A nurse is caring for a client who has an NG tube. The nurse tests the pH of the secretions to determine if the tube is correctly placed. Which of the following readings should the nurse expect?

pH 1-4

pH 5-7

pH 8-10

pH 11-14

Answer and Explanation

The Correct Answer is A

A reason:

A pH reading of 1-4 is expected for gastric contents. This acidic range indicates that the NG tube is correctly placed in the stomach, where gastric secretions have a low pH due to hydrochloric acid.

B reason:

A pH reading of 5-7 is more indicative of respiratory secretions or the contents of the small intestine, not the stomach. This range suggests that the NG tube may be incorrectly placed.

C reason:

A pH reading of 8-10 is too alkaline for gastric contents and indicates incorrect tube placement. This range could suggest the presence of intestinal or respiratory secretions, not gastric.

D reason:

A pH reading of 11-14 is highly alkaline and unlikely to be encountered in clinical practice for this purpose. Such a high pH is not compatible with gastric contents and suggests a significant error or contamination in the test.

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Correct Answer is D

Explanation

A reason:

Troponin levels are not directly related to malnutrition. Troponin is a cardiac biomarker used to diagnose myocardial infarction (heart attack) and other heart-related conditions.

B reason:

Total bilirubin is primarily used to assess liver function and diagnose conditions like jaundice and liver disease. It is not specifically related to nutritional status.

C reason:

Creatine kinase is an enzyme found in the heart, brain, and skeletal muscle. Elevated levels can indicate muscle damage but are not directly associated with malnutrition.

D reason:

Albumin is a protein made by the liver, and its levels can be significantly affected by malnutrition. Low albumin levels are often seen in individuals with poor nutritional status, as adequate protein intake is essential for maintaining normal albumin levels.

A. Blood pressure. B. Cyanosis. C. Nausea. D. Petechiae.

Correct Answer is C

Explanation

A reason: Blood pressure. Blood pressure is an objective measurement that can be quantitatively assessed using a sphygmomanometer. It is not considered subjective data because it does not rely on the client's perception or feelings.

B reason: Cyanosis. Cyanosis, or the bluish discoloration of the skin, is an observable physical sign that can be assessed by the healthcare provider. It is considered objective data, not subjective.

C reason: Nausea. Nausea is a subjective symptom reported by the client. It is based on the client's personal experience and cannot be directly observed or measured by the healthcare provider, making it subjective data.

D reason: Petechiae. Petechiae are small, red or purple spots on the skin caused by minor bleeding. These are observable and measurable physical signs, thus considered objective data.

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A nurse is caring for a client who has an NG tube. The nurse tests the pH of the secretions to determine if the tube is correctly placed. Which of the following readings should the nurse expect?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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