Examine the attached ECG image and identify the type of arrhythmia present.
The ECG shows a series of wide QRS complexes occurring at a rapid rate.

Choice A rationale

Pregnancy increases venous pressure, leading to stasis and a higher risk of DVT due to hormonal changes and decreased venous return.

Choice B rationale

Oral contraceptive use elevates estrogen levels, increasing blood coagulability and the risk of clot formation, predisposing individuals to DVT.

Choice C rationale

Trauma can damage blood vessel walls, initiating clotting cascades and increasing the likelihood of deep vein thrombosis formation.

Choice D rationale

Immobility causes venous stasis, as muscle contractions that promote blood return are reduced, heightening the risk of DVT due to stagnant blood flow.

Choice A rationale

Intermittent claudication, characterized by muscle pain during exercise relieved by rest, indicates early-stage peripheral arterial disease due to decreased blood flow. It is an early symptom resulting from insufficient oxygen supply to muscles.

Choice B rationale

Rest pain occurs in more advanced peripheral arterial disease and indicates critical limb ischemia. It is a late-stage symptom, usually present even at rest due to severely compromised blood flow.

Choice C rationale

Foot ulcers are signs of advanced peripheral arterial disease, often developing due to poor circulation and delayed wound healing. These ulcers indicate severe disease progression and significant arterial insufficiency.

Choice D rationale

Dependent rubor, a red discoloration of the skin when the leg is lowered, occurs in advanced peripheral arterial disease. It results from chronic ischemia and dilatation of the small blood vessels in response to prolonged tissue hypoxia.