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	Dr. Koop - Atelectasis- Health Encyclopedia and Reference
		Atelectasis is an abnormal condition characterized by the collapse of lung tissue, preventing the respiratory exchange of carbon dioxide and oxygen.
		Atelectasis - a collapsed or airless state of the lung - may be acute or chronic, and may involve all or part of the lung.
		Atelectasis in the newborn is treated by suctioning the trachea to establish an open airway, positive-pressure breathing, and administration of oxygen.
	www.drkoop.com /encyclopedia/93/440.html (591 words)

	eMedicine - Atelectasis : Article by Sat Sharma, MD, FRCPC, FACP, FCCP, DABSM
		The rate at which atelectasis develops and the extent of atelectasis depend on several factors, including the extent of collateral ventilation that is present and the composition of inspired gas.
		Platelike atelectasis probably occurs because of obstruction of a small bronchus and is observed in states of hypoventilation, pulmonary embolism, or lower respiratory tract infection.
		This is a segmental or subsegmental atelectasis that occurs secondary to visceral pleural thickening and entrapment of lung tissue.
	www.emedicine.com /med/topic180.htm (0 words)

	MedlinePlus Medical Encyclopedia: Atelectasis
		Atelectasis is the collapse of part or all of a lung.
		It is caused by a blockage of the air passages (bronchus or bronchioles) or by pressure on the lung.
		Mucus that plugs the airway, foreign objects (common in children) in the airway, and tumors that obstruct the airway may lead to atelectasis.
	www.nlm.nih.gov /medlineplus/ency/article/000065.htm (479 words)

	Atelectasis- Health Encyclopedia and Reference
		Atelectasis is an abnormal condition characterized by the collapse of lung tissue, preventing the respiratory exchange of carbon dioxide and oxygen.
		Atelectasis - a collapsed or airless state of the lung - may be acute or chronic, and may involve all or part of the lung.
		Atelectasis in the newborn is treated by suctioning the trachea to establish an open airway, positive-pressure breathing, and administration of oxygen.
	www.healthcentral.com /encyclopedia/408/440.html (656 words)

	Atelectasis - Pharmpedia
		Pleural disease, as in asbestosis, causes fibrosis and adhesion of the visceral pleura to the lung causing rounded atelectasis.
		The symptoms of atelectasis vary, depending upon the cause, rapidity of development, extent of lung involvement, presence or absence of infection etc. In a slowly developing atelectasis as in middle lobe syndrome, there may be no or minimal symptoms.
		In case of recurrent atelectasis and in those on mechanical ventilation, apart from identification and correction of the underlying cause, oxygen maintenance, antibiotics, correction of hemodynamic (fluid) nutritional and metabolic derangements should be undertaken.
	www.pharmpedia.com /Atelectasis (1465 words)

	Atelectasis \| Principal Health News
		Atelectasis is a collapse of lung tissue affecting part or all of one lung.
		Atelectasis is a potential complication following surgery, especially in individuals who have undergone chest or abdominal operations resulting in associated abdominal or chest pain during breathing.
		Causes of atelectasis include insufficient attemps at respiration by the newborn, bronchial obstruction, or absence of surfactant (a substance secreted by alveoli that maintains the stability of lung tissue by reducing the surface tension of fluids that coat the lung).
	www.principalhealthnews.com /topic/topic100586474 (971 words)

	Atelectasis - Health EncyclopediaNews Story - WNBC \| New York (Site not responding. Last check: )
		Atelectasis is the collapse of part or all of a lung.
		It is caused by a blockage of the air passages (bronchus or bronchioles) or by pressure on the lung.
		Mucus that plugs the airway, foreign objects (common in children) in the airway, and tumors that obstruct the airway may lead to atelectasis.
	www.wnbc.com /encyclopedia/6859303/detail.html (595 words)

	Chest radiographs of obstructive atelectasis
		Atelectasis of left upper lobe - tomogram of hilar vessels.
		Atelectasis was due to carcinoma of the right upper lobe bronchus.
		A similar appearance would be seen with atelectasis of the left lower lobe, unless the lobes were very shrunken and small.
	myweb.lsbu.ac.uk /dirt/museum/gs-second.html (1604 words)

	Get Information on Atelectasis Including Causes, Symptoms and Treatment
		Atelectasis: Is an incomplete expansion of lobules (clusters of alveoli) or lung segments may result in partial or complete lung collapse.
		Atelectasis can be present at birth (incomplete expansion of the lungs), or during adulthood (from a collapsed lung).
		Atelectasis secondary to an obstructing neoplasm may require surgery or radiation therapy.
	www.med-help.net /Atelectasis.html (0 words)

	Atelectasis: Lung and Airway Disorders: Merck Manual Home Edition
		In chronic atelectasis, the affected area is often characterized by a complex mixture of airlessness, infection, widening of the bronchi (bronchiectasis (see Bronchiectasis), destruction, and scarring (fibrosis).
		Atelectasis in these circumstances may be limited to only a portion of one lung, or it may be present throughout both lungs.
		In treatment of atelectasis due to deficient or ineffective surfactant, attention is directed at treating the low blood oxygen (often with mechanical ventilation or positive end expiratory pressure) and its effects promptly and at identifying and treating the underlying condition.
	www.merck.com /mmhe/sec04/ch048/ch048a.html (1266 words)

