Nokea
The tendency of a drug to combine with its receptor is called:
- A. potency.
- B. efficacy.
- C. kinetics.
- D. affinity.
Correct Answer: D
Rationale: Affinity is a close relationship, mutual attraction, or similarity. The tendency of a drug to combine with its receptor is called affinity. Affinity is a measure of the strength of the drug-receptor bonding. Potency and efficacy describe the capability of a drug to produce the desired effect. Kinetics is the branch of science that deals with the effects of forces on the motions of material bodies or with changes in a physical or chemical system.
You may also like to solve these questions
A nurse assisting with data collection plans to perform the Romberg test. After describing the test to the client, the nurse tells the client that it will help reveal which disorder?
- A. Loss of hearing acuity
- B. A problem with balance
- C. A problem with distant hearing
- D. A problem discriminating high-pitched and low-pitched sounds
Correct Answer: B
Rationale: The Romberg test is a balance assessment that evaluates cerebellar function. During the test, the client stands with feet together and eyes closed, aiming to maintain balance for about 20 seconds. This test helps identify issues related to balance and proprioception, not hearing acuity or sound discrimination. Choices C and D are incorrect as the Romberg test focuses on balance, not distant hearing or sound discrimination.
A nurse is telling a pregnant client about the signs that must be reported to the health care provider. The nurse tells the client that the health care provider should be contacted if which occurs?
- A. Puffiness of the face
- B. Breast tenderness
- C. Morning sickness
- D. Urinary frequency
Correct Answer: A
Rationale: During pregnancy, it is important to be aware of danger signs that warrant contacting the healthcare provider. Puffiness of the face, especially around the eyes, can indicate a serious condition like preeclampsia. Other danger signs include vaginal bleeding, rupture of membranes, severe abdominal pain, visual disturbances, persistent vomiting, and changes in fetal movements. Morning sickness, breast tenderness, and urinary frequency are common symptoms of pregnancy and are not typically concerning unless they become severe or persistent, and do not usually require immediate medical attention.
After delivering a healthy newborn 1 hour ago, a nurse notes a woman's radial pulse rate is 55 beats/min. What action should the nurse take based on this finding?
- A. Reporting the finding to the healthcare provider immediately
- B. Helping the woman stay in bed and rest
- C. Documenting the finding
- D. Performing active and passive range-of-motion exercises
Correct Answer: C
Rationale: After delivery, bradycardia (pulse rate 50-70 beats/min) may occur, reflecting the large amount of blood returning to the central circulation after delivery of the placenta. The increase in central circulation results in increased stroke volume, allowing a slower heart rate to provide adequate maternal circulation. A pulse rate of 55 beats/min falls within the normal range post-delivery, so there is no need to notify the healthcare provider immediately. It is important for the client to remain on bed rest in the immediate postpartum period to prevent complications. While range-of-motion exercises are beneficial for a client on bed rest, it is not the priority based on the data provided. Therefore, the most appropriate nursing action is to document the finding for accurate record-keeping and monitoring of the client's condition.
When working with multicultural populations, the nurse should consider all of the following when planning care for a client with an altered sexuality pattern except:
- A. some Hispanic and Native-American cultures are very open when discussing sexuality.
- B. some cultures view the postpartum period as a state of impurity.
- C. some women in the African-American culture view childbearing as a validation of their femaleness.
- D. some Native-American women believe monthly menstruation maintains physical well-being and harmony.
Correct Answer: A
Rationale: When working with multicultural populations, it is essential to understand cultural variations in beliefs and practices related to sexuality. While it is true that some cultures view the postpartum period as a state of impurity and that some women in the African-American culture view childbearing as a validation of their femaleness, the statement 'some Hispanic and Native-American cultures are very open when discussing sexuality' is incorrect. In reality, many cultures, including Hispanic and Native-American cultures, are sometimes hesitant to discuss sexuality. For example, some Navajos, Hispanics, and Orthodox Jews may consider the postpartum period as impure, leading to seclusion of women until the end of bleeding, marked by a ritual bath. Additionally, many Native-American women believe in the importance of monthly menstruation for physical well-being and harmony. Therefore, the statement about Hispanic and Native-American cultures being very open about discussing sexuality is not accurate in the context of working with multicultural populations.
A nurse in the newborn nursery, assisting with data collection for a newborn, prepares to measure the chest circumference. The nurse places the tape measure around the infant at which location?
- A. In the axillary area
- B. At the level of the nipples
- C. Two inches below the nipples
- D. At the level of the umbilicus
Correct Answer: B
Rationale: The chest circumference of the infant is measured at the level of the nipples. It is usually 2 to 3 cm smaller than the head circumference. The average chest circumference is 30.5 to 33 cm (12-13 inches). When there is molding of the head, the head and chest measurements may be equal at birth. Placing the tape measure at the level of the nipples ensures accuracy and consistency in newborn assessment. Options A, C, and D are incorrect as the chest circumference is specifically measured at the level of the nipples to obtain precise measurements.