With regard to the estimation and interpretation of the recurrence of risks for genetic disorders, nurses should be aware that:
a. With a dominant disorder, the likelihood of the second child also having the condition is 100%.
b. An autosomal recessive disease carries a one in eight risk of the second child also having the disorder.
c. Disorders involving maternal ingestion of drugs carry a one in four chance of being repeated in the second child.
d. The risk factor remains the same no matter how many affected children are already in the family.
ANS: D
Each pregnancy is an independent event. The risk factor (e.g., one in two, one in four) remains the same for each child, no matter how many children are born to the family.
In a dominant disorder, the likelihood of recurrence in subsequent children is 50% (one in two). An autosomal recessive disease carries a one in four chance of recurrence. In disorders involving maternal ingestion of drugs, subsequent children would be at risk only if the mother continued to take drugs; the rate of risk would be difficult to calculate.
You might also like to view...
You are admitting an insulin-dependent patient to the same-day surgical suite for carpal tunnel surgery. You know that this patient may be at risk for which metabolic disorder?
A) Adrenal insufficiency B) Thyrotoxicosis C) Impaired acid base balance D) Hyperglycemia
A nurse realizes that a client received an incorrectly high dose of a medication. Prior to investigating the reason, the nurse checks for evidence of the medication's side effects with the client
This nurse's moral agency would be considered: 1. Expert. 2. Low. 3. Well developed. 4. Competent.
The nurse is discharging a client with a prescription for penicillin. The client asks the nurse how this antibiotic works. The nurse's response is based on the knowledge that the mechanism of action of this class of anti-infectives is:
Standard Text: Select all that apply. 1. inhibiting cell wall synthesis. 2. causing disruption of the cell wall, resulting in the cell absorbing water and lysing. 3. binding to specific proteins, resulting in the cell's inability to build a wall. 4. interfering with the transfer of ribonucleic acid (RNA). 5. changing the permeability of the cell membrane.
The liver has only one important responsibility, which is manufacturing bile
True False