EKG Chapter 5 - The 12-Lead ECG
Question and answers correctly
solved 2026/2027
pericarditis - correct answer inflammation of the pericardial sac covering the heart
ventricular hypertrophy - correct answer enlargement of the ventricle
sensor - correct answer a disc or tab made of plastic that has a metal component as well as a layer or
well of gel or conducting substance, and which is placed on a patient's skin in order to pick up electrical
activity from the heart where it is transmitted through cable to the ECG machine to be processed. also
called an electrode
lead - correct answer a configuration of positive and negative sensors, or electrodes, on the body
surface that picks up the electrical information from the heart. the different sensor configurations offer
different "views" of the heart
cable - correct answer one or more insulated wires that connect sensors to an electrocardiograph
galvanometer - correct answer a device the ECG machine which detects electrical currents from a
patient and converts it into mechanical energy, which is then recorded onto graph paper
stylus - correct answer the needle of the ECG machine that forms a tracing on the graph paper
graph paper - correct answer paper on which the ECG is recorded that is reprinted with horizontal lines
representing time and vertical lines representing voltage
, calibration - correct answer the process of setting a machine to a standardized scale so the results will
be comparable and tests can be compared
artifact - correct answer additional electrical activity on an ECG tracing as a result of muscle movement,
alternating current (AC), or disruption of the cable, rather than the electrical activity of the heart
isoelectric line - correct answer the baseline; a straight line on the ECG recording that represents an
absence of electrical activity
ground leads - correct answer a lead that is not used to determine electrical activity, but rather as a
reference point
incorrectly - correct answer if the procedure is done ________, the quality of the ECG tracing will be
compromised and an accurate diagnosis may not be made
electrolyte imbalances/rhythm analysis - correct answer an ECG also is helpful in detecting _______
________ and in performing ________ _________
informed - correct answer it is the responsibility of all healthcare team members to keep the patient
__________ about the environment and procedure he or she will be experiencing
step 1 of preparing a patient for an ECG - correct answer verify that the physician has ordered an ECG
for him or her
step 2 of preparing a patient for an ECG - correct answer verify that you have the correct patient by
checking his or her name band or directly asking the patient to state his or her name
William Einthoven - correct answer the electrocardiograph was invented by ______ _______
Question and answers correctly
solved 2026/2027
pericarditis - correct answer inflammation of the pericardial sac covering the heart
ventricular hypertrophy - correct answer enlargement of the ventricle
sensor - correct answer a disc or tab made of plastic that has a metal component as well as a layer or
well of gel or conducting substance, and which is placed on a patient's skin in order to pick up electrical
activity from the heart where it is transmitted through cable to the ECG machine to be processed. also
called an electrode
lead - correct answer a configuration of positive and negative sensors, or electrodes, on the body
surface that picks up the electrical information from the heart. the different sensor configurations offer
different "views" of the heart
cable - correct answer one or more insulated wires that connect sensors to an electrocardiograph
galvanometer - correct answer a device the ECG machine which detects electrical currents from a
patient and converts it into mechanical energy, which is then recorded onto graph paper
stylus - correct answer the needle of the ECG machine that forms a tracing on the graph paper
graph paper - correct answer paper on which the ECG is recorded that is reprinted with horizontal lines
representing time and vertical lines representing voltage
, calibration - correct answer the process of setting a machine to a standardized scale so the results will
be comparable and tests can be compared
artifact - correct answer additional electrical activity on an ECG tracing as a result of muscle movement,
alternating current (AC), or disruption of the cable, rather than the electrical activity of the heart
isoelectric line - correct answer the baseline; a straight line on the ECG recording that represents an
absence of electrical activity
ground leads - correct answer a lead that is not used to determine electrical activity, but rather as a
reference point
incorrectly - correct answer if the procedure is done ________, the quality of the ECG tracing will be
compromised and an accurate diagnosis may not be made
electrolyte imbalances/rhythm analysis - correct answer an ECG also is helpful in detecting _______
________ and in performing ________ _________
informed - correct answer it is the responsibility of all healthcare team members to keep the patient
__________ about the environment and procedure he or she will be experiencing
step 1 of preparing a patient for an ECG - correct answer verify that the physician has ordered an ECG
for him or her
step 2 of preparing a patient for an ECG - correct answer verify that you have the correct patient by
checking his or her name band or directly asking the patient to state his or her name
William Einthoven - correct answer the electrocardiograph was invented by ______ _______
