Power lab recording of ECG,heart sounds and pulse

1. Presented by
Dr. Saima
Dr. Maira Saleem
Dr. Sana Shahzad

2. What is power lab?
The PowerLab system is a peripheral
device designed to perform various
functions needed for data acquisition,
signal conditioning and pre-processing.

3. Analogues
Animal output
stimulator
Nerve Stimulator Bio Amplifier

5. Power Cable USB Cable

6. Education kits and transducers Power Lab Software

8. Advantages
• Compact hardware
• Easy setup
• Minimal supervision
• Complete human and animal physiology experiments
• Cost effective
• Portable
• Easy to connect & use software
• All lab information in a single software program
• Independant learning

9. Equipments required

10. Finger pulse transducer Cardio microphone sensor

11. Setup
• Make sure the PowerLab is connected and turned on.
• Connect the cardio microphone to Input 1 on the
PowerLab. You will use it later in the lab.
• Connect the finger pulse transducer cable to Input 2 on
the PowerLab. You will use this later in the lab.
• Plug the Bio Amp cable into the Bio Amp connector on the
PowerLab.
• Connect the electrode cables to EARTH, CH1 NEG, and
CH1 POS on the Bio Amp cable.

13. Attachment of ECG Electrodes
• Remove any watches and/or jewelry from the volunteer's
wrists and ankles.
• Using a pen, mark each point on the volunteer's skin
where electrodes will be placed (i.e. both wrists and the
right leg). Lightly abrade the skin with abrasive gel, then
clean the area with alcohol swabs.
• Snap the lead wires onto disposable electrodes.
• Attach the electrodes to the prepared areas on the
volunteer's skin. The positive electrode should go to the
left wrist, the negative electrode to the right wrist, and the
ground electrode to the right leg.

14. ECG Electrodes

16. Procedure To Record ECG
• Ask the the volunteer to relax and not move. This will minimize
signal artifacts due to movement.
• Select Start to record.
• Enter the volunteer's name into the Comment panel, and select
Add.
• Use the Auto Scale or compression buttons to ensure that you
can see the data as it is being recorded.
• If the ECG cannot be seen, check that all the electrodes are
correctly attached. If the signal is noisy and indistinct, make sure
that the volunteer is relaxed. Consider using the alternative
attachment positions.
• Select Stop.

17. Procedure To Record Heart sounds
• Using a stethoscope on the left side of the volunteer's chest, listen to find the best
position. When this position has been found, ask the volunteer to place the cardio
microphone over this area.
• There are two ways to ensure the cardio microphone is held firmly in place:
• A strap around the chest can be used.
• A heavy book (or similar) can be placed on top of the chest. This requires the
volunteer to lie down.
• Note: The volunteer should not hold it in place on the chest wall by hand as
movement of the hand will introduce considerable noise into the recording.
• Select Start to record PCG. If you cannot see distinct heart sounds, ask the
volunteer to move the cardio microphone until the best possible PCG is recorded.
• When you achieve a good signal, record for about 15 s then select Stop.

18. Procedure To Record Pulse
• Check the finger pulse transducer is connected to Input 2
on the front of the PowerLab.
• Place the pressure pad of the finger pulse transducer on
the middle finger of either hand. Use the Velcro strap to
attach it firmly.
• Select Start to record.
• After you have obtained a clear finger pulse signal record
for 60 s.
• Select Stop.