Overview
What is the historical background of alpha1-antitrypsin deficiency (AATD)?
What is alpha1-antitrypsin deficiency (AATD)?
What is the pathophysiology of alpha1-antitrypsin deficiency (AATD)?
How common is alpha1-antitrypsin deficiency (AATD)?
What is the biochemical activity of alpha1-antitrypsin deficiency (AATD)?
How is antiprotease dysfunction characterized in alpha1-antitrypsin deficiency (AATD)?
What is the role of antiprotease deficiency in alpha1-antitrypsin deficiency (AATD)?
What is the role of environmental exposures in the etiology of alpha1-antitrypsin deficiency (AATD)?
What is the role of genetic factors in the etiology of alpha1-antitrypsin deficiency (AATD)?
How common is alpha1-antitrypsin deficiency (AATD) in the US?
What is the global prevalence of alpha1-antitrypsin deficiency (AATD)?
What are the race-related demographics of alpha1-antitrypsin deficiency (AATD)?
Is alpha1-antitrypsin deficiency (AATD) more common in men or women?
What are the age-related demographics of alpha1-antitrypsin deficiency (AATD)?
What is the prognosis of alpha1-antitrypsin deficiency (AATD)?
Which factors portend a poor prognosis in alpha1-antitrypsin deficiency (AATD)?
What are the mortality and morbidity rates of alpha1-antitrypsin deficiency (AATD)?
What is involved in the patient education on alpha1-antitrypsin deficiency (AATD)?
Presentation
What are the common symptoms of alpha1-antitrypsin deficiency (AATD) at initial presentation?
What is the clinical history of alpha1-antitrypsin deficiency (AATD)?
What are physical exam findings in alpha1-antitrypsin deficiency (AATD)?
What are the complications of alpha1-antitrypsin deficiency (AATD)?
DDX
What are the differential diagnoses for Alpha1-Antitrypsin (AAT) Deficiency?
Workup
What are the approach considerations in the workup of alpha1-antitrypsin deficiency (AATD)?
Which lab studies are indicated in the workup of alpha1-antitrypsin deficiency (AATD)?
When is phenotyping indicated in the workup of alpha1-antitrypsin deficiency (AATD)?
How is alpha1-antitrypsin deficiency (AATD) characterized in chest X-rays?
Which pulmonary function tests are indicated in the workup of alpha1-antitrypsin deficiency (AATD)?
What are the histologic findings in alpha1-antitrypsin deficiency (AATD)?
How is alpha1-antitrypsin deficiency (AATD) staged?
Treatment
When is transfer indicated for patients with alpha1-antitrypsin deficiency (AATD)?
What is the goal of alpha1-antitrypsin deficiency (AATD) management?
What is the role of smoking cessation in the treatment of alpha1-antitrypsin deficiency (AATD)?
How is lung function improved in patients with alpha1-antitrypsin deficiency (AATD)?
How are respiratory infections prevented in patients with alpha1-antitrypsin deficiency (AATD)?
What are the benefits of pulmonary rehab in patients with alpha1-antitrypsin deficiency (AATD)?
What are the benefits of supplemental oxygen in patients with alpha1-antitrypsin deficiency (AATD)?
How are deficient enzymes replaced in the treatment of alpha1-antitrypsin deficiency (AATD)?
How effective is IV augmentation therapy for the treatment of alpha1-antitrypsin deficiency (AATD)?
What is the role of lung transplantation in the treatment of alpha1-antitrypsin deficiency (AATD)?
What is the role of liver transplantation in the treatment of alpha1-antitrypsin deficiency (AATD)?
What are the dietary recommendations in the management of alpha1-antitrypsin deficiency (AATD)?
What are the activity recommendations in the treatment of alpha1-antitrypsin deficiency (AATD)?
How is alpha1-antitrypsin deficiency (AATD) prevented or minimized?
What is involved in the long-term monitoring of alpha1-antitrypsin deficiency (AATD)?
Guidelines
When is diagnostic testing for alpha1-antitrypsin deficiency (AATD) indicated?
What are the guidelines for the management of alpha1-antitrypsin deficiency (AATD)?
What are the SEPAR recommendations on alpha1-antitrypsin deficiency (AATD)?
Medications
What is the drug treatment for alpha1-antitrypsin deficiency (AATD)?
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Close-up chest radiograph of the right lower zone of a 39-year-old woman with alpha1-antitrypsin deficiency (AATD). Normal lung markings are absent in the costophrenic angle. Some lung markings are present in the pericardiac region, but even these are diminished.
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CT scan of the right middle and right lower lobes in a 38-year-old patient with alpha1-antitrypsin deficiency (AATD). Entire middle lobe and much of the lower lobe are emphysematous; normal lung structures have been replaced by abnormal airspaces. Only the posterior portions of the right lower lobe maintain a normal architecture.
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Graph outlines alpha1-antitrypsin levels and risk of lung disease for the 5 most common phenotypes of alpha1-antitrypsin deficiency (AATD). Dashed line at 11 mmol/L (80 mg/mL) represents the threshold level below which emphysema is common.
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Breath sound assessment. Video courtesy of Therese Canares, MD, and Jonathan Valente, MD, Rhode Island Hospital, Brown University.