27 Questions
Which vitamin D metabolite has the most rapid onset of maximal action?
Calcitriol
What happens in the absence of vitamin D in relation to dietary calcium absorption?
Calcium absorption stops completely
Which form of vitamin D has a long half-life and requires several weeks to saturate body stores?
Ergocalciferol
What is a potential consequence of overdosing on ergocalciferol?
Hypercalcemia with prolonged periods
Among ergocalciferol, dihydrotachysterol, and calcitriol, which has the highest effectiveness compared to parent vitamin D?
Calcitriol
Which element, when dissolved in water, acquires a positive charge?
Potassium (K+)
What is the main electrolyte found in interstitial fluid?
Sodium (Na+)
Which electrolyte is a cation with a positive charge?
Magnesium (Mg2+)
What is the normal range for Calcium in the body?
9.0 to 10.5 mg/dL
Which of the following is a side effect of calcitonin?
Facial flushing
Where is 2/3 of Total Body Water (TBW) located?
Intracellular fluid
How do bisphosphonates act in the treatment of hypercalcemia of malignancy?
By inhibiting osteoclastic bone resorption
What is a rare adverse effect associated with repeated doses of bisphosphonates?
Renal deterioration
What is the main function of calcitonin in relation to calcium levels?
Decrease blood calcium levels
How do bisphosphonates affect bone resorption?
By inhibiting osteoclastic bone resorption
Which ions are provided by the dissociation of calcium chloride in water?
Ca2+ and Cl-
What percentage of body calcium is excreted in the feces as insoluble salts?
80%
What is a common side effect of calcium chloride following rapid IV injection?
Bradycardia
In what condition is calcium chloride not recommended as routine treatment?
Cardiac arrest
What is the main function of Vitamin D in the body?
Facilitate intestinal absorption of calcium
Which ions does Vitamin D stimulate the absorption of, in addition to calcium?
Phosphate and magnesium ions
What is the normal range of magnesium in the body?
1.3 to 2.1 mEq/L
Which calcium disorder is characterized by high levels of calcium in the blood?
Hypercalcemia
What is the main side effect associated with rapid intravenous injections of calcium gluconate?
Hypercalcemia
Where does most of the body's calcium exist?
Skeleton
How is calcium gluconate primarily eliminated from the body?
Fecal excretion
What is the mechanism of action of calcium chloride?
An ionic compound of calcium and chlorine
Learn about the medical indications and uses of calcium chloride, including treatment of hypocalcemia, antidote to magnesium intoxication, and combating toxic effects of hyperkalemia. Explore how calcium salts help reduce cardiac arrhythmias caused by potassium.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
