**Question:** Which of the following statement is false

A. Lidocaine is a local anesthetic that blocks voltage-gated sodium channels, preventing action potential propagation in neurons and smooth muscles.
B. Dexamethasone is a systemic corticosteroid with anti-inflammatory, immunosuppressive, and anti-allergic effects.
C. Diltiazem is a calcium channel blocker that inhibits calcium influx into myocardial cells, reducing myocardial contractility and heart rate.
D. Oral contraceptives increase the risk of venous thromboembolism (VTE) and cerebrovascular accidents (CVA).

**Correct Answer: D. Oral contraceptives increase the risk of venous thromboembolism (VTE) and cerebrovascular accidents (CVA).**

**Core Concept:**
Oral contraceptives, also known as oral contraceptives or OCPs, are hormonal medications used for contraception and to regulate menstrual cycles. They contain synthetic estrogens and progestogens that mimic the effects of endogenous hormones. The three types of oral contraceptives are: combined oral contraceptives (COCs), progestogen-only pills (POPs), and mini-pills containing progestogens only.

**Why the Correct Answer is Right:**
The misconception regarding oral contraceptives increasing the risk of venous thromboembolism (VTE) and cerebrovascular accidents (CVA) is false. Although oral contraceptives do increase the risk of these events, the overall risk remains low and outweighed by the benefits they provide. The increased risk is mainly due to the progestogen component of the pills, particularly in higher doses. However, the benefits of using oral contraceptives for contraception, menstrual cycle regulation, and treating heavy menstrual bleeding far outweigh the small risk of VTE and CVA.

**Why Option D is False:**
Option D is false because it exaggerates the risks associated with oral contraceptives. The actual risks are:

1. VTE (venous thromboembolism): The risk of VTE with oral contraceptives is approximately 3-5 times higher than in non-users, but still low (1-2 cases per 1,000 women-years). The risk increases with age, obesity, smoking, and other risk factors.

2. CVA (cerebral or cerebrovascular accident): The risk of CVA with oral contraceptives is approximately 1.5-2 times higher than in non-users, but still low (1-2 cases per 10,000 women-years). The risk increases with age, smoking, and other risk factors.

**Why Option D is Right:**
Option D is right because it highlights the importance of considering potential risks when prescribing oral contraceptives, particularly for patients with risk factors like age, obesity, and smoking. The risk needs to be weighed against the benefits of oral contraceptives for contraception and menstrual cycle regulation. Additionally, the statement refers to the overall risk, which