Cold slushy drink and Heart Arrhythmia

All my life I have occasionally gotten my own version of an ice cream headache – only mine occurs in my chest (I have never had the headache version).  Two days ago, around 5pm while drinking a frozen slushy drink, I had two of the chest version which were very uncomfortable and after the second I noticed that there was a “fluttering” feeling in my chest.  

At first I thought this was my digestive tract reacting to the slushy but the symptoms didn’t go away and by bedtime I was getting a little concerned.  I own a stethoscope and I used this to listen to my heart and it didn’t sound at all normal.  I was hearing several fast beats followed by a couple slower ones and this pattern repeated over and over.  I then listened to my wife’s and my brother’s heartbeat and it was clear that mine was very different.  Then they listened to my heartbeat and afterward insisted I get looked at RIGHT NOW!  

The ER listened to my heartbeat and then did an EKG which indicated a problem.  At this point they said I would be spending the night under close observation – they then proceeded to connect me to a saline IV, a heart monitor an oxygen.  As they were preparing my room my heartbeat returned to normal (they said I “converted” which initially confused me).  By their reaction this was not expected and when they consulted with the staff cardiologist they decided to let me go home.

I am new to this forum and would appreciate any insights into this condition.

[SassyLassie]

I do know that cold causes blood vessels to constrict, and this may have been what happened in your case. Cold makes my PAC's act up, and can cause some muscle pain tool Keep close tabs on it and if it acts up again see your doc and have a cardiac work up.

[marshaldillon]

I only get PVC's after I eat or have an upset stomach. When I told my cardiologist about this, he told me about a guy that told him he got PVC's every time he drank a cold glass of water. The Doc left the room and went and got a glass of cold water, returned and said "drink this". The guy gulped it down and sure enough, had several PVC's as the Dr. listened. So it happens. If they are indeed PVC's, they are usually harmless. I would have the ER forward your EKG to your primary care physician, who will in turn refer you to a cardio if needed. The fact they let you go home makes me think it isn't serious.

[Finnmark]

I am new to this and do not understand the following terms:
1.  PAC
2.  PVC

Can you please explain these terms?

Thank you

[Finnmark]

Also, I just noted that I neglected to mention that the result of my EKG showed an Atrial Arrhythmia

[Bon-Bon]

PAC - Premature Atrial Contractions (top two chambers)
PVC - Premature Ventricular Contractions (bottom two chambers)

I've experienced increased arrhythmia (PVC's in my case) when I eat icecream or drink somthing cold.

Bon-Bon