Like Ace7 said, everyone's experience is different.
I also work 7p-7a. My floor is Medical Telemetry and I started there right after graduation with no extra classes outside of basic nursing school.
To describe Med Tele, what I like to tell people is that we get people with heart problems (MIs, CABG candidates, ablation candidates, pacer candidates, etc) BEFORE we fix the problem.
On a normal night we can have anywhere between 5 or 6 pts. It's a light night if we have 4 pts and a heavy (though not uncommon) night if we have 7 pts. If we're lucky, we start out with a full team or only one empty room. If we get an admit, hopefully it is around 2300 or after, when we're winding up on med pass and assessment for the others. If we get two or three admits and a discharge or two (I've had this happen), we pray to God that there is a float nurse to help or that the charge can give a hand. Usually it's not nearly that bad, though, and after report from 1845-1915ish and the rush from 1915ish to 2300 or mn, we usually have time to eat, wrap up loose ends, do research for the crazy busy dayshift that has no time to do so, and maybe admit a pt or two as well. Then, around 0400 or 0500 I rap out my telemetry trends (10-20 min tops) for all my pts and then begin med pass. Report and home! Then sleep and back to do it all again. Usually the night goes by pretty fast -- esp. if you like to spend time talking to your pts like I do.
I think the youngest pt I've had was about 15 or 16, the oldest has been close to 100. Heparin is an everyday gtt, Amio, Integrilin, Dopamine, Bumex are fairly common too. There aren't many gtts we don't
do -- a nitro gtt being the only one that comes to mind right now. CHFers, pts with CP, and pts with arrythmias are our bread and butter. I've only had a couple of CABGs personally in the year and a half I've been working here, but that's just luck of the draw. Heart caths and stress tests are super common as are pacers and even ablations to some extent.
We don't see much in the way of trachs or chest tubes (thank Heavens, mucusy kind of stuff is my personal Kryptonite). It's an intense floor but I've definitely learned a lot and am learning more every day. Since we don't have a medsurg floor, we see a lot of different kinds of pts, including respiratory, renal, and (occasionally) cancer pts.
I was miserable on and off for my first year as I got my sea legs, but now I absolutely love my job. There are good nights and bad nights, but I've finally hit my comfort zone. I'm glad I didn't start on a slower flow. The heart is very fascinating and I love my pt population. If you go cardiac, expect to work your rear off, but also expect to learn a LOT.
Hope this helps somewhat.