NSG6420 GERONTOLOGY

Gerontology Class…. Week 1: 1. Question : The major impact of the physiological changes that occur with aging is: Reduced physiological reserve Reduced homeostatic mechanisms Impaired immunological response CORRECT All of the above Instructor Explanation: The major impact of all of these physiological changes can be highlighted with three primary points. First, there is a reduced physiological reserve of most body systems, particularly cardiac, respiratory, and renal. Second, there are reduced homeostatic mechanisms that fail to adjust regulatory systems such as temperature control and fluid and electrolyte balance. Third, there is impaired immunological function: infection risk is greater, and autoimmune diseases are more prevalent. (Kennedy-Malone 3) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 2. Question : Men have faster and more efficient biotransformation of drugs and this is thought to be due to: Less obesity rates than women Prostate enlargement CORRECT Less estrogen than women Instructor Explanation: Men have faster and more efficient biotransformation, presumably because of serum testosterone. Conditions of increased or decreased liver perfusion alter the overall level of the drug that is absorbed and how it is metabolized. (Kennedy-Malone 5) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 3. Question : The cytochrome p system involves enzymes that are generally: Inhibited by drugs NSG6420 GERONTOLOGY South University NSG6420 2 Induced by drugs CORRECT Inhibited or induced by drugs Associated with decreased liver perfusion Instructor Explanation: Biotransformation occurs in all body tissues but primarily in the liver, where enzymatic activity (cytochrome P [CYP] system) alters and detoxifies the drug and prepares it for excretion. (Kennedy-Malone 5) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 4. Question : Functional abilities are best assessed by: Self-report of function CORRECT Observed assessment of function A comprehensive head-to-toe examination Family report of function Instructor Explanation: Two well-established tools used to evaluate function in older adults are the Katz Activities of Daily Living Scale (Katz et al., 1963) and the Lawton and Brody scale for Instrumental Activities of Daily Living (Lawton & Brody, 1969). It is important to be cautious about selfreport of function (rather than direct observation of function) and to ask, “Do you …?” instead of “Can you …?” in order to determine if patients actually perform the activity. (Kennedy-Malone 40) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 5. Question : Iron Deficiency Anemia (IDA) is classified as a microcytic, hypochromic anemia. This classification refers to which of the following laboratory data? Hemoglobin and Hematocrit CORRECT Mean Corpuscular Volume (MCV) and Mean Corpuscular Hemoglobin (MCH) Serum ferritin and serum iron Total iron binding capacity and transferrin saturation South University NSG6420 3 Instructor Explanation: RBC indices reveal an MCV (mean corpuscular volume/RBC size) that will be decreased to 80 fL in adults; MCH (mean corpuscular hemoglobin/RBC color) will show hypochromia or pale cells; RBC distribution width (RDW)/volume variation will be increased. (Kennedy-Malone page 519) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 6. Question : When interpreting laboratory data, you would expect to see the following in a patient with Anemia of Chronic Disease (ACD): Hemoglobin 12 g/dl, MCV decreased, MCH decreased Hemoglobin 12 g/dl, MCV increased, MCH increased CORRECT Hemoglobin 12 g/dl, MCV normal, MCH normal Hemoglobin 12 g/dl, MCV decreased, MCH increased Instructor Explanation: Hemoglobin (Hgb): 12 g/dL (120 g/L) women 13 g/dL (130 g/L) men Rarely 10 g/dL (100 g/L) Mean corpuscular volume: 80–96 mcm3 (normocytic) Mean corpuscular hemoglobin Normochromic (normal color) RBC distribution width: normal (Kennedy-Malone page 517) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 7. Question : The pathophysiological hallmark of ACD is: Depleted iron stores CORRECT Impaired ability to use iron stores Chronic uncorrectable bleeding Reduced intestinal absorption of iron Instructor Explanation: The pathophysiological hallmark of ACD is a disregulation of iron homeostasis, characterized by an increased uptake and retention of iron within the cells of the reticuloendothelial system (liver/spleen), resulting in decreased RBC production. Essentially, iron is present but inaccessible for use in the production of Hgb with the erythrocytes (Bross et al., 2010). A shortened RBC survival is also a contributing factor to ACD. (Kennedy-Malone page 516-517) South University NSG6420 4 Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 8. Question : The main focus of treatment of patients with ACD is: Replenishing iron stores Providing for adequate nutrition high in iron CORRECT Management of the underlying disorder Administration of monthly vitamin B12 injections Instructor Explanation: Treatment: Treatment of ACD focuses on management of the underlying disorder. Iron supplementation is of no benefit in ACD, except in cases of coexisting IDA. A therapeutic trial of iron supplementation of no longer than 1 month may be useful in delineating between ACD and IDA. In ACD, there would be no hematological response to iron therapy (Chen & Gandhi, 2004). (Kennedy-Malone page 518) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Care of Older Adults. F.A. Davis Company, . VitalBook file. Question 9. Question : In addition to the complete blood count (CBC) with differential, which of the following laboratory tests is considered to be most useful in diagnosing ACD and IDA? Student Answer: Serum iron Total iron binding capacity Transferrin saturation CORRECT Serum ferritin Instructor Explanation: Treatment: Treatment of ACD focuses on management of the underlying disorder. Iron supplementation is of no benefit in ACD, except in cases of coexisting IDA. A therapeutic trial of iron supplementation of no longer than 1 month may be useful in delineating between ACD and IDA. In ACD, there would be no hematological response to iron therapy (Chen & Gandhi, 2004). (Kennedy-Malone page 518) Kennedy-Malone, Laurie, Kathleen Fletcher, Lori Martin-Plank. Advanced Practice Nursing in the Car