A nurse is caring for a patient who is experiencing nausea and vomiting.
The nurse should identify that the patient is at risk for which of the following acid-base imbalances?
Metabolic alkalosis
Respiratory acidosis
Metabolic acidosis
Respiratory alkalosis
The Correct Answer is A
Choice A rationale:
Metabolic alkalosis can occur in clients who have excessive vomiting because of the loss of hydrochloric acid. When a person vomits, they lose hydrochloric acid, and the loss of this acid can cause the blood to become more basic. This shift in pH can lead to metabolic alkalosis, a condition characterized by high levels of bicarbonate in the blood, which makes it more alkaline (or less acidic). Symptoms of metabolic alkalosis can include muscle twitching, hand tremor, nausea or vomiting, and tingling in the face, hands or feet. In severe cases, it can cause prolonged muscle contractions or seizures.
Choice B rationale:
Respiratory acidosis is a condition that occurs when the lungs can’t remove enough carbon dioxide (CO2) from the body, which causes the body’s fluids, especially the blood, to become too acidic. This can occur due to conditions that affect the lungs such as chronic obstructive pulmonary disease (COPD), asthma, or sleep apnea. However, in the case of a patient experiencing nausea and vomiting, respiratory acidosis is less likely to be the primary concern.
Choice C rationale:
Metabolic acidosis occurs when the body produces too much acid, or when the kidneys aren’t removing enough acid from the body. This can be caused by conditions such as kidney disease, lactic acidosis, or ketoacidosis. In the case of a patient experiencing nausea and vomiting, the primary concern would not typically be metabolic acidosis, as vomiting leads to a loss of stomach acid, which would more likely result in a state of alkalosis, not acidosis.
Choice D rationale:
Respiratory alkalosis is a condition that occurs when you breathe too fast or too deep and carbon dioxide levels drop too low. This causes the pH of the blood to rise and become too alkaline. When the blood is too alkaline, it means that it is not carrying enough carbon dioxide. This condition can be caused by fever, hyperventilation, or lack of oxygen. In the case of a patient experiencing nausea and vomiting, respiratory alkalosis is not typically the primary concern.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Prone The prone position, in which a patient lies facedown, is beneficial for patients with pneumonia as it helps shift the fluid away from the back of the lungs, allowing more air to enter. It also improves ventilation in the lungs and reduces the risk of lung collapse. However, this position is not the most effective for maximum lung expansion in pneumonia patients.
Choice B rationale:
Side-lying Lateral positioning, in which the patient lies on one side, is recommended for patients suffering from pneumonia in just one lung. In this position, the pneumatic lung is exposed to a higher blood flow, resulting in greater oxygenation levels and improved lung expansion. This position can also help prevent lung injury by helping regulate pressure and improve aeration.
But again, this is not the most effective position for maximum lung expansion in pneumonia patients.
Choice C rationale:
Supine The supine position, where the patient lies flat on their back, is not the best position for a pneumonia patient. This position can cause the secretions to pool in the lungs, making it harder for the patient to breathe and potentially worsening their condition. Choice D rationale:
Upright Elevating the head of the bed is an effective way to improve lung expansion and oxygenation levels in pneumonia patients. This position also helps eliminate airway obstruction, reduces pressure on the lungs, and promotes drainage of fluids from the lungs. Therefore, the upright position is the most recommended for maximum lung expansion in pneumonia patients.
Correct Answer is B
Explanation
Choice A rationale:
The statement “The pulse oximeter may not be accurate during periods of excessive movement” is correct. Pulse oximeters measure the amount of oxygen in the blood by shining light through the skin, and movement can cause the light to scatter, leading to inaccurate readings.
Choice B rationale:
The statement “We will inform the doctor if the pulse oximeter consistently reads 100%” indicates further instruction is needed. A pulse oximeter reading of 100% is not necessarily a cause for concern. It simply means that the hemoglobin is fully saturated with oxygen. However, if the oxygen level is consistently at 100%, it could indicate that the oxygen flow is too high and needs to be adjusted. It’s important to follow the healthcare provider’s instructions regarding the desired oxygen saturation level for the infant.
Choice C rationale:
The statement “The probe of the pulse oximeter can be attached to a finger or a toe” is correct. The probe of a pulse oximeter can indeed be attached to a finger, toe, or even an earlobe. The important thing is that it’s attached to a part of the body with good blood flow. Choice D rationale:
The statement “We will move the probe of the pulse oximeter every 24 hours” is correct. It’s important to move the probe periodically to prevent skin damage, such as pressure sores or burns, especially in infants who have delicate skin.
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