After a patient experiences bleeding with pulsatile sensation post-orthognathic surgery, what is the initial step a surgeon should take?

• A. Immediate surgical intervention
• B. CT angiogram
• C. Observation and monitoring
• D. Application of ice

Answer: (B)

In the context of a patient experiencing bleeding with a pulsatile sensation following orthognathic surgery, an immediate and thorough assessment of the situation is critical. The indication of a pulsatile sensation suggests that there could be a major vascular injury or an active arterial bleed, which requires further evaluation to determine the source of the bleeding accurately.

A CT angiogram is a non-invasive imaging modality that provides detailed information about blood vessels and can help identify the location and extent of the injury. By utilizing this imaging technique, the surgeon can visualize arterial anatomy and any potential hemorrhagic complications, such as vascular anomalies or injury to the major arteries that supply the oral and maxillofacial regions.

In contrast, immediate surgical intervention might be necessary if the situation is critical, but it should ideally be guided by imaging to securely localize the source of bleeding. Observing and monitoring the patient may not be suitable given the associated risks of active bleeding, and application of ice, while potentially useful in managing swelling and discomfort, does not address the underlying cause of the bleeding and requires a more definitive evaluation. Hence, the CT angiogram serves as an essential initial step to formulate an appropriate intervention strategy.