preload refers to

NCLEX-RN

NCLEX RN Exam Prep

1. What does preload refer to?

A. The volume of blood entering the left side of the heart
B. The volume of blood entering the right side of the heart
C. The pressure in the venous system that the heart must overcome to pump the blood
D. The pressure in the arterial system that the heart must overcome to pump the blood

Correct answer: B

Rationale: Preload refers to the volume of blood that enters the right side of the heart. This volume stretches the fibers in the heart before contraction. Preload is an essential factor in determining the force of ventricular contraction. Choices A, C, and D are incorrect. Choice A is incorrect because preload is specifically related to the volume of blood entering the right side of the heart. Choices C and D are incorrect as they refer to afterload, which is the pressure that the heart must overcome to pump blood out of the ventricles into the systemic or pulmonary circulation.

2. During the implementation phase of the nursing process when working with a hospitalized adult, which of the following actions would the nurse take?

A. Formulate a nursing diagnosis of impaired gas exchange
B. Record in the medical record the distance a client ambulates in the hall
C. Write individualized nursing orders in the care plan
D. Compare client responses to the desired outcomes for pain relief

Correct answer: B

Rationale: During the implementation phase of the nursing process, the nurse is responsible for carrying out or delegating nursing interventions and documenting nursing activities and client responses in the medical records. Option A involves diagnosing, which is part of the nursing process's earlier phases. Option C pertains to planning, which precedes implementation. Option D relates to evaluation, which comes after the implementation phase.

3. The client often sighs and says in a monotone voice, 'I'm never going to get over this.' When encouraged to participate in care, the client says, 'I don't have the energy.' These cues are suggestive of which nursing diagnoses? Select all that apply.

A. Hopelessness
B. Power
C. Interrupted sleep pattern
D. Disturbed self-esteem

Correct answer: A

Rationale: A nursing diagnosis involves clinical judgment about a response to a health problem. In this scenario, the client's expressions of feeling overwhelmed and lacking energy indicate feelings of hopelessness and powerlessness. While fatigue is mentioned, there is no direct evidence to support an interrupted sleep pattern, making option C incorrect. Similarly, disturbed self-esteem and self-care deficit are not evident from the given cues, making options D and E incorrect.

4. Nursing care plans are _______________?

A. written by CNAs before they provide care
B. guidelines of care that all nursing team members use
C. used by nurses but not by nursing assistants
D. used by nursing assistants but not by nurses

Correct answer: B

Rationale: Nursing care plans are comprehensive documents created by registered nurses to outline individualized care for patients. These plans serve as guidelines for all members of the nursing team, including nursing assistants, to ensure consistent and quality care. Choice A is incorrect as CNAs typically assist in implementing the care plan rather than creating it. Choice C is incorrect as nursing care plans are utilized by all members of the nursing team, not exclusive to only nurses. Choice D is incorrect as nursing assistants also utilize nursing care plans to provide patient care effectively.

5. After receiving change-of-shift report, which patient should the nurse assess first?

A. A patient with pneumonia who has crackles in the right lung base
B. A patient with possible lung cancer who has just returned after bronchoscopy
C. A patient with hemoptysis and a 16-mm induration with tuberculin skin testing
D. A patient with chronic obstructive pulmonary disease (COPD) and pulmonary function testing (PFT) that indicates low forced vital capacity

Correct answer: B

Rationale: The correct answer is the patient with possible lung cancer who has just returned after bronchoscopy. After bronchoscopy, the patient may have decreased cough and gag reflexes, necessitating immediate assessment for airway patency to prevent potential complications. The other patients do not exhibit urgent clinical manifestations or have undergone recent procedures that require immediate attention. Therefore, they can be assessed after ensuring the safety and stability of the patient who has just returned after bronchoscopy.