# Lab - Heart Anatomy _ EKG

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```					Name _____________________________________ Period ___________ Date __________
Lab: Heart Anatomy (Review) & EKG (New)
Station 1: The Heart Wall                         Station 3: Heart Valves
1. _________________________                      1. _________________________
2. _________________________                      2. _________________________
3. _________________________                      3. _________________________
4. _________________________                      4. _________________________
5. _________________________                      5. _________________________
6. _________________________                      6. _________________________
7. _________________________                      7. _________________________
Station 2: Chambers & Vessels                     Station 4: Double Circulation
1. _________________________                      1. _________________________
2. _________________________                      2. _________________________
3. _________________________                      3. _________________________
4. _________________________                      4. _________________________
5. _________________________                      5. _________________________
6. _________________________                      6. _________________________
7. _________________________                      7. _________________________

Station 5 or 6: Analyzing the Heart with EKG
Record your data in Table 1, then compare to the standard times listed in Table 2.

Table 1
Interval   Time (s)       Standard Resting
EKG Interval Time
P–R                        0.12 to 0.20 s

QRS                       less than 0.12 s

Q–T                        0.30 to 0.40 s

R–R                           ~0.80 s

Heart Rate                      ~75 bpm
(bpm)

HR (bpm) = (1 beat) (60 s) = 60 (bpm)
(R-R s) (1 min) R-R
Station 7 (or at your desks): Analyzing the Heart with EKG
1. What is the heart doing that generates the P wave?

2. What is the heart doing that generates the QRS complex?

3. What is the heart doing that generates the T wave?
4. Health-care professionals ask the following questions when interpreting an EKG:
 Can all components be identified in each beat?
 Are the intervals between each component and each complex consistent?
 Are there clear abnormalities of any of the wave components?
Using these questions as guides, analyze each of the following EKG tracings and record your
conclusions in Table 3 (indicate presence or absence of the P wave, and whether other
intervals and/or shapes are normal or abnormal). The first analysis (a) is already done for you.
a.                                          b.

c.                                                 d.

Table 3
QRS
P Wave         PR Interval       QRS Interval                  T Wave Shape
Shape
EKG     Beat   Pres.   Abs.   Nml.   Abs./Abn.   Nml.   Abs./Abn.   Nml. Abn.   Nml.   Abs./Abn.

1      X              X                  X                  X           X
a
2      X              X                  X                  X           X
3      X                       X                  X              X               X
1
b
2
3
1
c
2
3
1
d
2
3

Diagnoses:
a. _________________________                                d. _________________________
b. _________________________
c. _________________________

```
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