A nurse is assessing a client's pulmonary artery wedge pressure (PAWP). The nurse should recognize that an elevated PAWP indicates which of the following complications?
Hypovolemia
Hypotension
Left ventricular failure
Cardiogenic shock
The Correct Answer is C
Rationale:
A. Hypovolemia: Hypovolemia causes a decrease in PAWP due to reduced circulating blood volume and inadequate venous return to the heart. A low PAWP reflects decreased left ventricular preload, not an elevated value.
B. Hypotension: Hypotension alone does not directly increase PAWP. In fact, low blood pressure often accompanies decreased cardiac filling pressures. Elevated PAWP typically occurs with fluid overload or impaired ventricular function rather than simple hypotension.
C. Left ventricular failure: An elevated PAWP indicates increased left-sided heart pressures due to ineffective left ventricular pumping. Blood backs up into the pulmonary circulation, leading to pulmonary congestion and edema.
D. Cardiogenic shock: In cardiogenic shock, PAWP can be elevated due to impaired contractility, but it is accompanied by low cardiac output and hypotension. While related, the elevated PAWP in cardiogenic shock results from the underlying left ventricular failure, which is the primary cause of the pressure increase.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. Ask an experienced nurse to assist with the procedure: Seeking assistance from an experienced nurse promotes patient safety and supports proper skill development. The newly licensed nurse can observe, perform the procedure under supervision, and ensure that the client receives competent care while staying within professional practice boundaries.
B. Delegate the task to an assistive personnel: Tracheal suctioning is a sterile and invasive procedure that requires nursing judgment and assessment, which are outside the scope of practice for assistive personnel.
C. Identify that the task is in the scope of RN practice and perform the suctioning: Although tracheal suctioning is within an RN’s scope, the nurse should not perform it independently without adequate training or supervision.
D. Refuse to take the assignment: Refusing the assignment entirely is inappropriate because the nurse has a duty to provide care within their level of competence. Instead, the nurse should seek guidance and supervision to safely complete the procedure.
Correct Answer is C
Explanation
Rationale:
A. Obtaining the initial assessment of assigned clients: The initial assessment requires nursing judgment and clinical decision-making, which are within the scope of practice of a registered nurse only. It involves data interpretation and establishing a baseline for care, tasks that cannot be delegated to assistive personnel.
B. Educating a client and family members on home care: Client and family teaching requires specialized nursing knowledge to ensure understanding and accuracy. This task involves evaluating learning needs and reinforcing critical information, responsibilities that cannot be legally delegated to assistive personnel.
C. Changing a nonsterile dressing: Assistive personnel can safely perform nonsterile procedures such as changing a clean dressing under the supervision of a nurse. This task involves routine care that does not require nursing judgment, making it appropriate for delegation.
D. Interpreting a client's diagnostic laboratory results: Interpretation of laboratory data involves analysis, clinical reasoning, and the ability to make informed nursing decisions. These actions fall strictly within the nurse’s professional scope of practice and cannot be delegated to assistive personnel.
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