequal intrathoracic pressure within the chest cavity.It is most commonly associated with traumatic pneumothorax, but can be caused by a number of both acute and chronic health issues, such as pneumonectomy, atelectasis, pleural effusion, fibrothorax (pleural fibrosis), or some cancers ...
The left main bronchus departs from the trachea at a greater angle than that of the right main bronchus. The right bronchus is also wider than the left and these differences predispose the right lung to aspirational problems. If food, liquids, or foreign bodies are aspirated, they will tend to lodge in the right main bronchus.
In adults, the right lower lobe of the lung is the most common site of recurrent pneumonia in foreign body aspiration. [2] This is due to the fact that the anatomy of the right main bronchus is wider and steeper than that of the left main bronchus, allowing objects to enter more easily than the left side. [2]
Those suffering right-sided defects normally have poorer prognosis than those with left-sided defects, partly because the right side of the lung is usually more prone to infection considering the standard anatomical position of right bronchus, and also because cases with right-sided lung disorders have shown higher association rates with other ...
Increased perfusion in diseased lung would increase shunting and hypoxemia, resulting in worsening shortness of breath when lying on the affected lung. To maximize function of the healthier lung and to relieve dyspnea, the patient is best to lie on the side of the healthier lung, so that it receives adequate perfusion. Patients with chronic ...
The right lung is larger in size than the left, because of the heart's being situated to the left of the midline. The right lung has three lobes – upper, middle, and lower (or superior, middle, and inferior), and the left lung has two – upper and lower (or superior and inferior), plus a small tongue-shaped portion of the upper lobe known as ...
Atelectasis of the right lower lobe seen on chest X-ray. Clinically significant atelectasis is generally visible on chest X-ray; findings can include lung opacification and/or loss of lung volume. Post-surgical atelectasis will be bibasal in pattern. Chest CT or bronchoscopy may be necessary if the cause of atelectasis is not clinically ...