HELP WITH REPORT PLEASE

hi im 15yo and i have heart problems since i was 3.i had sinus arrhitmiae now for more then 6mount i have tachycardia i have a holter monitor report  please tell me how scary is this and shoul i drink propafenone or some other anti-arrhitmic
on report writing

there were total 66247beats
Average HR : 71bpm
max 147bpm
min 46bpm

Sinus Tachycardia:13 highest 147 beats 802 longest 108 sec
Sinus Bradycardia 0
Pause 0
SVT:95 highest 87bpm
SVE:42 grather then 35 percent
PVC:129 0.3 percent of the Total Isolated QRS were abnormal
R on T :0
Couplet :21
VTach:12 highest 244bpm
Bigemini:0
Atrial Fibrilation :0
ST : 91 highest 122 beats 159
Patient events 0


my questions:
what is SVT ,ST,PVC,...
shoul i take other medications i alredy drinking propranolol 40 mg 3*1/4
my symptoms are
i have every singe day hr over 120
i feeld 3 month earlier like something walking on my heart like Atrial Fibrilation
i have shortness of breath
my sat O2 are never on 100%alwest lower
please help i heard thet SVT are taking surgery!!!

[CCF HeartMD6]

SVT stands for "supraventricular tachycardia"
ST stands for "sinus tachycardia"
PVC stands for "premature ventricular contraction"
SVE stands for "supraventricular ectopics"

The term "SVT" is used to reprsent any rhythm that originates above the ventricle (i.e. from the sinus node, atria, or AV node).  Depending on what the primary rhythm disturbance will dictate the treatment strategy (in conjunction with previous medications and symptoms present). This holter report would best be interpreted by an electrophysiologist (or the cardiologist) who ordered the study who can make the best decision based on your past medical history and clinical examination.

[Niki98]

i forgot to write ST  : 91 122bpm beats 159 longest 2974sec. beats 3149

[Niki98]

ty but thet is not exectly what im looking for,our doctors dont talk mutch , i was yesterday to cardoiologist and he raised my dose to Propranolol 40mg 3*1/2 but im not sure thet this medication will realy help me i think maybe anti-arhhitmic like propafenone please reply