Nokea
Which of the following data sets can be analyzed on the ratio level of measurement?
- A. eye color
- B. pulse rates
- C. ethnicity
- D. gender
Correct Answer: B
Rationale: The correct answer is B: pulse rates. Pulse rates can be analyzed on the ratio level of measurement because they have a true zero point and allow for meaningful ratios to be calculated. This means that we can perform operations such as addition, subtraction, multiplication, and division on pulse rate data. In contrast, the other options (A: eye color, C: ethnicity, D: gender) are categorical data that do not have a true zero point and therefore cannot be analyzed on the ratio level. Eye color, ethnicity, and gender are all examples of nominal data which only allow for qualitative classification and do not have a numerical value that can be used in mathematical operations.
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A patient presents with severe sore throat, fever, and enlarged tonsils with exudate. Rapid antigen testing confirms group A beta-hemolytic Streptococcus (GAS) infection. Which of the following medications is the first-line treatment for this condition?
- A. Amoxicillin
- B. Azithromycin
- C. Cephalexin
- D. Clindamycin
Correct Answer: A
Rationale: The correct answer is A: Amoxicillin. Amoxicillin is the first-line treatment for GAS pharyngitis due to its effectiveness against Streptococcus bacteria. It is a penicillin-class antibiotic recommended by guidelines. Azithromycin is an alternative for patients allergic to penicillin. Cephalexin is not the first-line choice for GAS. Clindamycin is reserved for patients allergic to both penicillin and macrolides.
In providing tracheostomy care which of the following is the nurse's PRIORITY nursing action? The nurse ________.
- A. Cuts the dressing using sterile scissors
- B. Clean the incisions with iodine-based antiseptic
- C. Secures clean ties before removing soiled ones
- D. Uses clean technique
Correct Answer: C
Rationale: The correct answer is C: Secures clean ties before removing soiled ones. This is the priority action because securing clean ties prevents accidental dislodgement of the tracheostomy tube, ensuring the patient's airway remains patent. Cutting the dressing (A) or cleaning the incisions (B) can be important but not as critical as securing the tube. Using clean technique (D) is essential but not the priority in this situation.
What type of sampling wills Nurse Sandy adopts 11 when every third (3rd) patients with MI are selected after a random start?
- A. Simple random
- B. Stratified
- C. Systematic
- D. Cluster
Correct Answer: C
Rationale: The correct answer is C: Systematic sampling. Nurse Sandy is adopting systematic sampling by selecting every third patient with MI after a random start. This method ensures equal chance of selection for each patient and maintains randomness. In contrast, simple random sampling (A) entails each patient having an equal chance of being selected independently. Stratified sampling (B) divides patients into groups based on certain characteristics, which is not the case here. Cluster sampling (D) involves grouping patients and selecting entire groups, which is different from the individual selection in this scenario.
A patient presents with sudden-onset, painless vision loss in the right eye. Fundoscopic examination reveals a cherry-red spot at the macula and attenuated retinal vessels. Which of the following conditions is most likely responsible for this presentation?
- A. Central retinal artery occlusion
- B. Central retinal vein occlusion
- C. Retinal detachment
- D. Acute angle-closure glaucoma
Correct Answer: A
Rationale: The correct answer is A: Central retinal artery occlusion. This condition presents with sudden-onset, painless vision loss, cherry-red spot at the macula due to lack of blood flow, and attenuated retinal vessels. The cherry-red spot is due to the transparency of the fovea when there is ischemia in the surrounding retina. Central retinal vein occlusion (B) presents with sudden vision loss accompanied by retinal hemorrhages and dilated tortuous veins. Retinal detachment (C) typically presents with sudden flashes, floaters, and a curtain-like visual field defect. Acute angle-closure glaucoma (D) presents with severe eye pain, blurred vision, halos around lights, and a fixed mid-dilated pupil.
A biphasic anti-ovulatory medication of combined progestin and estrogen is prescribed for a female patient. What should the nurse include when teaching about this oral contraceptive?
- A. Restrict sexual activity temporarily.
- B. Report any irregular vaginal bleeding.
- C. Increase the intake of calcium.
- D. Have bi-monthly Pap smears.
Correct Answer: B
Rationale: The correct answer is B: Report any irregular vaginal bleeding. This is important because irregular vaginal bleeding can indicate potential issues such as breakthrough bleeding or hormonal imbalances, which may require adjustments to the contraceptive regimen. Other choices are incorrect because: A) Restricting sexual activity is not necessary with this medication, C) Increasing calcium intake is not directly related to taking biphasic anti-ovulatory medication, and D) Bi-monthly Pap smears are not specifically required due to this type of contraception.