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#Leads V7-V8-V9 can be used to diagnose a posterior infarct. After V6, leads are placed towards the back. See the chapter[[Ischemia]] for other ways of diagnosing posterior infarction. | #Leads V7-V8-V9 can be used to diagnose a posterior infarct. After V6, leads are placed towards the back. See the chapter[[Ischemia]] for other ways of diagnosing posterior infarction. | ||
===Leads to improve detection of atrial rhyhtm=== | ===Leads to improve detection of atrial rhyhtm=== | ||
In wide complex tachycardia, good detection of atrial rhythm and atrio-ventricular dissociation can be very helpful in the diagnosis process. An esophagal ECG electrode placed close to the atria can be helpful. Another, less invasive, method is the '''Lewis Lead'''. This is recorded by changing the limb electrodes, placing the right arm electrode in the second intercostal space and the left arm electrode in the fourth intercostal space, both to the right of the sternum. Furthermore gain is increased to 20mm/mV and paper speed to 50mm/sec.<cite>Lewis1</cite> | In wide complex tachycardia, good detection of atrial rhythm and atrio-ventricular dissociation can be very helpful in the diagnosis process. An esophagal ECG electrode placed close to the atria can be helpful. Another, less invasive, method is the '''Lewis Lead'''. This is recorded by changing the limb electrodes, placing the right arm electrode in the second intercostal space and the left arm electrode in the fourth intercostal space, both to the right of the sternum. Furthermore gain is increased to 20mm/mV and paper speed to 50mm/sec.<cite>Lewis1</cite>ß | ||
===Lead positioning to enhance detection of Brugada syndrome=== | ===Lead positioning to enhance detection of Brugada syndrome=== | ||
[[Image:Brugada_lead_placement.png|thumb | [[Image:Brugada_lead_placement.png|thumb|Changed lead positions of leads V3 and V5 to increase the sensitiviy to 'catch' a [[Brugada]] pattern on the ECG. ]] | ||
===Other lead systems=== | |||
Vector cardiography using 15 leads and body surface mapping using multiple electrode-arrays are systems that are mostly used in research settings only. | |||
{{clr}} | {{clr}} | ||