which fatty acid has carbons connected by two or more double bonds

ATI RN

Nutrition ATI Proctored Exam

1. Which type of fatty acid has carbon atoms connected by two or more double bonds?

A. Saturated fatty acids
B. Monounsaturated fatty acids
C. Trans fatty acids
D. Polyunsaturated fatty acids

Correct answer: D

Rationale: The correct answer is D. Polyunsaturated fatty acids. Polyunsaturated fatty acids have two or more double bonds in their carbon chains, making them less stable and more prone to oxidation. This characteristic distinguishes them from saturated fatty acids (Choice A), which have single bonds between carbon atoms providing stability. Monounsaturated fatty acids (Choice B) contain only one double bond, and trans fatty acids (Choice C) can have varying numbers of double bonds but are not specifically defined by having two or more double bonds.

2. A healthcare professional is reviewing the lab findings of a client who has Clostridium Difficile. Which of the following findings should indicate to the healthcare professional that the client is experiencing Fluid Volume Deficit?

A. Hct 53%
B. Potassium 3.5
C. Sodium 145
D. HbA1c 5

Correct answer: A

Rationale: An elevated hematocrit level (Hct 53%) indicates hemoconcentration, a sign of fluid volume deficit. Hct measures the percentage of red blood cells in the blood and increases when there is a decrease in plasma volume, as seen in fluid volume deficit. Choices B, C, and D do not directly relate to fluid volume status. Potassium and sodium levels are more indicative of electrolyte imbalances, while HbA1c reflects average blood sugar levels over the past 2-3 months and is not specific to fluid volume status.

3. In conducting a cleansing enema, how does the nurse position the client?

A. Right lateral position
B. Left lateral position
C. Right Sim's position
D. Left Sim's position

Correct answer: B

Rationale: In preparing a patient for a cleansing enema, the nurse typically positions the patient in the left lateral position. This position allows for the best flow of the solution due to the anatomical configuration of the colon. The right lateral position, right Sim's position, and left Sim's position are not typically used for this procedure. The rationale provided initially is incorrect as it pertains to lung expansion and postural drainage, which are not relevant to a cleansing enema procedure.

4. Which of the following is reflected in an ECG due to hypokalemia?

A. Tall T waves and Pathologic Q wave
B. Widening QRS Complex and U wave
C. None of the above
D. Both A and B

Correct answer: B

Rationale: Hypokalemia, a condition characterized by low levels of potassium in the blood, is reflected in an ECG by a widening QRS Complex and a U wave. This is because potassium plays a key role in the electrical activity of the heart, and its deficiency can lead to abnormalities in the heart's rhythm as represented by these specific changes on the ECG. Choice A is incorrect as tall T waves and pathologic Q waves are more commonly associated with hyperkalemia or myocardial infarction, respectively, rather than hypokalemia. Choices C and D are also incorrect as they do not accurately reflect the ECG changes caused by hypokalemia.