Gestational diabetes is typically asymptomatic but identified via a 1-hour 50g oral glucose challenge administered at 24-28 weeks of gestation. A venous plasma glucose blood level of > 140 mg/dL is suggestive, and must be confirmed with a 3-hour 100g oral glucose tolerance test. After administration of the 100g glucose challenge, at least two of the following are required for diagnosis: (1) fasting glucose > 95 mg/dL, (2) one-hour glucose >180 mg/dL, (3) two hour glucose >155 mg/dL, and (4) three hour glucose > 140 mg/dL. Choice A - To diagnose gestational diabetes, a positive 1-hour 50g oral glucose challenge must be followed up by a three- hour 100g oral glucose challenge. The diagnosis is only confirmed after both challenges are completed and the thresholds are met. Choice C - Following the diagnosis of gestational diabetes, the first step is strict glycemic control (fasting glucose).

Explanation
Add salmeterol to the current regimen. This patient had mild persistent asthma but was using his albuterol daily, which indicates that a step up in therapy is warranted. The preferred first line treatment regimen for moderate persistent asthma are low to medium dose inhaled corticosteroids plus a long acting beta2 agonist, as well as a short acting beta2 agonist as needed. A is incorrect. Ciclesonide is an inhaled corticosteroid. The patient in the case is already using fluticasone, so adding ciclesonide would be therapeutic duplication. C is incorrect. Long-acting beta2 agonists should only be used as adjunctive therapy in patients who are currently receiving but not adequately controlled on an inhaled corticosteroid. These medications should not be used as monotherapy, due to an increased risk of asthma related deaths. D is incorrect. Cromolyn prevents the release of vasoactive mediators from mast cell and is primarily used for exercise-induced asthma, it is not indicated as an alternative agent in patients with moderate persistent asthma. E is incorrect. Ipratropium is a short-acting anticholinergic, which is often used in COPD or in asthma exacerbations. It is not indicated for maintenance treatment of moderate persistent asthma.

Calcium makes up 40% of the MW of CaCO3. MW Ca / MW CaCO3 40.078 / 100.087 × 100% = 40%. 40% of 1 g CaCO3 = 0.4 g. Patient is taking 0.4 g of Ca 3 times daily. 0.4 g Ca × 3 = 1.2 g of Elemental Ca.

Explanation
Tachyphylaxis is the phenomenon where a patient experiences a rapid form of drug tolerance. Nitrates exhibit this property. It means that the patient becomes tolerance very quickly and so repeat doses become more and more ineffective. To overcome the problem of tachyphyaxis, then, sufficient time must elapse between doses.

Pt's weight in Kg 76.4. 76.4 × [5 mcg/kg/min] = 381.18 mcg/min Concentration of the bag [400 mg/250 mL]
1.6 mg/ml or 1600mcg 381.18 mcg × [1 mL/1600 mcg] = 0.2382 mL/ml 60 in × [0.0.2382 mL/min] = 14.29 mL in one hour