All patient teaching occurs in a formalized teaching session.

Choice A: Hyponatremia - Dehydration
Hyponatremia occurs when the sodium levels in the blood are abnormally low. While dehydration can contribute to hyponatremia, it is not the most common cause. Hyponatremia is more frequently caused by conditions that lead to an excess of water in the body, diluting the sodium levels. These conditions include heart failure, kidney disease, and the syndrome of inappropriate antidiuretic hormone secretion (SIADH).
Choice B: Hypomagnesemia - Chronic alcoholism
This is a correct pairing. Hypomagnesemia, or low magnesium levels in the blood, is often associated with chronic alcoholism. Alcoholism can lead to poor dietary intake of magnesium, increased urinary excretion of magnesium, and gastrointestinal losses due to vomiting and diarrhea. These factors contribute to the development of hypomagnesemia in individuals with chronic alcoholism.
Choice C: Hyperkalemia - Kidney failure
This is also a correct pairing. Hyperkalemia, or high potassium levels in the blood, is commonly caused by kidney failure. The kidneys are responsible for excreting excess potassium from the body. When the kidneys are not functioning properly, they cannot remove potassium efficiently, leading to its accumulation in the blood. Other causes of hyperkalemia include certain medications, such as potassium-sparing diuretics, and conditions that cause cellular breakdown, such as rhabdomyolysis.

Choice A: Alkalosis
Alkalosis occurs when the blood pH is higher than the normal range, specifically above 7.45. This condition indicates that the blood is too alkaline. Causes of alkalosis can include hyperventilation, loss of stomach acid through vomiting, or an overuse of diuretics. Since a blood pH of 7.21 is below the normal range, it does not indicate alkalosis.
Choice B: Normal Blood pH
The normal pH range for blood is between 7.35 and 7.45. This range is crucial for the body’s metabolic processes and enzyme functions. A blood pH of 7.21 is below this range, indicating an abnormal condition.
Choice C: Acidosis
Acidosis is the correct answer. It occurs when the blood pH drops below 7.35, indicating that the blood is too acidic. A pH of 7.21 is significantly below the normal range, confirming acidosis. This condition can result from various factors, including respiratory issues that lead to an accumulation of carbon dioxide or metabolic problems that increase acid production or decrease bicarbonate levels.
Choice D: Hyperkalemia
Hyperkalemia refers to an elevated level of potassium in the blood, not a change in blood pH. While hyperkalemia can be associated with acidosis, it is not defined by the pH level itself. Therefore, a blood pH of 7.21 does not directly indicate hyperkalemia.