Which type of laxative causes peristalsis by irritating the bowel?
Stool softener
Saline/osmotic laxative
Stimulant laxative
Bulk-forming laxative
The Correct Answer is C
A) Stool softener:
Stool softeners, such as docusate sodium, work by adding moisture to the stool, making it softer and easier to pass. They do not directly stimulate bowel movements or peristalsis through irritation of the bowel lining.
B) Saline/osmotic laxative:
Saline or osmotic laxatives, such as magnesium hydroxide (milk of magnesia) and polyethylene glycol (PEG), work by drawing water into the intestines, which softens the stool and increases bowel motility. They do not primarily act by irritating the bowel lining.
C) Stimulant laxative.
Stimulant laxatives work by directly stimulating the nerves in the intestines, which increases the rhythmic contractions of the intestines (peristalsis) and promotes bowel movements. These medications irritate the bowel lining, leading to increased motility and expulsion of stool. Examples of stimulant laxatives include bisacodyl and senna.
D) Bulk-forming laxative:
Bulk-forming laxatives, such as psyllium and methylcellulose, work by increasing the bulk and water content of the stool, which stimulates bowel movements. They do not directly irritate the bowel lining to promote peristalsis. Instead, they absorb water and swell in the intestines, creating a larger, softer stool that is easier to pass.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Increase dosing with a large meal:
Increasing the dosing with a large meal may not be appropriate as it could lead to overdosing and potential side effects. The dosage of pancrelipase should be determined by the healthcare provider based on the individual's needs and response to treatment. There's no evidence to support the need for increased dosing with larger meals.
B) Take the medication at least 2 hours prior to meals:
Taking the medication prior to meals may not be effective as the enzymes will not be available when food is consumed, which defeats the purpose of enzyme replacement therapy. The enzymes need to be present simultaneously with the food to aid in digestion. Waiting 2 hours before meals would mean the enzymes are not available when needed.
C) Take the medication with meals.
Pancrelipase, such as Cotazym, is a pancreatic enzyme replacement therapy used to aid in the digestion of fats, proteins, and carbohydrates in individuals with pancreatic insufficiency. Taking the medication with meals is crucial because it helps ensure that the enzymes are available to aid in the digestion of food. Without proper enzyme supplementation during meals, individuals with pancreatic insufficiency may experience malabsorption, leading to nutritional deficiencies and gastrointestinal symptoms.
D) Decrease fluid intake:
Decreasing fluid intake is not appropriate as it could lead to dehydration and may not have any significant impact on the efficacy of pancrelipase. In fact, adequate fluid intake is important for digestion and overall health. There's no indication that fluid intake needs to be decreased when taking pancrelipase.
Correct Answer is D
Explanation
A) Montelukast:
Montelukast is a leukotriene receptor antagonist used for the long-term control and prevention of asthma symptoms, but it is not typically used as a rescue medication to abort an ongoing asthma attack. Its onset of action is slower compared to short-acting beta agonists like albuterol.
B) Fluticasone:
Fluticasone is an inhaled corticosteroid medication used for the long-term control and management of asthma symptoms by reducing airway inflammation and preventing asthma exacerbations. It is not used as a rescue medication to abort an ongoing asthma attack but rather as a controller medication to prevent symptoms when used regularly over time.
C) Cromolyn:
Cromolyn is a mast cell stabilizer medication that is used for the prevention of asthma symptoms and exercise-induced bronchospasm. It is not typically used as a rescue medication to abort an ongoing asthma attack but rather as a controller medication to prevent symptoms when used regularly over time.
D) Albuterol.
Albuterol is a short-acting beta agonist bronchodilator commonly used as a rescue or reliever medication for acute asthma symptoms or to abort an ongoing asthma attack. It works quickly to relax the smooth muscles of the airways, leading to rapid bronchodilation and relief of symptoms such as wheezing, shortness of breath, and chest tightness. Albuterol is considered a first-line medication for relieving acute asthma symptoms and should be used as directed by a healthcare provider during an asthma exacerbation.
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