Pt has respiratory acidosis (low blood pH) due to his asthma exacerbation. What will the nurse expect to see?
No change in affinity of hemoglobin with oxygen
Decrease in affinity of hemoglobin with oxygen
Increase in affinity of hemoglobin with oxygen
Decrease in blood CO2
The Correct Answer is B
Choice A reason: Respiratory acidosis does not cause no change in affinity of hemoglobin with oxygen. It causes a decrease in affinity of hemoglobin with oxygen, which means that hemoglobin releases more oxygen to the tissues. This is known as the Bohr effect, which is a physiological response to low pH and high CO2 levels.
Choice B reason: Respiratory acidosis causes a decrease in affinity of hemoglobin with oxygen, which means that hemoglobin releases more oxygen to the tissues. This is the correct statement that describes the expected finding in this patient. The decrease in affinity of hemoglobin with oxygen is a compensatory mechanism that tries to restore the oxygen balance in the body.
Choice C reason: Respiratory acidosis does not cause an increase in affinity of hemoglobin with oxygen. It causes a decrease in affinity of hemoglobin with oxygen, which means that hemoglobin releases more oxygen to the tissues. An increase in affinity of hemoglobin with oxygen would mean that hemoglobin holds on to oxygen more tightly, which would worsen the hypoxia in the patient.
Choice D reason: Respiratory acidosis does not cause a decrease in blood CO2. It causes an increase in blood CO2, which is the primary cause of the low pH. A decrease in blood CO2 would indicate respiratory alkalosis, which is a condition of high pH and low CO2 levels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: ARBs do not affect the LDL cholesterol levels. They lower the blood pressure by blocking the action of angiotensin II, which is a hormone that causes vasoconstriction and sodium retention. Statins are the drugs that lower the LDL cholesterol levels.
Choice B reason: ARBs do not cause weight loss of more than 2 pounds/week. They lower the blood pressure by blocking the action of angiotensin II, which is a hormone that causes vasoconstriction and sodium retention. Diuretics are the drugs that cause weight loss by increasing the urine output and reducing the fluid volume.
Choice C reason: ARBs do not increase the urinary output. They lower the blood pressure by blocking the action of angiotensin II, which is a hormone that causes vasoconstriction and sodium retention. Diuretics are the drugs that increase the urinary output by inhibiting the reabsorption of sodium and water in the kidneys.
Choice D reason: ARBs lower the blood pressure by blocking the action of angiotensin II, which is a hormone that causes vasoconstriction and sodium retention. Therefore, a nursing assessment that confirms that the ARB that a patient is taking is effective is a decrease in the blood pressure. This is the correct statement that describes the expected outcome of ARBs.
Correct Answer is D
Explanation
Choice A reason: Albuterol is not used to treat acute allergies. It is a bronchodilator that relaxes the smooth muscles of the airways and improves airflow. Antihistamines are the drugs of choice for acute allergies.
Choice B reason: Albuterol is not used to treat nasal congestion. It is a bronchodilator that acts on the lungs, not the nose. Decongestants are the drugs of choice for nasal congestion.
Choice C reason: Albuterol is not used to treat dyspnea on exertion. It is a bronchodilator that is used for acute or chronic respiratory conditions, such as asthma or chronic obstructive pulmonary disease (COPD). Dyspnea on exertion is a symptom of various cardiac or pulmonary disorders that require further evaluation and treatment.
Choice D reason: Albuterol is used to treat acute bronchospasm. It is a bronchodilator that quickly relieves the symptoms of bronchoconstriction, such as wheezing, coughing, and shortness of breath. It is often prescribed as a rescue inhaler for patients with asthma or COPD.
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