Transcript B212Lab4 - gserianne.com

Bio212
Laboratory 4
Blood Pressure
Heart Sounds
Exercise Physiology
1
Objectives for Today’s Lab
• Become familiar with determining pulse rate
• Become familiar with taking a blood pressure
reading and with using a sphygmomanometer
• Identify the heart sounds (lubb-dupp)
• Correlate the effects of sitting, standing, and
exercising on pulse and blood pressure
2
Location of
Pressure Points
Temporal artery
Facial artery
External Carotid
artery
Brachial artery
Radial artery
Femoral artery
Pulse =
# beats/30 sec X 2
Dorsalis pedis
artery
Popliteal artery
Posterior tibial artery
3
Pulse in Lab Today
• Use the radial artery of your partner, and use
your index finger
• Note the characteristics of the pulse
– Regular, irregular
– Strong, weak
• Count number of pulses in 30 sec. and multiply
by 2 to get the pulse rate
• Do this sitting down, standing up, and after
exercise
4
Heart Sounds
Lubb (S1)
• first heart sound
• occurs during
ventricular
contraction
• A-V valves closing
Dupp (S2)
• second heart sound
• occurs during
ventricular relaxation
• semilunar valves
closing
♥
5
Heart Sounds
Listening to the heart
(auscultation) is done using a
stethoscope
Because sounds must pass
through several layers of
tissue, sounds are not heard
directly above their point of
origin
S1 = “Lubb” (1 looks like l)
S2 = “Dupp” (2 curved like D)
6
Heart Sounds
Auscultate over the
left sternal border
about the level of the
3rd or 4th rib
Find the point where
you can hear the
sounds the best, and
use that
Remember: lubb-dupp <pause> lubb-dupp <pause> …
7
Auscultory Method of Determining Blood Pressure
Use an average bp from two
different readings from both
arms.
Do this standing up, sitting
down, and after exercise
Korotkoff sounds…
8
Class Summary Table for Pulse and BP
Sitting
Initials
Pulse
(bpm)
Systolic
(mm Hg)
After Exercise
Standing
Diastolic
(mm Hg)
MAP1,1,2
(mm Hg)
Pulse
(bpm)
Systolic
(mm Hg)
Diastolic
(mm Hg)
MAP1,2
(mm Hg)
Pulse
(bpm)
Systolic
(mm Hg)
Diastolic
(mm Hg)
MAP1,2
(mm Hg)
Average
>
Pulse Pressure = Systolic BP – Diastolic BP
2 Mean Arterial Pressure (MAP) calculated as: Diastolic pressure + (Pulse pressure ÷ 3)
1
At home, calculate averages for all resting and post-exercise values and then DISCUSS
WHAT THE VALUES MEAN and WHY they are what they are. Be sure to check your
classmates’ calculations of MAP; they may be incorrect.
9
What you should do in lab today…
• Complete Part A of your Laboratory Report 41 (from
Hole’s Lab Manual - handed out) before continuing
– Review Chapter 17 of your textbook if necessary
• Complete Parts B and C of the Laboratory Report 41
–
–
–
–
Listen to heart sounds (after inhaling deeply; after exercise)
Pulses (sitting, standing, after exercise)
Together
Blood pressure (sitting, standing, after exercise)
DO NOT DO THE EXERCISE PART IF YOU HAVE
ANY MEDICAL PROBLEMS!!
• Complete the Critical Thinking Application of your
Laboratory Report and hand in (one report from
each person)
10