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Normal range for oxygen saturation via pulse oximeter is?

A.

80-100%

B.

93-100%

C.

90-100%

D.

95-100%

Answer and Explanation

The Correct Answer is D

A: An oxygen saturation range of 80-100% is incorrect. Saturation levels below 90% are considered low and may indicate hypoxemia, requiring medical attention.

B: An oxygen saturation range of 93-100% is generally acceptable, but the ideal range is slightly higher to ensure adequate oxygenation.

C: An oxygen saturation range of 90-100% includes levels that are borderline low. While 90% is often used as a threshold for concern, the optimal range is higher.

D: An oxygen saturation range of 95-100% is considered normal and indicates adequate oxygenation of the blood. This range ensures that tissues receive sufficient oxygen to function properly.


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Related Questions

Correct Answer is C

Explanation

A: Platelets are involved in blood clotting and do not transport oxygen.

B: Neutrophils are a type of white blood cell involved in the immune response and do not transport oxygen.

C: Hemoglobin is the protein in red blood cells that binds to oxygen and transports it from the lungs to the tissues throughout the body. It is essential for oxygen delivery to cells.

D: Lymphocytes are a type of white blood cell involved in the immune response and do not transport oxygen.

Correct Answer is B

Explanation

A: Auscultation, or listening for air injected into the tube, is not a reliable method for verifying feeding tube placement. It can lead to false positives and does not confirm the tube’s location accurately.

B: X-ray is the gold standard for verifying feeding tube placement. It provides a clear image of the tube’s position, ensuring it is correctly placed in the stomach or small intestine, reducing the risk of complications.

C: Aspiration of contents can help verify placement by checking the appearance and pH of the aspirate. However, it is not as definitive as an X-ray and can sometimes be inconclusive.

D: pH testing of aspirate can indicate whether the tube is in the stomach (acidic pH) or intestines (less acidic). While useful, it is not as reliable as an X-ray for confirming placement.

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