	Discovery Health :: Diseases & Conditions :: atelectasis
		Atelectasis is a condition in which part of the lung becomes airless and collapses.
		In some cases, a person may be able to reduce his or her risk for this condition by exercising regularly and by not smoking or breathing in second-hand smoke.
		Atelectasis is diagnosed by a person's symptoms and the physical exam findings.
	health.discovery.com /encyclopedias/illnesses.html?article=759 (667 words)

	Untitled Document
		Obstructive atelectasis is the most common type and results from reabsorption of gas from the alveoli when communication between the alveoli and the trachea is obstructed.
		The rate at which atelectasis develops and the extent of atelectasis depend on several factors, including the extent of collateral ventilation that is present and the composition of inspired gas.
		Cicatrization atelectasis results from diminution of volume as a sequela of severe parenchymal scarring and is usually caused by granulomatous disease or necrotizing pneumonia.
	uuhsc.utah.edu /rad/medstud/ChestCaseStudies/ChestCase25a.htm (635 words)

	Dr. M.J. Bazos, MD Patient Handout
		Atelectasis refers to the collapse of either part or all of a lung caused by blockage of the air movement through small or large bronchial tubes.
		Atelectasis can occur abruptly when thick mucous plugs fill the bronchial tubes or when foreign objects, such as peanuts or small toys, are accidentally inhaled.
		Atelectasis can develop more gradually when caused by tumors growing inside the bronchial tubes or by processes outside the lung pressing inward, such as tumors, enlarged blood vessels, lymph nodes, or fluid collections.
	www.healthcoachmd.com /handouts/atelectasis.html (506 words)

	atelectasis
		It is the duty of the nurse to prevent atelectasis.
		If the patient is given a general anesthesia and placed on a respirator during the surgical procedure, some degree of atelectasis is present when the patient is removed from the operating table.
		The classic signs and symptoms of hypoxia, such as cyanosis, tachypnea, shallow breathing, altered breath sounds, hypertension, and tachycardia, may not be readily evident in the postoperative patient and to wait for them to develop is unnecessary.
	www.baillement.com /atelectasis.html (1264 words)

	Discovery Health :: Diseases & Conditions :: atelectasis
		Atelectasis due to surgery should have no long-term effects.
		Chronic illnesses, such as emphysema or cystic fibrosis, may result in atelectasis that never completely resolves.
		People with congenital lung diseases, such as cystic fibrosis, may pass a risk of atelectasis on to their children.
	www.health.discovery.com /encyclopedias/illnesses.html?chrome=None&article=759&page=2 (380 words)

	UpToDate Atelectasis in children
		Atelectasis is also defined as collapse of alveolar spaces, generally of a magnitude severe enough to appear on a plain chest radiograph.
		In almost all cases, atelectasis is acquired and referred to as secondary; rarely, primary atelectasis caused by congenital abnormalities may be present from birth.
		The radiographic appearance of atelectasis and an overview of atelectasis in adults are discussed separately.
	patients.uptodate.com /topic.asp?file=pedipulm/8138 (445 words)

	Cheshire Medical Center / Dartmouth-Hitchcock Keene : Forums :: View topic - anyone been told their ct shows ...
		With regard to atelectasis, there are a variety of reasons that a portion of the lung collapses, such as tumor or infection.
		If, however, the atelectasis is due to a chronic infection, then that can be of concern if there is infection that does not go away easily.
		Atelectasis is very common in post surgery patients because they hurt and don't take deep breaths.
	www.cheshire-med.com /forums/viewtopic.php?t=2654&sid=482711825464ce300e6708f365720239 (1115 words)

	Bronchoscopy for atelectasis in the ICU : a case report and review of the literature - intense care unit CHEST - Find ... (Site not responding. Last check: )
		Atelectasis is a frequent complication seen in the ICU.
		Concern over prolonged atelectasis is that it may worsen hypoxemia through shunting and may predispose the patient to nosocomial pneumonia.
		Traditionally, the treatment of atelectasis in ICU patients has focused on suctioning with adjuncts such as chest physiotherapy and bronchoscopy.
	www.findarticles.com /p/articles/mi_m0984/is_1_124/ai_106096398 (879 words)

	Atelectasis : Wilmington, Delaware DE (Site not responding. Last check: )
		Atelectasis is the collapse of part or all of a lung by blockage of the air passages (bronchus or bronchioles), or by very shallow breathing.
		Secretions that plug the airway, foreign objects (common in children) in the airway, and tumors that obstruct the airway may lead to atelectasis.
		In an adult, small regions of atelectasis are usually not life-threatening, because unaffected parts of the lung compensate for the loss of function in the affected area.
	www.christianacare.org /1976.cfm (378 words)

	Chest_atelectasis (Site not responding. Last check: )
		Atelectasis (airless lung) is a condition in which part of the lung becomes airless and contracts.
		Atelectasis prevents the lung from being able to pass oxygen to the blood.
		If atelectasis is caused by a mucus plug or inhaled foreign object, it is curable when the plug or object is removed.
	www.glaciermedicaled.com /Chest/dz_atelectasis.html (643 words)

