Weird ECG pattern?

Heart health and blood vessels
1

I got issues with tachycardia and hard/heavy beating HR (even when not fast) for about 10 years. went to cardiologist, did some test and prescribe me beta blocker.

I have omron hcg801 ecg handheld and recently i noticed weird different pattern on my ecg result. usually the p wave is higher followed by lower t wave but its the other way around.

I record it when i was lying on bed, got sick. i wonder if the weird/different pattern due to a problem with my heart or if its a glitch/error. (but im not sure cause i tried to check again and the other results came out like the usuall except for those some result when i feel issues.)

I ask a cardiologist if its a problem and he said no. but ive never noticed that pattern before untill last year. which is odd. so im confused and feel i need some inputs.

I hope theres someone who understands about ecg who can give me some inputs.

I would greatly appreciate it.

Thank you for reading.

2

Sorry i couldnt edit it

Here is the picture of one of the results:

http://i.imgur.com/5OzqDsJ.jpg

3

SVT yes! I see enlarged atrium or anAtrial septal defect? 

4

Thats supraventricular tachycardia (SVT). Its not dangerous. Do you have anxiety? If you do then that could be whats causing it, but if the cardiologist said its not an issue then dont really worry about it.