A nurse is assisting with the care of a patient who is receiving supplemental oxygen for hypoxia.
Which of the following findings should the nurse identify as an indication that the intervention was effective?

Choice A rationale:

Mitral valve stenosis is a condition characterized by a narrowing of the mitral valve in the heart, which can lead to a variety of symptoms. One of the most common symptoms of mitral valve stenosis is a heart murmur. This is due to the turbulent flow of blood caused by the narrowed valve. The murmur is typically heard during a physical examination when a healthcare provider listens to the heart with a stethoscope.

Choice B rationale:

Bradycardia, or a slower than normal heart rate, is not typically associated with mitral valve stenosis. While mitral valve stenosis can cause irregular heart rhythms, it does not typically cause the heart rate to slow down.

Choice C rationale:

Clubbing of the fingers is a physical symptom that involves changes in the areas under and around the nails and is typically associated with conditions that cause chronic low blood oxygen levels. While mitral valve stenosis can lead to shortness of breath and fatigue, it does not typically cause clubbing of the fingers.

Choice D rationale:

A barrel chest, characterized by an increased chest diameter, is typically associated with conditions that cause chronic overinflation of the lungs, such as chronic obstructive pulmonary disease (COPD). It is not a typical symptom of mitral valve stenosis.

In conclusion, while mitral valve stenosis can lead to a variety of symptoms, the most relevant to this question is a heart murmur. Other symptoms such as bradycardia, clubbing of the fingers, and a barrel chest are not typically associated with this condition.

Choice A rationale:

Wheezing is a common symptom of an allergic transfusion reaction. An allergic transfusion reaction occurs when the recipient’s immune system reacts to foreign proteins or allergens in the donor’s blood. Symptoms of an allergic reaction can range from mild to severe, and they typically include skin reactions such as hives and itching, as well as respiratory symptoms like wheezing. In severe cases, the reaction can cause difficulty breathing.

Choice B rationale:

Flank pain is not typically associated with an allergic transfusion reaction. It is more commonly a symptom of conditions affecting the kidneys or urinary tract. While flank pain can occur in a hemolytic transfusion reaction due to the rapid destruction of red blood cells, it is not a symptom of an allergic reaction.

Choice C rationale:

Elevated blood pressure is not a typical symptom of an allergic transfusion reaction. Allergic reactions more commonly cause symptoms such as hives, itching, and respiratory symptoms like wheezing. In severe cases, an allergic reaction can actually lead to a drop in blood pressure.

Choice D rationale:

Distended neck veins are not a typical symptom of an allergic transfusion reaction. They are more commonly associated with conditions that cause increased pressure in the right side of the heart. While distended neck veins can occur in a transfusion reaction due to fluid overload, they are not a symptom of an allergic reaction.