the first step in the scientific method is to
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Nursing Elites

ATI RN

ATI Nutrition Practice A

1. What is the first step in the scientific method?

Correct answer: B

Rationale: The first step in the scientific method is to make an observation and ask a question. This is because the scientific method is a systematic process of investigation that begins with observing a phenomenon or asking a question about it. This is followed by formulating a hypothesis (Choice C), designing and conducting an experiment to test the hypothesis (Choice A), and analyzing the results to reach a consensus or conclusion (Choice D). Therefore, choices A, C, and D are incorrect as they represent steps that occur after the initial observation and question.

2. Electrolytes create _____, which is caused by water following electrolytes within or between cells.

Correct answer: D

Rationale: Osmotic pressure is the force that drives water movement across cell membranes due to the presence of electrolytes, helping to balance fluid levels in the body. Choice A, 'energy,' is incorrect as electrolytes do not directly create energy. Choice B, 'active transport,' refers to the movement of molecules across a cell membrane requiring energy, not the movement of water. Choice C, 'passive diffusion,' is the process by which substances move from an area of higher concentration to lower concentration, not related to the movement of water following electrolytes.

3. In a patient with chronic kidney disease, which dietary modification is recommended?

Correct answer: B

Rationale: Reducing potassium intake is important for patients with chronic kidney disease to prevent hyperkalemia.

4. This special form is used when the patient is admitted to the unit. The nurse completes the information in this record particularly his/her basic personal data, current illness, previous health history, health history of the family, emotional profile, environmental history as well as physical assessment together with nursing diagnosis on admission. What do you call this record?

Correct answer: C

Rationale: Effective nursing care involves comprehensive assessments that address all aspects of a patient's condition, ensuring that interventions are appropriately targeted and outcomes are optimized.

5. What is the glomerular filtration rate for patients with stage 5 chronic kidney disease (CKD)?

Correct answer: A

Rationale: In patients with stage 5 chronic kidney disease (CKD), also known as end-stage renal disease, the kidney function is significantly compromised. This severe condition is characterized by a glomerular filtration rate (GFR) of less than 15 mL/min/1.73 m�, as correctly stated in choice A. Choices B, C, and D suggest higher GFR values, which are not indicative of stage 5 CKD. Specifically, a GFR of less than 30 mL/min/1.73 m� indicates stage 4 CKD, less than 90 mL/min/1.73 m� signifies stage 3 CKD, and a typical healthy individual usually has a GFR of around 125 mL/min/1.73 m�, which is far above the GFR for stage 5 CKD.

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