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Adventitious
abnormal sounds superimposed on breath sounds, including sibilant wheezes (formally called simply wheezes), sonorous wheezes (formally called rhonchi), crackles (formally called rales) and pleural friction rubs.
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Atelectasis
the collapse of alveoli, preventing the respiratory exchange of carbon dioxide and oxygen
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Bronchoscopy
procedure preformed by passing a bronchoscope or a flexible fiberoptic bronchoscope (the instrument of choice in most cases) allows visualization of the larynx, the trachea, and the bronchi.
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Cor pumonale
an abnormal cardiac condition characterized by hypertrophy of the right ventricle of the heart as a result of hypertension of the pulmonary circulation.
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Coryza
acute inflammation of the mucous membranes of the nose and accessory sinuses, usually accompanied by edema of the mucosa and nasal discharge.
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Crackles
- short, discrete, interrupted crackling or bubbling sounds that are most commonly heard during inspiration.
- sound like hairs being rolled between the fingers close to the ear.
- thought to occur when air is forced through respiratory passages narrowed by fluid, mucus or pus.
- associated with inflammation or infection of the small bronchi, bronchioles, and alveoli.
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Cyanosis
slightly bluish, grayish, slatelike or dark purple discoloration of the skin resulting from excessive amounts of deoxygenated hemoglobin in the blood.
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Dyspnea
shortness of breath or difficulty in breathing; may be caused by disturbances in the lungs, certain heart conditions, and hemoglobin deficiency
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Embolism
an abnormal circulatory condition in which an embolus (e.g. a foreign substance, blood clot, fat, air, or amniotic fluid) travels through the bloodstream and becomes lodged in a blood vessel
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Empyema
accumulation of pus in a body cavity, especially the pleural space
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Epistaxis
bleeding from the nose
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Exacerbation
an increase in the seriousness of a disease or disorder as marked by greater intensity in the signs or symptoms
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Extrinsic
caused by external factors, such as environmental allergens (pollen, dust, feathers, animal dander, foods, etc.)
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Intrinsic
caused by internal causes, not fully understood, but often triggered by respiratory tract infection.
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Hypercapnia
greater than normal amounts of carbon dioxide in the blood.
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Hypoventilation
the condition in which the amount of air that enters the alveoli and takes part in gas exchange is not adequate for the body's metabolic needs.
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Hypoxia
oxygen deficiency
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orthopnea
an abnormal state in which a person must sit or stand to breathe deeply or comfortably.
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Pleural friction rubs
low-pitched, grating or creaking, lung sounds that occur when inflamed pleural surfaces rub together during respiration.
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Pneumothorax
a collection of air or gas in the pleural space, causing the lung to collapse.
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Sibilant wheezes
musical, high-pitched, squeaking or whistling sounds, caused by the rapid movement of air through narrowed bronchioles.
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Sonorous wheezes
low-pitched, loud, course, snoring sounds heard on exhalation.
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Stertorous
harsh snoring sound
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Tachypnea
abnormally rapid rate of breathing.
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Thoracentesis
inserting a needlelike instrument into the pleural space and removing the fluid.
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Virulent
capable of causing disease.
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Lower respiratory tract
bronchial tree
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Nose
- filters, warms and moistens air as it enters the nares
- contains nasal septum that separates the nares
- lateral to the nasal cavities are three scroll like bones called turbinates or conchae which cause air to move over a larger surface area allowing more time for warming and moisturizing the air
- communicating with the nasal structures are paranasal sinuses called the frontal, maxillary, sphenoid and ethmoid cavities which are hallow areas that make the skull lighter and give voice resonance
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Pharynx
- throat
- 5 inches long extending from base of skull to the esophagus and situated just in front of the vertebrae
- passageway for food and air
- 3 subdivisions at the distal end of pharynx-nasopharynx, oropharynx and laryngopharynx
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Larynx
- organ of voice
- supported by nine areas of cartilage and connects the pharynx with the trachea
- largest area of cartilage is composed of two fused plated called the thyroid cartilage or adams apple
- contains the epiglottis a large leaf shaped area of cartilage, protects the larynx when swallowing
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Trachea
- windpipe
- tubelike structure that extends approximately 4.5 inches to the midchest where it divides into the right and left bronchi
- lies anterior to the esophagus and connects the larynx with the bronchi
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Bronchial tree
- as the trachea enters the lungs, it divides into the right and left bronchi
- right bronchus enter the right lung and is larger in diameter and more vertical in descent
- left bronchus enters the left lung smaller in diameter and slightly horizontal in position
- large bronchi continue to divide into smaller structures called bronchioles
- bronchioles divide into smaller tubelike structures called terminal bronchioles or alveolar ducts
- end structures of the bronchial tree are alveoli
- gas exchange takes place in alveoli
- each alveolus is surrounded by a blood capillary where diffusion of carbon dioxide and oxygen occurs
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