ECG tracing?

[aeris99]

Hoping for some guidance. I'm doing a lab review sheet for A&P2 on the cardiovascular physiology. One question is matching terms to a ECG tracing (that's what the book calls it)

I've looked through my textbook, lab book and online. I can't find anywhere that shows the process relating to the graph. I'm really confused.

I don't want answers just somewhere to find the info so I understand this.

I'm going to add a photo of the graph from the text to clarify.

Thanks in advance.

[cracklingkraken, ASN, RN]

Do you know if it's asking for atrial/ventricular contraction and relaxation? That's the only thing I could think of.

[pmabraham, BSN, RN]

Good day:

What comes to mind would be knowing the terms, sequence, etc. for the following:

P wave

QRS complex

T wave

P–Q interval

S–T segment

Q–T interval

I would also recommend looking up the correlation of ECG waves with atrial and ventricular systole. Look up what makes up the cardiac cycle start to finish.

Thank you.

[cracklingkraken, ASN, RN]

^^ Right. This makes much more sense.

[aeris99]

That's what I'm trying to figure out. My text doesn't clearly link the sequence with the graph sections. I'll try another google search for definitions of the terms. Maybe that will clear it up. I'm totally confused!

[cracklingkraken, ASN, RN]

You can just google PQRST wave and should be able to find some explanations.

[psu_213, BSN, RN]

In the instructions for the assignment, is their an indication for what terms you are supposed to put on the EKG tracing? Are their blanks on the tracing that would indicate something should be labeled there?

[akulahawkRN, ADN, RN, EMT-P]

That "mmHg" chart shows what's going on. When you see a bump "up" in pressure, that represents systole, or contraction. The magenta line is atrial pressure. The blue line is ventricular pressure. The EKG shows the electrical side of the contraction stimulus. Notice that the P wave happens just before the atrial pressure bump and the QRS complex happens just before the ventricular big bump. There's a slight delay in stimulation and the response because that's how long it takes the muscle to actually move after it's been stimulated.

The stated "sequence" of events in post #2 is a great place to start and learn the terms. Then all you have to do is match up the terms with what's happening. It's a lot easier than it seems, once you wrap your head around it.

[aeris99]

Thank you! I'm going to watch the videos from the text on the cardiac cycle and see if I can nail down the sequence. I really appreciate the help. I've been stuck on this all week!

[aeris99]

Found this video to be very helpful in case anyone else gets hung up on this.

Thank you all again for the help! I finished my lab sheet and finally understand the concept!

[MereSanity]

Go to Skillstat.com....tools...6second EKG......awesome tool!

[aeris99]

Thank you all for the help! I got an A on the test and it's definitely because of your input!