Notes in chapter II -- The ECG

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Published	06/26/2023	LO 2.3ventricular depolarization can be divided into three main phases first, venticular activation begins in the {{c1::septum}} as it is&nb…
Published	06/26/2023	LO 2.4 {{c1::bipolar leads}} record the electrical impulse between the two selected electrodes including leads {{c1::I, II, and III}}unipola…
Published	06/26/2023	LO 2.5 Lead I → {{c1::LA}} lead is positive and the {{c1::RA}} lead is negative Lead II → {{c2::LL}} lead is positive and the {{c2…
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Published	06/26/2023	the "standard" leads are leads {{c1::I, II, and III}} which are all bipolar leads
Published	06/26/2023	In Lead I, the waveforms are mostly {{c1::upright}} because the wave of depolarization including waves {{c1::P, R, and T}}
Published	06/26/2023	Lead II is commonly used for providing {{c1::continous ECG monitoring}} for emerging or exisiting cardiac disyrhthmias. the waveforms in Lead II …
Published	06/26/2023	in Lead III, the {{c1::P and T waves}} should be upright, while the QRS may be mostly {{c1::positive}} although the {{c1::R wave}} isn'…
Published	06/26/2023	leads aV, a means {{c1::augmented}} and V means {{c1::voltage}}, the subscribts {{c2::R, L, and F}} follow aV individually and mean&nbs…
Published	06/26/2023	lead V1 is particularly effective at showing the {{c1::P wave}}, the {{c1::QRS complex}}, and the {{c1::ST segment}}. It is helpful in …
Published	06/26/2023	lead V2 is has a view of the right ventricle and anterior wall of the heart, but it is more known for it's view of the {{c1::ventricular septum}}…
Published	06/26/2023	lead V3 views the {{c1::anterior wall}} of the {{c1::left ventricle}}
Published	06/26/2023	lead V4 views the {{c1::anterior wall}} of the {{c1::left ventricle}} and is close to the {{c1::heart's apex}}
Published	06/26/2023	lead V5 views the {{c1::lower lateral wall}} of the {{c1::left ventricle}}
Published	06/26/2023	lead 6 also views the {{c1::lower lateral wall}} of the {{c1::left ventricle}}
Published	06/26/2023	V6 is {{c1::smaller}} compared to V5
Published	06/26/2023	V1 through V4 are considered {{c1::anteriorseptal}}V3 through V6 are considered {{c1::anteriorlateral}}
Published	06/26/2023	15 and 18 leads are used to reveal MI's involving the {{c1::right ventricle}} and/or {{c1::posterior wall of left ventricle}}
Published	06/26/2023	LO 2.6 the {{c1::horizontal axis}} on ECG tells us about {{c1::rate and duration}}, while the verticle axis tells us about {{c1::e…
Published	06/26/2023	assess your understanding 2.1 and 2.2an electrocardiogram is a {{c1::graphic record of heart's electrical activity}}an electrocardiograph can det…
Published	06/26/2023	assess your understanding LO 2.3 three phases of depolarization first phase → ventricular activation begins in septum, depolarized from {{c1…
Published	06/26/2023	assess your understanding LO 2.4-2.5impulses that travel toward a positive electrode and away from a negative electrode are recorded on the electrocar…
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