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18 Cards in this Set

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  • Back
Common Causes of Restrictive Ventilatory Defects: Interstitial Lung Disease
Interstitial pneumonitis
Fibrosis
Pneumoconiosis
Granulomatosis
Oedema
Common Causes of Restrictive Ventilatory Defects: Space-occupying lesions
Tumour
Cysts
Common Causes of Restrictive Ventilatory Defects: Pleural Diseases
Pneumothorax
Haemothorax
Pleural effusion, empyema
Common Causes of Restrictive Ventilatory Defects: Chest-wall Diseases
Injury
Kyphoscoliosis
Spondylitis
Common Causes of Restrictive Ventilatory Defects: Extrathoracic conditions
Obesity
Peritonitis
Ascites
Pregnancy
Restrictive Ventilatory Defect: Characteristics
Decreased VC
Relatively normal expiratory flow rates
Relatively normal MVV
(A-a)PO2
Alveolar-arterial PO2 difference
MVV
Maximal voluntary ventilation
TLC
Total lung capacity. At TLC, the expanding action of inspiratory musculature is limited primarily by the inward elastic recoil of the lung.
VC
Vital Capacity
Restrictive Ventilatory Defect: Supplemental data confirming restrictive pattern
Decreased TLC
Decreased lung compliance
Chronic alveolar hyperventilation
Increased (A-a)PO2
Abnormal distribution of inspired gas
Obstructive Ventilatory Defect: Characteristics
Normal or decreased VC
Decreased maximum expiratory airflow
Decreased MVV
Obstructive Ventilatory Defect: Supplemental Data Confirming Obstruction
Increased RV
Increased airway resistance
Abnormal distribution of inspired gas
Significant response to bronchodilator
Decreased DLCO
Decreased lung elastic recoil
DLCO
Diffusing capacity of the lung for carbon monoxide
RV
Residual volume. At RV, either outward recoil of the chest wall or closure of airways prevents further expiration.
Common Causes of Obstructive Ventilatory Defects: Upper Airway
Pharyngeal and larygeal tumours, oedema, infections
Foreign bodies
Tumours, collapse and stenosis of trachea
Common Causes of Obstructive Ventilatory Defects: Central and peripheral airway
Bronchitis
Bronchiectasis
Bronchiolitis
Bronchial asthma
Common Causes of Obstructive Ventilatory Defects: Parenchymal disease
Emphysema