Pulmonary 1 Flashcards
Fluoroscopy
Evaluation of stridor and abnormal movement of the diaphragm
Contrast studies
Useful for patients with recurrent pneumonia, persistent cough, tracheal ring, or suspected fistulas.
Bronchograms
useful in delineating the smaller airways
Pulmonary arteriograms
evaluation of the pulmonary vasculature
Radionuclide studies
evaluation of the pulmonary capillary bed
Asthma Bronchoconstriction pathophys
Bronchial smooth muscle contraction that quickly narrows the airways in response to exposure to a variety of stimuli, including allergens or irritants.
Asthma pathophysiology (
- Bronchoconstriction
- Airway hyperresponsiveness - Exaggerated bronchoconstriction response to stimuli
- Airway edema—As the disease becomes more persistent and inflammation becomes more progressive, edema, mucus hypersecretion, and formation of inspissated mucus plugs further limit airflow.
- Remodeling of the airways may occur
Bronchial Asthma (what it is and 2 types)
Chronic inflammatory disorder of the airways resulting in contraction of bronchial muscle
Types
- Extrinsic (atopic, allergic)
- Allergens: food, pollen, dust, etc. - Intrinsic (non-atopic)
- Initiated by infections, drugs, pollutants, chemical irritants
Asthma etiology (3)
- Gene-by-environment interactions are important to the expression of asthma.
- Atopy, the genetic predisposition for the development of an immunoglobulin E (IgE)-mediated response to common aeroallergens, is the strongest identifiable predisposing factor for developing asthma.
- Viral respiratory infections are one of the most important causes of asthma exacerbation and may also contribute to the development of asthma.
Asthma atopic triangle
- Asthma (at top of triangle)
- Allergic rhinitis
- Atopic dermatitis
Predicting Asthma in Young Frequent “Wheezers” (2 major criteria, 3 minor criteria)
Children less than 3 years of age with >3 episodes of wheezing per year and at least 1 major or 2 minor criteria:
Major Criteria:
- Parental asthma
- Eczema
Minor Criteria:
- Allergic rhinitis
- Wheezing apart from colds
- Eosinophilia >4%
Characteristics of Asthma (3)
- Airway Inflammation
- Airway Obstruction (reversible)
- Hyperresponsiveness (irritability of airways)
Four components of asthma management
- Measures of Asthma Assessment and Monitoring
- Education for a Partnership in Asthma Care
- Control of Environmental Factors and Comorbid Conditions that Affect Asthma
- Pharmacologic Therapy: The medications
To establish a diagnosis of asthma the clinician should determine…? (3)
- Episodic symptoms of airflow obstruction or airway hyperresponsiveness are present.
- Airflow obstruction is at least partially reversible.
- Alternative diagnoses are excluded.
Recommended methods to establish the diagnosis of asthma (4)
- Detailed medical history.
- Physical exam focusing on the upper respiratory tract, chest, and skin.
- Spirometry to demonstrate obstruction and assess reversibility, including in children 5 years of age or older.
- Additional studies to exclude alternate diagnoses
- Sweat test
Key Questions to Ask the Child and Parent (6)
- Which medicines is your child currently taking? How often?
- Who is responsible for administering the child’s medicine?
- Please show me how the child takes the medicine.
- How many times a week does the child miss taking the medication?
- What problems have you/your child had taking the medicine (cost, time, lack of perceived need)?
- What concerns do you have about your asthma medicines?