A nurse is assisting with the care of a client who is placed on supplemental oxygen for hypoxia. The nurse should identify that which of the following findings indicate the intervention was effective?

Choice A reason: Dry skin is not a sign of respiratory alkalosis. Respiratory alkalosis is a condition where the blood pH is too high due to excessive loss of carbon dioxide through rapid breathing. Dry skin can be caused by dehydration, cold weather, or skin conditions.

Choice B reason: Diarrhea is not a sign of respiratory alkalosis. Diarrhea is a condition where the stool is loose and watery due to increased intestinal motility or infection. Diarrhea can cause metabolic acidosis, which is a condition where the blood pH is too low due to excessive loss of bicarbonate.

Choice C reason: Abdominal pain is not a sign of respiratory alkalosis. Abdominal pain is a symptom that can have many causes, such as gastritis, appendicitis, or irritable bowel syndrome. Abdominal pain can also cause hyperventilation due to anxiety or discomfort, but it is not a direct result of respiratory alkalosis.

Choice D reason: Hyperventilation is a sign of respiratory alkalosis. Hyperventilation is a condition where the breathing rate is faster than normal, causing excess carbon dioxide to be expelled from the lungs. This lowers the partial pressure of carbon dioxide in the blood, which increases the blood pH and causes alkalosis. Hyperventilation can be caused by anxiety, fever, pain, or lung diseases.

Choice A reason: A heart murmur is a common finding in clients who have mitral valve stenosis. It is a sound produced by turbulent blood flow through the narrowed valve. The murmur is usually heard as a low-pitched rumbling sound during diastole.

Choice B reason: Bradycardia is not a typical finding in clients who have mitral valve stenosis. Bradycardia is a slow heart rate, usually below 60 beats per minute. Mitral valve stenosis can cause tachycardia, which is a fast heart rate, due to increased cardiac workload and reduced cardiac output.

Choice C reason: Clubbing of the fingers is not a sign of mitral valve stenosis. Clubbing is a deformity of the fingertips and nails that occurs due to chronic hypoxia. Mitral valve stenosis can cause pulmonary hypertension and pulmonary edema, which can impair gas exchange, but not to the extent of causing clubbing.

Choice D reason: Barrel chest is not a sign of mitral valve stenosis. Barrel chest is a condition where the chest is enlarged and rounded due to chronic lung disease. Mitral valve stenosis can affect the lungs by increasing the pressure in the pulmonary circulation, but it does not cause structural changes in the chest wall.