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ULTRASONOGRAPHY: Introduction, Principles, Indications, Advantages & Disadvantages
Sonography is a technique based on sound waves that acquires images in real time without the use of ionizing radiation. The phenomenon perceived as sound is the result of periodic changes in the pressure of air against the ear-drum. The periodicity of these changes ranges from 1500-20,000 Hz. Ultrasound has a periodicity greater than 20… Read more
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COPD (Chronic Obstructive Pulmonary Disease): Introduction, Clinical Features, Diagnosis & Management
Definition COPD is defined as a common preventable and treatable disease that is characterized by persistent respiratory symptoms and airflow limitation that is due to airway and/or alveolar abnormalities usually by significant exposure to noxious particles/ gases. Related diagnosis include: Chronic bronchitis and emphysema Extrapulmonary manifestation include; impaired nutrition, weight loss, skeletal muscle dusfunction Risk… Read more
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