What is one of the complications associated with neuro angiography that requires immediate supportive measures?

Thromboembolism is a significant complication that can arise from neuroangiography, and it necessitates immediate supportive measures due to the potentially life-threatening consequences associated with it. During the procedure, there is a risk of dislodging a thrombus or embolus that can subsequently occlude cerebral arteries. This can lead to ischemic strokes or other serious vascular events.

When thromboembolism occurs, it may result in immediate neurological deficits, such as loss of motor function, speech disturbances, or changes in consciousness, depending on the area of the brain affected. Rapid recognition and response to thrombosis are crucial because the timely administration of therapies, such as thrombolytics, can significantly alter patient outcomes and reduce long-term disabilities.

The other options, while they can occur during neuroangiography, do not typically require the same level of immediate intervention as thromboembolism does. For example, hypertension can often be managed with medications post-procedurally, allergic reactions may require treatment such as antihistamines or corticosteroids but are usually identifiable and manageable without immediate invasive measures, and excessive bleeding might be controlled with pressure or transfusion but does not always demand the urgent response that thromboembolism entails.