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48 Cards in this Set
- Front
- Back
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electrocardiograms are.... |
recordings of electrical impulses of the heart |
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determinations by ECGs include |
- heart rate and rhythm - evidence of new or past heart attack - thickened chambers of the heart |
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the adult heart is about the size of... |
a fist |
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diastole and systole refer to the ___ |
rhythm of the heart |
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cardiac cycles depend upon |
electrical impulses |
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ability of the heart to generate and transmit its own electrical impulse is called ___ |
automaticity |
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during an ECG, electrical impulses are recorded on |
graph paper |
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types of waves observed during an ECG: |
- P wave - QRS complex - T wave |
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routine ECGs are usually recorded in the morning because... |
the patient is well rested |
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often stat ECGs are obtained in... |
emergency situations |
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functions of the ECG machine include... |
- input - signal processing - output display |
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solid state circuitry within the electrocardiograph ___ |
amplifies and converts the impulses |
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what type of machine requires a standardization test before each use? |
analog |
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attachment to the patient's body for an ECG reading are called.... |
electrodes |
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reusable electrodes require special conduction... |
gel |
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part of ECG consult information |
- name, ID number - physician name - cardiac medications |
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things that deter electrical conduction during an ECG: |
- hairy skin - sweaty skin - tremors |
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if a patient has very large breasts, prior to an ECG the PCT should.... |
lift the breast and place the electrode |
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things that can cause tremors in patients: |
- medications - Parkinson's disease - elevated temperature |
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if a patient requiring an ECG has a bandage or injury preventing proper lead placement... |
- make a note on the consult - make a note on the tracing - place the leads as accurately as possible |
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two general locations of leads for ECG are... |
- head and neck - back and stomach - hands and feet |
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usual locations for a lead... |
- intercostal spaces |
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when determining the location for the 6 chest leads... |
clavicle does not count as the first rib |
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ECG lead cables should... |
lie flat against the body |
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standard ECG machine... |
Burdick 550 |
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True or False: Patient preparation and lead placement remains the same regardless of the type of electro-cardiograph. |
True |
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analog electrocardiograph uses a(n) |
hot stylus |
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immediately after removing the ECG tracing, the PCT should... |
indicate the patient's name, date, and time |
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ECG reading sent by modem requires a... |
phone line |
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improper skin preparation for the ECG increases.... |
skin impedance |
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if the baseline begins to wander, the following may explain why... |
mixing reusable electrodes with disposable |
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AC noise or 60-cycle interference during an ECG is caused by... |
electrical activity |
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motion artifact is also knows as.... |
somatic tremor |
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solutions for low amplitude |
- loose connections - improper application of leads - proper gain setting |
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indications to notify an RN |
- heart rate less than 60 - heart rate greater than 110 - chest pain |
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children are less anxious during an ECG when given ____ |
specific information |
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when performing an ECG on a child, you might call the electrodes... |
stickers |
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when doing pediatric ECGs you must do how many ECGs with children 10 and younger? |
2 |
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if a patient's chest is very small, you can... |
trim the electrodes |
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reasons for venipuncture |
- confirm a diagnosis - monitor a patient's condition - guide treatment decisions |
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what is the usual sized needle to use for adult venipuncture? |
19-21 gauge |
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reasons for lab rejection of a blood specimen |
- wrong tube - incorrect mixing - contamination |
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patients can't stand up during a blood draw because... |
they may become faint and fall |
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prior to a blood draw, place the needed equipment within your ________ |
peripheral vision |
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sites for drawing blood include... |
- arm - hand - chest |
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techniques to find access to veins... |
- massage the arm downward - lower the extremity to the level of the heart - apply a warm washcloth |
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usual types of sample preservation... |
- cold - warm - room temperature |
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how many venipuncture attempts are allowed? |
2 |
