A nurse is caring for a patient who has been prescribed a stool guaiac test.

The patient inquires about the purpose of the test.

How should the nurse respond?

Choice A rationale:

Iron supplements Iron supplements are commonly used to treat or prevent iron deficiency anemia. While beneficial in relieving iron deficiency, iron pills can cause side effects like constipation, diarrhea, nausea, vomiting, dark stools, stomach cramps, and a metallic taste. However, constipation is not the primary side effect of iron supplements.

Choice B rationale:

Magnesium-containing antacids Magnesium-containing antacids are used to relieve the symptoms of gastroesophageal reflux disease (GERD), heartburn, or indigestion. By neutralizing stomach acid, antacids relieve symptoms such as burning behind the breast bone or throat area caused by acid reflux, a bitter taste in the mouth, a persistent dry cough, pain when lying down, or regurgitation. While these antacids can cause diarrhea, they do not typically lead to constipation.

Choice C rationale:

Anticholinergics/Antispasmodics Anticholinergics and antispasmodics are used to relieve cramps or spasms of the stomach, intestines, and bladder. Some are used together with antacids or other medicines in the treatment of peptic ulcers. Others are used to prevent nausea, vomiting, and motion sickness. While these medications can cause a variety of side effects, constipation is not a primary side effect.

Choice D rationale:

Opioid narcotics Opioids, also known as narcotics, are a class of drugs healthcare providers prescribe to manage moderate to severe pain, as well as chronic coughing and diarrhea. Common side effects of narcotics include constipation, decreased sweating, dizziness, dry mouth, nose, throat, or skin. Therefore, opioid narcotics are the medication most likely to lead to constipation among the options provided.

Choice A rationale:

Metabolic alkalosis Metabolic alkalosis is a condition that occurs when your body has too many bases. It can occur due to prolonged vomiting, use of diuretics, or an overuse of antacids. In the context of Chronic Obstructive Pulmonary Disease (COPD), metabolic alkalosis is not typically a direct result of the disease. COPD primarily affects the respiratory system and does not directly cause an imbalance of bases in the body.

Choice B rationale:

Respiratory acidosis Respiratory acidosis is a condition that occurs when the lungs can’t remove enough carbon dioxide (CO2). This leads to a buildup of CO2 in the body, causing the pH of the blood to decrease and become more acidic. This is the most common acid-base imbalance seen in patients with COPD1. COPD can cause an alteration in respiratory exchanges, leading to retention of CO21. The consequence of hypercapnia due to alteration of gas exchange in COPD patients mainly consists in an increase of H+ concentration and development of respiratory acidosis.

Respiratory alkalosis Respiratory alkalosis is a condition that occurs when there is too little carbon dioxide in the body, often due to hyperventilation. In the context of COPD, this is less likely because COPD patients often have difficulty expelling carbon dioxide, not an excess of it being expelled.

Choice D rationale:

Metabolic Acidosis Metabolic acidosis occurs when the body produces too much acid, or when the kidneys are not removing enough acid from the body. This can occur due to conditions such as kidney disease, lactic acidosis, or ketoacidosis. While COPD can have wide-ranging effects on the body, it does not typically cause metabolic acidosis directly.