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The purpose of this study is to compare the ability of two types of white blood cells to eat dead host cells, and how this process affects their ability to protect the body from infection. The two cell types are monocytes, a cell in the bloodstream, and alveolar macrophages, a cell in the lung that is ultimately derived from monocytes
Volunteers, who may be veterans or non-veterans, will be screened by a series of questionnaires, chest X-ray, spirometry, EKG, blood work, and a complete history and physican examination by a study physician. Those who qualify for the study and agree via informed consent, will undergo a fiberoptic bronchoscopy on a separate day for the initial visit. Bronchoscopy is a procedure in which a flexible videoinstrument is passed via the nose or mouth, through the volcal cords and into the lungs. During the procedure, portions of the lungs will be washed ("lavaged") with a salt water solution, to collect the alveolar macrophages. This procedure involves conscious sedation, so that a driver is required on the day of the bronchoscopy. The entire procedure, including placement of an intravenous line to administer medications, local anesthetics, the bronchoscopy itself, and the recovery period, takes about 2.5-3 hours. The cells collected by bronchoscopy will be studied in the research laboratory, and used entirely in that procedure.
Observational Model: Case-Only, Time Perspective: Prospective
Chronic Obstructive Pulmonary Disease
Fiberoptic bronchoscopy, blood draw, intravenous catheter
VA Ann Arbor Healthcare System
Department of Veterans Affairs
Published on BioPortfolio: 2014-08-27T03:14:45-0400
The study contain result from comparison of diagnostic result about lung collapsibility by using lung ultrasonography as intervention compare to fiberoptic bronchoscopy as gold standard
The purpose of this study is to compare success rates of antegrade and retrograde intravenous (IV) catheters in their ability to aspirate 20 milliliter blood sample within a 2 minute time ...
Chronic respiratory diseases including chronic obstructive pulmonary disease (COPD), bronchiectasis (BE) or pulmonary fibrosis (PF) are usually not curable with damaged pulmonary structure...
Passing a bronchoscope through the airways frequently causes a stress response even though patients are sedated. This stress response is usually an increase in pulse and blood pressure, wh...
Tracheal intubation is one of the most common medical procedures performed in hospitals. On one hand, it is highly successful and easy to perform using a rigid laryngoscope. On the other h...
Establishing vascular access is a common neonatal intensive care unit procedure. The extended dwell peripheral intravenous (EPIV) catheter is a 6-cm and 8-cm silicone catheter for peripheral vein inse...
Interventional bronchoscopy plays a significant role in the treatment of various pulmonary diseases. Different endoscopic therapeutic modalities are available for the management of central airway obst...
Both iron deficiency and chronic inflammation are highly prevalent in patients with chronic kidney disease (CKD). The effect of intravenous iron infusion on mineral metabolism in CKD may be modified b...
Chronic respiratory diseases are determined by genetic predisposition, and environmental and socioeconomic variables. One genetic factor underlying susceptibility to such diseases can be the ABO blood...
A subcategory of CHRONIC OBSTRUCTIVE PULMONARY DISEASE. The disease is characterized by hypersecretion of mucus accompanied by a chronic (more than 3 months in 2 consecutive years) productive cough. Infectious agents are a major cause of chronic bronchitis.
A disease of chronic diffuse irreversible airflow obstruction. Subcategories of COPD include CHRONIC BRONCHITIS and PULMONARY EMPHYSEMA.
A condition associated with multiple episodes of sleep apnea which are distinguished from obstructive sleep apnea (SLEEP APNEA, OBSTRUCTIVE) by the complete cessation of efforts to breathe. This disorder is associated with dysfunction of central nervous system centers that regulate respiration. This condition may be idiopathic (primary) or associated with lower brain stem lesions; chronic obstructive pulmonary disease (LUNG DISEASES, OBSTRUCTIVE); HEART FAILURE, CONGESTIVE; medication effect; and other conditions. Sleep maintenance is impaired, resulting in daytime hypersomnolence. Primary central sleep apnea is frequently associated with obstructive sleep apnea. When both forms are present the condition is referred to as mixed sleep apnea (see SLEEP APNEA SYNDROMES). (Adams et al., Principles of Neurology, 6th ed, p395; Neurol Clin 1996;14(3):611-28)
The techniques used to draw blood from a vein for diagnostic purposes or for treatment of certain blood disorders such as erythrocytosis, hemochromatosis, polycythemia vera, and porphyria cutanea tarda.
Immunoglobulin preparations used in intravenous infusion, containing primarily IMMUNOGLOBULIN G. They are used to treat a variety of diseases associated with decreased or abnormal immunoglobulin levels including pediatric AIDS; primary HYPERGAMMAGLOBULINEMIA; SCID; CYTOMEGALOVIRUS infections in transplant recipients, LYMPHOCYTIC LEUKEMIA, CHRONIC; Kawasaki syndrome, infection in neonates, and IDIOPATHIC THROMBOCYTOPENIC PURPURA.
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells (in animals) – such as nutrients and oxygen – and transports waste products away from those same cells. In vertebrates, it is composed of blo...
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