A nurse is attending to a patient with a bowel obstruction who has been prescribed a nasogastric tube. What steps should the nurse take during the insertion of the nasogastric tube?

Choice A rationale:

Pallor, or paleness, is not a typical sign of phlebitis. It can be associated with other conditions such as anemia, decreased blood flow, or shock. In the context of IV therapy, pallor at the insertion site might suggest a problem with blood flow, such as infiltration or a clot, but it's not a direct indication of inflammation.

Choice B rationale:

Coolness at the IV site is also not a characteristic sign of phlebitis. It could potentially suggest infiltration of the IV fluids into the surrounding tissues, but it's not a primary indicator of inflammation. Phlebitis typically involves warmth and redness due to the inflammatory response.

Choice C rationale:

Erythema, or redness, is the hallmark sign of phlebitis. It's caused by the dilation of blood vessels in the area as part of the inflammatory response. The redness is often accompanied by warmth, swelling, and tenderness along the vein.

Mechanism of erythema in phlebitis:

When the inner lining of the vein (endothelium) is irritated or damaged by the IV catheter, it releases inflammatory mediators. These mediators cause the blood vessels to dilate, leading to increased blood flow and redness in the area.

The redness is often more pronounced along the path of the vein, rather than just at the insertion site.

Choice D rationale:

Drainage from the IV site can be a sign of infection, but it's not a primary feature of phlebitis. If drainage is present, it's important to assess for other signs of infection, such as pus, fever, or increased pain.

Choice A rationale:

Removing the tube immediately upon patient gagging is not the most appropriate first step. Gagging is a common reflex during nasogastric tube insertion and can often be managed without removing the tube.

Premature removal could lead to unnecessary discomfort for the patient and potential delays in treatment.

The nurse should attempt to reposition the tube or have the patient sip water to facilitate passage before considering removal.

Choice B rationale:

Tucking the chin to the chest and swallowing are essential maneuvers that help guide the tube into the esophagus and reduce the risk of misplacement into the trachea.

These actions close off the airway and open the esophagus, creating a smoother path for the tube.

The nurse should instruct the patient to perform these actions during insertion to promote successful placement.

Choice C rationale:

While a supine position is often used for nasogastric tube insertion, it is not the most crucial factor for success.

Studies have shown that a high-Fowler's position (sitting upright with head elevated) may be equally effective and potentially more comfortable for patients.

The nurse should consider patient comfort and potential contraindications (such as respiratory distress) when choosing the most appropriate position.

Choice D rationale:

Measuring the tube from the nose tip to the navel is an outdated practice that can lead to inaccurate placement. The correct measurement is from the nose tip to the earlobe to the xiphoid process (NEX).

This landmark-based method provides a more reliable estimation of the distance to the stomach.