All of the following are known side effects with the use of tocolytic therapy except :
**Core Concept**
Tocolytic therapy is used to suppress premature labor by inhibiting uterine contractions. However, this class of medications can have significant side effects due to their effects on various physiological pathways.
**Why the Correct Answer is Right**
The primary mechanism of action of tocolytics involves inhibiting the contractility of the uterine muscle. This is achieved through various pathways, including the inhibition of prostaglandin synthesis, adrenergic receptor activation, or calcium channel blockade. The most common side effects of tocolytic therapy include:
* **Option B:** Pulmonary edema, which can be caused by the release of histamine and subsequent vasodilation, leading to increased capillary permeability and fluid accumulation in the lungs.
* **Option D:** Hypertension, which can be caused by the activation of adrenergic receptors, leading to increased vascular resistance and blood pressure.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, but typically, tocolytic therapy can cause hypotension due to vasodilation, which is a known side effect.
* **Option C:** This option is not provided, but typically, tocolytic therapy can cause hyperglycemia due to the release of stress hormones, such as cortisol and adrenaline, which can increase glucose levels.
**Clinical Pearl / High-Yield Fact**
It is essential to monitor patients receiving tocolytic therapy closely for signs of pulmonary edema, hypertension, and other side effects, as these can be life-threatening.
**Correct Answer:** A.