ECG Basics - Revision history

Rossdonaldson1: Changed redirect target from ECG (Main) to ECG (main)

2019-11-28T23:48:52Z

Changed redirect target from ECG (Main) to ECG (main)

2014-02-05T06:13:34Z

Redirected page to ECG (Main)

← Older revision		Revision as of 06:13, 5 February 2014
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	~~== General ==~~		#REDIRECT[[ECG (Main)]]
	*1 small box = 1mm = 0.04 sec = 40 miliseconds
	*5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds
	*Entire ECG strip is ~10 seconds

	~~==Rhythms==~~
	*[[Arrhythmias]]

	~~== Intervals ==~~
	~~{\| style="width: 318px; height: 87px" cellspacing="1" cellpadding="1" border="1"~~
	\|-
	~~\| Interval~~
	~~\| Time (s)~~
	~~\| Boxes~~
	\|-
	~~\| PR~~
	~~\| 0.12 - 0.20~~
	~~\| 3-5~~
	\|-
	~~\| QRS~~
	~~\| .06 - 0.10~~
	~~\| 1.5-2.5~~
	\|-
	~~\| QTc~~
	~~\| <0.44~~
	~~\| N/A~~
	\|}

	~~==Segments==~~
	*[[ST Elevation]]
	*[[ST Depression]]
	*[[QT Prolongation]]

	~~==Axis==~~
	*Cannot be measured if BBBs are present
	*If up in leads 1 and AVF then normal axis

	~~==Waves==~~
	*[[Q Waves]]
	*[[T Waves]]

	~~==Hypertrophy/Enlargement==~~
	*[[RAE]]
	*[[LAE]]
	*[[LVH]]
	*[[RVH]]

	~~==Blocks==~~
	*[[RBBB]]
	*[[LBBB]]
	*[[LAFB]]
	*[[LPFB]]

	~~== [[Low ECG Voltage]] ==~~

	~~==See Also==~~
	*[[ECG (Main)]]

	~~== Source ==~~
	*Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
	*Journal of Electrocardiology. Vol 43 (2010). 40-42.

	~~[[Category:Cards~~]]

2014-02-05T06:10:03Z

← Older revision		Revision as of 06:10, 5 February 2014
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	== General ==		== General ==

	*1 small box = 1mm = 0.04 sec = 40 miliseconds		*1 small box = 1mm = 0.04 sec = 40 miliseconds
	*5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds		*5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds
	*Entire ECG strip is ~10 seconds		*Entire ECG strip is ~10 seconds

			==Rhythms==
			*[[Arrhythmias]]

	== Intervals ==		== Intervals ==

	{\| style="width: 318px; height: 87px" cellspacing="1" cellpadding="1" border="1"		{\| style="width: 318px; height: 87px" cellspacing="1" cellpadding="1" border="1"
	\|-		\|-

2014-02-05T05:58:46Z

2014-02-05T05:56:45Z

2014-02-05T05:52:59Z

Low ECG Voltage

← Older revision		Revision as of 05:52, 5 February 2014
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	== [[Low ECG Voltage]] ==		== [[Low ECG Voltage]] ==
	~~#QRS < 5 mm in limb leads, or~~
	~~#QRS < 10 mm in chest leads~~
	#From either low electrical power within the heart (e.g. hypothyroidism), or low conduction within the heart (e.g. sarcoid or scar tissue), or poor conduction from the heart to the ECG lead (e.g. obesity, COPD, pericardial effusion
	~~#Low voltage + tachycardia = pericardial effusion until proven otherwise~~

	==See Also==		==See Also==

2014-02-05T05:52:08Z

Low Voltage

← Older revision		Revision as of 05:52, 5 February 2014
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	*[[LPFB]]		*[[LPFB]]

	== Low Voltage ==		== [[Low ECG Voltage]] ==
	#QRS < 5 mm in limb leads, or		#QRS < 5 mm in limb leads, or
	#QRS < 10 mm in chest leads		#QRS < 10 mm in chest leads
	#From either low electrical power within the heart (e.g. hypothyroidism), or low conduction within the heart (e.g. sarcoid or scar tissue), or poor conduction from the heart to the ECG lead (e.g. obesity, COPD, pericardial effusion		#From either low electrical power within the heart (e.g. hypothyroidism), or low conduction within the heart (e.g. sarcoid or scar tissue), or poor conduction from the heart to the ECG lead (e.g. obesity, COPD, pericardial effusion
	#Low voltage + tachycardia = pericardial effusion until proven otherwise		#Low voltage + tachycardia = pericardial effusion until proven otherwise


	==See Also==		==See Also==

2014-02-05T05:50:23Z

← Older revision		Revision as of 05:50, 5 February 2014
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	*If up in leads 1 and AVF then normal axis		*If up in leads 1 and AVF then normal axis

	==~~ECG~~ Waves==		==Waves==
	*[[Q Waves]]		*[[Q Waves]]
			*[[T Waves]]
	== [[T Waves]] ==
	*Normally upright in 1, 2, V3-V6
	*Negative in AVR
	*If is greater than 2/3 height of R wave then is abnormal
	*Deep symmetrical inverted T waves:
	~~#Left ventricle apical hypertrophy~~
	~~#Raised ICP (e.g. [[SAH]])~~
	~~#Wellen's (MI)~~
	~~#Paced rhythm~~
	~~#BBB's or [[WPW]]~~
	~~#Idiopathic~~

	==Hypertrophy/Enlargement==		==Hypertrophy/Enlargement==

2014-02-05T05:48:44Z

Q Waves

← Older revision		Revision as of 05:48, 5 February 2014
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	==ECG Waves==		==ECG Waves==
	== [[Q Waves]] ==		*[[Q Waves]]
	*Significant if >1 box wide or if is 1/3 of entire QRS amplitude
	*Early Repolarization:
	**[[ST Elevation]] most prominent in lat precord leads (V4-6) but no reciprocal changs
	**T waves usually broad, tall (>5mm) & upright
	**Limb leads may also have ST elevation, rarely >2 mm

	== [[T Waves]] ==		== [[T Waves]] ==

2014-02-05T05:47:23Z

← Older revision		Revision as of 05:47, 5 February 2014
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	*If up in leads 1 and AVF then normal axis		*If up in leads 1 and AVF then normal axis

			==ECG Waves==
	== Q ~~waves~~ ==		== [[Q Waves]] ==
	*Significant if >1 box wide or if is 1/3 of entire QRS amplitude		*Significant if >1 box wide or if is 1/3 of entire QRS amplitude
	*Early Repolarization:		*Early Repolarization:
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	**Limb leads may also have ST elevation, rarely >2 mm		**Limb leads may also have ST elevation, rarely >2 mm

	== T ~~waves~~ ==		== [[T Waves]] ==
	*Normally upright in 1, 2, V3-V6		*Normally upright in 1, 2, V3-V6
	*Negative in AVR		*Negative in AVR