Allergic Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Allergic and links to relevant pages within the course.
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| The cells present in this field may indicate what condition? | View Page |
| The cell in this slide could be caused by what condition? | View Page |
| Increased numbers of the cells shown at the right are indicative of what condition? | View Page |
| The most definite indication that a patient has been sensitized to a specific red cell antigen is: | View Page |
| Which of the following immunoglobulin classes is chiefly responsible for the degranulation of mast cells and basophils: | View Page |
| Eosinophilia is commonly found in which of the following disorder(s): | View Page |
| The fungus illustrated in this photomicrograph was recovered from an induced sputum specimen from a 74 year old man with chronic obstructive pulmonary disease. This isolate is most likely: | View Page |
| Match the characteristics with the cells. | View Page |
| Eosinophils in Parasitic Infections and Allergic Reactions Eosinophils are active in parasitic infections and in allergic reactions such as asthma and hay fever, and may be present in great numbers in the peripheral blood during these conditions.Stress, shock, or burns may also cause an increase in this type of cell.Eosinophils modulate an allergic response by liberating substances which can neutralize mast cell and basophil products. | View Page |
| Basophils as Mediators of Inflammatory Responses Basophils serve as mediators of inflammatory responses, especially hypersensitivity reactions.IgE binds to the membrane receptors on basophils and degranulation is initiated.The enzymes released are vasoactive, bronchorestrictive and chemotactic (especially for eosinophils), so basophils seem to play a role in inducing and maintaining allergic reactions.The granules of basophils contain histamine, heparin and peroxidase.After degranulation occurs, basophils can synthesize more granules.The release of large numbers of these granules can cause anaphylactic shock and death. | View Page |
| Basophils' primary role involves: | View Page |
| Eosinophils are increased in all of the following conditions EXCEPT: | View Page |
| Hypoallergenic Gloves If you are allergic to standard latex gloves, you will be provided with hypoallergenic gloves or alternative products such as glove liners at no cost to you. | View Page |
| Gloves Gloves must be worn for all procedures requiring vascular access.
Non-powdered latex gloves are most commonly used;
Alternatives available for health-care workers allergic to latex include:
Latex gloves sandwiched between 2 vinyl gloves.
Latex-free glove liners.Do not use latex gloves or tourniquets when collecting blood from patients with latex allergy. | View Page |
| Allergies Posted signs should alert you to patient allergies. Some patients may be allergic to latex gloves or tourniquets, or to iodine.Avoid using latex in case of allergy. Latex allergies are fairly common, and can be severe.
May health-care institutions have reduced the use of latex because of allergies, but complete elimination of latex in the hospital environment is difficult, since it is a component of many medical products. | View Page |
| Eosinophil description The cytoplasm of eosinophils is evenly filled by numerous orange-red granules of uniform size. They do not overlie the nucleus.The eosinophil granules contain numerous enzymes including peroxidase, phospholipase D, catalase, acid phosphatase, and vitamin B12-binding proteins.Their ability to kill bacteria is less than that of neutrophils. Their main purpose is to counteract parasitic infections and to participate in immune allergic reactions.They may also be increased in a variety of nonimmunologic inflammatory responses from bacteria and fungi causing chronic infections. Malignancies, collagen vascular diseases, and myeloproliferative disorders may also may be settings for prominent eosinophils. | View Page |