How is a balloon expandable stent deployed? The Palmaz stent is the prototypic balloon-expandable stent. Such stents come packaged either individually or premounted on a balloon. When the balloon is inflated, the stent expands to the diameter of the balloon. As the stent expands, it changes very little in length. The relatively constant size and …
What are the two general categories of stents? How do they differ? Improvements in biomedical engineering and metallurgy have helped expand the clinical applications for noncoronary stents. Although various commercial stents are available, they can be classified as either balloon-expandable or self-expandable. The characteristics of each type vary, making one type more suitable for certain …
French and gauge medical equipments A French (Fr) is a unit of measure of diameter that is often applied to catheters. 1 Fr is equal to one third of a millimeter. A 6 Fr catheter is therefore 2 mm in diameter. A gauge is also a unit used to measure diameter where higher gauge values …
What is the difference between Cobra 1 Cobra 2 and Cobra 3 catheters? A Cobra 1 catheter and a Cobra 2 catheter have the same general shape except that the radius of the secondary curve of the catheter is greater for the Cobra 2. A Cobra 3 catheter has the same general “cobra” shape, but …
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Characteristics of a diagnostic catheter Catheters may be selected for a specific application based on many characteristics. Although there are numerous catheters, experience and personal preference play a large role in the selection process. • Length: Catheters are available in various lengths, the most common being 65 cm and 100 cm. The appropriate length is based on …
possible options for the management of generalized urticaria? A patient with generalized urticaria can be treated with either diphenhydramine or epinephrine. Vital signs should be obtained, and the patient should be observed to ensure that a more severe reaction is not evolving. The reaction should be documented in the patient’s medical record.
Immediate options for management of bronchospasm The patient should be monitored closely, and oxygen should be administered by nasal cannula or face mask. Pharmacologic treatment may include albuterol or epinephrine. In severe cases, intubation may be required.