When performing postural drainage on a client with chronic obstructive pulmonary disease (COPD), which approach should the nurse use?
Explain that the client may be placed in five positions.
Perform the drainage immediately after meals.
Obtain an arterial blood gas (ABG) prior to the procedure.
Instruct the client to breathe shallow and fast.
The Correct Answer is A
Choice A rationale
Postural drainage involves placing the client in various positions to facilitate the drainage of secretions from different parts of the lungs. Typically, the client may be placed in five positions: head down, prone, right and left lateral, and sitting upright.
Choice B rationale
Performing postural drainage immediately after meals is not recommended as it can cause nausea, vomiting, and aspiration. It is best to perform the procedure before meals.
Choice C rationale
Obtaining an arterial blood gas (ABG) prior to the procedure is not a standard requirement for postural drainage. ABGs are typically obtained to assess the client’s respiratory status but are not necessary for the procedure itself.
Choice D rationale
Instructing the client to breathe shallow and fast is not appropriate for postural drainage. The client should be encouraged to breathe slowly and deeply to help keep the airways open and facilitate the drainage of secretions.
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Correct Answer is B
Explanation
Choice A rationale
An increase in B-lymphocytes and IgM is not how HIV suppresses the immune system. B-lymphocytes are responsible for producing antibodies, and IgM is a type of antibody. HIV primarily affects T-lymphocytes, specifically helper T-cells (CD4 cells), rather than B-lymphocytes.
Choice B rationale
The destruction of helper T-cells and CD4 cells is the primary mechanism by which HIV suppresses the immune system. HIV targets and infects these cells, leading to their depletion. Helper T-cells play a crucial role in coordinating the immune response, and their loss results in a weakened immune system, making the body more susceptible to infections and diseases.
Choice C rationale
A deficiency of cytotoxic T cells is not the primary mechanism by which HIV suppresses the immune system. Cytotoxic T cells (CD8 cells) are involved in directly killing infected cells, but the main impact of HIV is on helper T-cells (CD4 cells), which are essential for orchestrating the immune response.
Choice D rationale
The proliferation of suppressor T-cells is not how HIV suppresses the immune system. Suppressor T-cells (regulatory T cells) help regulate and control the immune response, but HIV primarily affects helper T-cells (CD4 cells), leading to their destruction and a weakened immune system.
Correct Answer is D
Explanation
Choice A rationale
Laying down on each side with knees bent and breathing from the abdomen is not an effective technique for improving gas exchange in emphysema patients.
Choice B rationale
Increasing the breathing rate for a full 30 seconds can lead to hyperventilation and is not recommended for improving gas exchange.
Choice C rationale
Raising hands above the head to expand the diaphragm is not a recognized technique for improving gas exchange in emphysema patients.
Choice D rationale
Drawing air in through the nose and exhaling slowly through pursed lips is an effective technique for improving gas exchange in emphysema patients. This method helps to keep the airways open longer and improves the removal of trapped air.