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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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posted:9/6/2012
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