	Atelectasis - WrongDiagnosis.com
		Atelectasis: An area of collapse and airlessness in the lung.
		More detailed information about the symptoms, causes, and treatments of Atelectasis is available below.
		The full text of published medical book sections related to Atelectasis is available from the following published medical books for more detailed information about Atelectasis.
	www.wrongdiagnosis.com /a/atelectasis/intro.htm (0 words)

	AllRefer Health - Atelectasis (Partial Lung Collapse)
		Atelectasis is the collapse of part or all of a lung by blockage of the air passages (bronchus or bronchioles), or by very shallow breathing.
		Secretions that plug the airway, foreign objects (common in children) in the airway, and tumors that obstruct the airway may lead to atelectasis.
		In an adult, small regions of atelectasis are usually not life-threatening, because unaffected parts of the lung compensate for the loss of function in the affected area.
	health.allrefer.com /health/atelectasis-info.html (367 words)

	Atelectasis (Site not responding. Last check: )
		Atelectasis is defined as collapse of a part of the lung or the whole lung, where the alveoli are deflated, as distinct from pulmonary consolidation.
		The most common cause is post-surgical atelectasis, due to restricted breathing after abdominal surgery.
		Post-surgical atelectasis is treated by physiotherapy, focusing on deep breathing and encouraging coughing.
	www.ufaqs.com /wiki/en/at/Atelectasis.htm (117 words)

	vgn-ext-hidden_PubMed (Site not responding. Last check: )
		Atelectasis causes Alveolar Injury in Non-Atelectatic Lung Regions.
		However, neither the topographic nor mechanistic relationships between atelectasis and distribution of lung injury are known.
		In contrast, alveolar injury associated with atelectasis does not occur in those areas that are atelectatic, but occurs instead in remote non-atelectatic alveoli.
	www.plwc.org /portal/site/ASCO/menuitem.a3fb42726842a82627c4c291ee37a01d/?vgnextoid=d70b3608f9958010VgnVCM100000f2730ad1RCRD&index=n&pmid=16675780 (350 words)

	UpToDate Radiologic patterns of lobar atelectasis
		In cases of upper lobe atelectasis, tenting of the ipsilateral diaphragmatic pleura at the site of the inferior accessory fissure or, less commonly, at the site of insertion of the inferior pulmonary ligament forms a juxtaphrenic peak [6].
		In cases of lower lobe atelectasis, mediastinal shift can produce the superior triangle sign on the right side as well as characteristic changes on the left side [7].
		In cases of right upper lobe atelectasis due to a central mass or enlarged interlobar lymph node, the minor fissure retracts cranially with a lateral upward convexity and a medial caudal convexity.
	patients.uptodate.com /topic.asp?file=pulm_img/6119 (451 words)

	Uncommon Etiology Of Obstructive Atelectasis
		Conventional radiography suggested the possibility of dental aspiration and secondary post-obstructive atelectasis and pneumonitis, which was elegantly confirmed by helical CT. CT depicted the exact location of the molar tooth within the superior segment of the right lower lobe bronchus, facilitating subsequent bronchoscopic extraction and clinical recovery.
		Passive atelectasis is caused by parenchymal compression extrinsic to the lung tissue, such as a pleural effusion, pneumothorax, or hypovenilation, while an intraparenchymal mass may, itself, result in compressive atelectasis of an adjacent region of lung.
		However, it is often difficult radiographically to ascertain the precise source of the atelectasis and, especially in a supine individual, even more difficult to distinguish atelectasis from a pneumonic infiltrate.
	www.ispub.com /ostia/index.php?xmlFilePath=journals/ijim/vol1n1/tooth.xml (1134 words)

	ATELECTASIS
		Atelectasis is commonly seen immediately in the post-operative period in those who have undergone general anesthesia.
		Mild post-operative atelectasis is treated with deep breathing exercises and respiratory therapy.
		Atelectasis secondary to carcinoma will often be managed using bronchoscopy.
	www.medhelp.org /glossary/new/gls_0526.htm (102 words)

	Atelectasis \| World of Health
		Atelectasis is a potential complication following surgery, especially in people who have undergone chest or abdominal operations.
		Causes of atelectasis include insufficient attempts at respiration by the newborn, bronchial obstruction, and absence of surfactant (a substance secreted by alveoli that maintains the stability of lung tissue by reducing the surface tension of fluids that coat the lung).
		If atelectasis is caused by a mucus plug or inhaled foreign object, the patient usually recovers completely when the blockage is removed.
	www.bookrags.com /research/atelectasis-woh (745 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		It is a condition where the alveoli are deflated, as distinct from pulmonary consolidation.
		Outside of this context, atelectasis implies some blockage of a bronchiole or bronchus, which can be within the airway (foreign body, mucus plug), from the wall (tumor, usually SCC) or compressing from the outside (tumor, lymph node, tubercle).
		Another cause is poor surfactant spreading during inspiration, causing an increase in surface tension which tends to collapse smaller alveoli.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=atelectasis (178 words)

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