A client presents with chest pain, shortness of breath, and a recent history of diarrhea. Upon assessment, the nurse notes an irregular heart rhythm and low potassium levels in the lab results. What is the most appropriate nursing action to take next?

Assess the client's vital signs and reassess heart rhythm before taking further action

Document findings for future reference and take no immediate action

Administer potassium without consulting the healthcare provider

Initiate oxygen therapy immediately without further assessment

Answer and Explanation

The Correct Answer is A

Hypokalemia is a critical electrolyte imbalance that significantly alters the resting membrane potential of cardiac myocytes. This disruption in electrical conductivity can lead to life-threatening dysrhythmias, such as ventricular tachycardia or fibrillation, especially when accompanied by clinical symptoms like chest pain and an irregular pulse rate.

A. Assessing vital signs and reassessing the cardiac rhythm is the priority nursing action to determine the client's current hemodynamic stability. This objective data provides a baseline to evaluate the severity of the cardiac irritation and informs the urgency of the communication with the healthcare provider for intervention.

B. Documenting findings and taking no immediate action is inappropriate and dangerous in the presence of symptomatic hypokalemia and an irregular heart rhythm. Delaying intervention in a patient experiencing chest pain and shortness of breath could lead to rapid clinical deterioration or cardiac arrest due to electrical instability.

C. Administering potassium without a specific prescription from a healthcare provider is outside the legal scope of nursing practice. Potassium is a high-alert medication that requires precise dosing and monitoring. Furthermore, giving medications without an order violates safety protocols and puts the patient at risk for hyperkalemia.

D. Initiating oxygen therapy without further assessment is not the most appropriate "next" step. While oxygen may be indicated for shortness of breath, the primary physiological threat in this scenario is the cardiac arrhythmia caused by electrolyte depletion. Assessing the heart rhythm and vital signs must take precedence.

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Correct Answer is D

Explanation

Reasoning:

The human skeletal system utilizes diarthrosis mechanisms to facilitate high-range articulation and locomotion. These specialized structures contain a fibrous capsule lined with a membrane that secretes a lubricating medium, reducing frictional coefficients between epiphyses to protect the bone surfaces from repetitive mechanical wear and tear.

A. Ligaments are tough bands of fibrous connective tissue composed primarily of collagen fibers. Their primary physiological function is to connect bone to bone, providing stability to the joint and limiting abnormal movements, rather than acting as a fluid-filled capsule that facilitates the movement itself.

B. Cartilage is a resilient, avascular connective tissue found throughout the body. In joints, hyaline cartilage covers the articulating surfaces of bones to provide a smooth, low-friction environment. While it is essential for flexibility and shock absorption, it is a solid tissue, not a fluid-filled capsule.

C. Tendons are dense, regular connective tissues that serve the critical role of attaching skeletal muscles to bones. They function by transmitting the mechanical force of muscle contractions to the skeleton to initiate movement. Like ligaments, tendons are solid fibrous structures rather than encapsulated fluid volumes.

D. Synovial joints are characterized by the presence of a joint cavity filled with synovial fluid. This fluid-filled capsule acts as a lubricant and shock absorber, allowing for a wide range of motion and flexibility. The synovial membrane produces the fluid that nourishes the articular cartilage.

A. Client loses balance immediately with eyes closed B. Client requires assistance to stand C. Client sways significantly with eyes closed D. Client maintains balance with eyes closed

Correct Answer is D

Explanation

The Romberg test evaluates proprioception, vestibular function, and cerebellar integrity by removing visual cues. A negative result confirms that the dorsal columns of the spinal cord are effectively transmitting sensory input regarding limb position, allowing the patient to maintain an upright equilibrium using only vestibular and somatosensory feedback loops.

A. If a client loses balance immediately upon closing their eyes, this is considered a positive Romberg test. This finding suggests that the client is over-relying on visual input to maintain balance, indicating a potential deficit in the proprioceptive or vestibular systems that normally control upright posture and stability.

B. Requiring assistance to stand indicates a general gross motor deficit or significant weakness, but it is not the specific finding used to define a "negative" Romberg test. The test specifically looks at the ability to maintain a steady position without visual aid while standing independently and unaided.

C. Significant swaying or moving the feet to prevent a fall when the eyes are closed is the hallmark of a positive Romberg sign. This indicates that the sensory pathways in the spinal cord are not providing sufficient information to the brain about the body's position in space without visual confirmation.

D. A negative Romberg test is documented when the client is able to stand with feet together and arms at the sides, maintaining balance with minimal swaying for at least 20 seconds with the eyes closed. This indicates that the proprioceptive and vestibular pathways are functioning correctly to maintain posture.

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A client presents with chest pain, shortness of breath, and a recent history of diarrhea. Upon assessment, the nurse notes an irregular heart rhythm and low potassium levels in the lab results. What is the most appropriate nursing action to take next?

Nursing Test Bank

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Correct Answer is D

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Correct Answer is D

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