each small square on the ekg paper is

NCLEX-RN

NCLEX RN Predictor Exam

1. Each small square on the EKG paper is:

A. 0.04 seconds long and 5mm tall
B. 0.2 seconds long and 5mm tall
C. 0.04 seconds long and 20mm tall
D. 0.04 seconds long and 1mm tall

Correct answer: D

Rationale: Each small square on an EKG paper represents 0.04 seconds long and 1mm tall. This standardization is essential for accurate measurements. One large square on EKG paper consists of 5 small squares in length and 5 small squares in height, which equals 0.2 seconds long and 5mm tall (0.5 mV). Choice A is incorrect because while the duration is correct, the height mentioned is not accurate. Choice B is incorrect as it provides the correct height but the duration is inaccurate. Choice C is incorrect as the height mentioned is exaggerated, and the duration is correct but the height is not. Therefore, the correct answer is 0.04 seconds long and 1mm tall.

2. When are manual hematocrits done?

A. to monitor anemia
B. by using a microhematocrit tube.
C. to measure the percentage of plasma to cells.
D. All of the above.

Correct answer: D

Rationale: Manual hematocrits are performed to monitor anemia, which involves measuring the percentage of red blood cells in the blood. The process involves collecting blood in a microhematocrit tube, then centrifuging it to separate the plasma from the cells. By measuring the ratio of plasma to cells, healthcare providers can assess the patient's hematocrit level. Therefore, all the provided options are correct as they collectively describe the purpose and procedure of manual hematocrits.

3. The nurse is preparing to perform a physical assessment. The correct action by the nurse is reflected by which statement?

A. Performs the examination from both sides of the bed.
B. Examines tender or painful areas last to help relieve the patient's anxiety.
C. Follows a flexible examination sequence, considering the patient's age and condition.
D. Organizes the assessment to ensure that the patient does not change positions too often.

Correct answer: D

Rationale: The nurse should organize the assessment to minimize the patient's need to change positions frequently, ensuring efficiency and comfort. It is essential to perform the examination from both sides of the bed to facilitate a comprehensive assessment. Examining tender or painful areas last can help reduce patient discomfort and anxiety. The examination sequence should be flexible, taking into account the patient's age, condition, and specific needs. This approach allows for a tailored and patient-centered assessment, optimizing the quality of care provided.

4. Which of the following medical terms means 'surgical fixation of the stomach'?

A. Abdominorrhaphy
B. Gastroplasty
C. Gastropexy
D. Abdominorrhexis

Correct answer: C

Rationale: The correct answer is 'Gastropexy,' which means 'surgical fixation of the stomach.' This procedure involves surgically fixing the stomach in place. 'Abdominorrhaphy' refers to suturing or repairing the abdomen, not related to fixing the stomach. 'Gastroplasty' is a surgical reconstruction of the abdomen, not specifically related to fixing the stomach. 'Abdominorrhexis' refers to the rupture or tearing of the abdomen, not a surgical fixation procedure.

5. A patient is diagnosed with essential hypertension. Which of the following blood pressures would you expect to see in this patient prior to taking medications for the condition?

A. 142/92
B. 118/72
C. 120/80
D. 138/88

Correct answer: A

Rationale: Before starting medications for essential hypertension, a patient would typically present with a blood pressure reading equal to or greater than 140/90. This indicates high blood pressure and is characteristic of essential hypertension. Choice A, 142/92, falls within this range, making it the correct answer. Choices B (118/72), C (120/80), and D (138/88) all have blood pressure readings that are within the normal range and would not typically be expected in a patient diagnosed with essential hypertension. Therefore, choices B, C, and D are incorrect as they do not align with the elevated blood pressure levels seen in essential hypertension.