請問心臟病 與 普通人的昏迷過程，以及結果有甚麼不同？

The three most common causes of 昏迷 (syncope) are
1) vasovagal - eg sudden syncope during severe pain / emotional stress/ see other people bleeding etc
2) cardiac (heart) cause - eg abnormal heart beating (arrhythmia)
3) neurological cause (brain problem) - eg seizure

All of them can occur in those young people (I expect you are young). However, as you have underlying congenital heart diseaes (先天性心臟病,), your chance to have heart cause as the cause of syncope should be higher them those without underlying heart problem.

For vasovagal syncope, they usually occur at specific environment (standing at playground for long time / going to play very exciting games )or presence of triggering factors (eg pain / feel emotonally upset ). They may have some preceding nausea and dizziness or abdominal pain

For heart problem, usually no preceding events and the syncope occur suddenly. Occasionally, may had chest discomfort or feeling heart beating very fast and irregular

For neurological cause, may or may not have preceding events (feeling something will occur, seeing flash light etc). May had prolong dizziness and drowiness after the events (post ictal drowiness). Others may tell you that you have abnormal limbs movement during the syncope

You will need a Dr to help making the diagnosis
You can have a look of this article from emedicine as well
hope can help

昏厥是因為腦部血液供應突然減少而引起的短暫性人事不省。例如：站立過長時間，令到血液集中到下半身，也可能導致昏厥的。
成因
成因主要是過度疲勞、情緒激動或者疼痛等。還有站立過長時間，令到血液集中到下半身，腦部血液流量減少，也可能導致昏厥的。
徵狀
徵狀有面色青白、脈脈緩慢、神志不清等

你問第二個啦！我唔知wo~~