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unwanted external event occurring in an EKG tracing not associated with the heart function
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the machine that records an electrocardiogram:
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EKG & Cardio
| Question | Answer |
|---|---|
| unwanted external event occurring in an EKG tracing not associated with the heart function | artifact |
| the machine that records an electrocardiogram: | electrocardiograph |
| also known as gain is the degree of change in an EKG tracing, it is represented by the vertical axis | amplitude |
| Recording of electrical current involving both a positive and negative pole | bipolar |
| recording of one location or one pole is: | unipolar |
| A unipolar recording that requires assisting in magnifying the tracing by drawing from other poles is: | augmented |
| Located on the chest in front of the heart | precordial |
| this is the first wave in the cardiac cycle representing atria depolarization | P Wave |
| Asystole: contraction | depolarization |
| the second wave in the cardiac cycle representing ventricular depolarization is: | QRS wave |
| Systole: relaxation is: | Repolarization |
| the third wave in the cardiac cycle representing ventricular repolarization | T wave |
| A collection of fibers that conduct the electrical impulses from the AV node to the ventricular septum is: | bundle of HIS |
| the finger like projections that spread through the ventricular muscle and initiate ventricular contraction are: | Purkinje fibers |
| The length of time from the beginning of atrial depolarization to the beginning of ventricular depolarization is: | P R interval |
| The length of time from the beginning of the ventricular depolarization to ventricular depolarization is: | QT interval |
| The process of recording an electrocardiogram is: | electrocardiography |
| The universally acceptable speed of the tracing and gain (height) used for accurate interpretation of the tracing is: | standardization |
| Muscle movement causing irregular spike in an EKG tracing is: | somatic tremor |
| 60 cycle interference; an artifact in the EKG tracing caused by electrical interference is: | alternating current AC interference |
| Inconsistency in the baseline location on the EKG tracing likely caused by poor lead contact or skin placement is: | wandering baseline |
| A break in the tracing usually caused by a disconnected or broken lead is: | interrupted baseline |
| Also known as dysrhythmia: a change from a normal EKG rhythm: | arrhythmia |
| The natural pacemaker of the heart located in the upper right atrium is: | sinoatrial node, SA Node |
| An upward curvature of waves in an EKG tracing is: | positive deflection |
| A downward curvature of waves in an EKG tracing is: | negative deflection |
| The secondary pacemaker located at the junction of the atria and ventricles is the: | Atrioventricular node, AV node |
| Often referred to as Holter monitoring: an EKG conducted over a period of time while the patient resumes normal activities is called: | ambulatory monitoring |
| The wall muscle is called the | septum |
| The right side of the heart carries: | deoxygenated blood |
| The top chambers are called | atrium, atria |
| The bottom chambers of the heart are called | ventricles |
| What are the 3 layers of the heart called | endocardium, myocardium, epicardium |
| What are the 3 types of circulation | coronary, pulmonary, systemic |
| Where does gas exchange take place | in the capillaries |
| What do veins have that arteries do not have? | valves |
| Arteries have a: | pulse |
| When blood collects under the skin | it forms a hematoma |
| What vein is located in the middle of the forearm | median cubital |
| ________ is located on the outer side of the arm yet harder to palpate | cephalic |
| This vein is located in the inner arm its the third choice and lays close to the median nerve and brachial artery | basilic vein |
| These cells are biconcave and carry hemoglobin | erythrocytes |
| _________ means they can pass through capillaries' thin walls | diapedesis |
| cells surrounding and destroying (eating) the foreign substances thru a process known as: | phagocytosis |
| 3 types of lymphoid cells are: | T lymphocytes, B lymphocytes, and natural killer (NK) cells |
| Cells that have a nucleus that is segmented into 2 or more lobes are: | polymorphonuclear |
| Cells with single lobed nucleus are: | mononuclear |
| ________ Cells have 3-4 lobes, neutral staining, tan, lavender, or pink,60-70%, and engulf bacteria | Neutrophils |
| _________ Cells are bilobed nucleus and cytoplasmic granules that stain orange-red, 1-4%, and destroy parasites | Eosinophils |
| ________ cells a bilobed nucleus and cytoplasmic granules that stain deep blue and may appear black, 0-1%, increase with chronic inflammation and during healing from infection. | Basophils |
| ________ have large kidney shaped nuclei with cytoplasmic granules, 2-6%, Are the largest WBC's, increase during chronic infections such as tuberculosis | Monocytes |
| _______ have round nucleus with a minimum amount of cytoplasm, may be B, T, or NK cells, 20-30%, increase with viral infections | Lymphocytes |
| Another name for platelets | thrombocytes |
| Liquid portion of whole blood | plasma |
| Liquid portion of clotted blood | serum |
Created by:
CWillems
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