Event-Onset continued:

• Although her prodrome of weakness, diaphoresis, warmth, and nausea are the rule in neurocardiogenic syncope, they can also occur with syncope due to orthostatic hypotension. In the latter, however, the warning symptoms are usually very brief and much milder.
• About 25% of patients with neurocardiogenic syncope feel slight palpitation. This is usually a slow forceful beat — not irregular — not unusually rapid. After a syncopal episode from NCS, patients can on occasion feel a fast heart beat that gradually resolves.