hi, debbie, and welcome to allnurses!
is this a class in anatomy, pathophysiology or nursing? i have lots of links on the heart that you can take the time to explore during the vacation. the heart basically has two systems, the pump and the electrical system. you need to know how both work. all diseased conditions of the heart can be explained by how the normal anatomy or physiology has gone wrong. all arrhythmias can be explained by how the electrical pathway has gone heywire.
you will also find links to anatomy and physiology websites on post #47 of this thread on allnurses:
you can find weblinks for information on rhythm strip interpretation on these threads of allnurses:
and, for help with answering nclex type test questions there is information on this thread:
i would just like to also say, and i am aware that you probably won't like hearing this, but you will do much better if you change your mindset to the thinking that it is your
job to learn. the job of a teacher is to facilitate (assist) you in your study. professors can be friends or foes--it's your choice. if you take advantage of their office hours and ask them what other resources you can use to help learn the material, ask for advice on how to study for their tests and look around their office at the titles of the books they have stashed on their shelves there is much to discover that just may benefit you. you are also going to find that as a future practicing rn you will have to find a great deal of information on your own--no one is going to remind you to learn it unless it is a boss who is telling you this after you've screwed up. some nurses never "get" this and go through their careers as mediocre nurses who just barely get through each day of work.