electrocardiography
Cardiac electrical recording
Electrocardiography is the medical technique of recording the heart's electrical activity.
The procedure produces an electrocardiogram (ECG or EKG)—a graph showing the rhythm and strength of heartbeats.
It's a standard diagnostic tool for detecting arrhythmias, heart attacks, and other cardiac conditions: The doctor ordered electrocardiography after she complained of chest pains.
Abnormal cardiac rhythm
- ischemiaInsufficient tissue blood supply
- infarctionTissue necrosis from ischemia
- hypertrophyTissue enlargement via cells
- bradycardiaAbnormally slow heart rate
Electrical contact points
- leadsGoes in front
- tracingCopying by following lines
- calibrationAdjusting for measurement accuracy
- artifactHuman-made historical object
gain · filter · precordial · Holter · signal · recording · placement · gel
Longitudinal seismic wave
- isoelectricHaving equal charge
- baselineStandard for comparison
- depolarizationLoss of electrical gradient
- repolarizationMembrane voltage reset
amplitude · duration · deflection · axis · vector · morphology · complex · interval
Physician treating cardiovascular conditions
- electrophysiologyBiology's electrical activity science
- pacemakerDevice regulating heartbeat
- defibrillatorHeart-shocking medical device
- ablationRemoval by cutting, melting
cardioversion · catheterization · cardiac · sinoatrial · atrioventricular · myocardium · coronary
Distant automated data collection
- ambulatoryAble to walk
- continuousWithout pause or gap
- bedsideNear the mattress
- remoteDistant or controller
real-time · wearable · portable · wireless · alert · alarm · surveillance · outpatient
arrhythmia
Abnormal cardiac rhythm
- ischemiaInsufficient tissue blood supply
- infarctionTissue necrosis from ischemia
- hypertrophyTissue enlargement via cells
electrodes
Electrical contact points
- leadsGoes in front
- tracingCopying by following lines
- calibrationAdjusting for measurement accuracy
artifact · gain · filter · precordial · Holter · signal · recording · placement · gel
P-wave
Longitudinal seismic wave
- isoelectricHaving equal charge
- baselineStandard for comparison
- depolarizationLoss of electrical gradient
repolarization · amplitude · duration · deflection · axis · vector · morphology · complex · interval · segment
cardiologist
Physician treating cardiovascular conditions
- electrophysiologyBiology's electrical activity science
- pacemakerDevice regulating heartbeat
- defibrillatorHeart-shocking medical device
ablation · cardioversion · catheterization · cardiac · sinoatrial · atrioventricular · myocardium · coronary
telemetry
Distant automated data collection
- ambulatoryAble to walk
- continuousWithout pause or gap
- bedsideNear the mattress
remote · real-time · wearable · portable · wireless · alert · alarm · surveillance · outpatient · inpatient
- -graphiesbiography, geography, photography, typography, cartography
- heartheartbeat, heart attack, heart muscle, heart rate, heart failure
- measurementscales, gauging, balance, metering, gram
electrocardiographyechocardiography
Ultrasound imaging of heart
PET scan · fluoroscopy · cardiac ultrasound · angiography · ultrasound
electrocardiographyelectroencephalography
Cerebral activity measurement technique
electromyography · spirometry · colonoscopy · endoscopy · urinalysis