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Unit 1
Biology
ECG
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ECG
stands for
Electrocardiogram.
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The term
'Electrocardiogram'
is split into three parts:
'Electro'
,
'Cardio'
, and
'Gram'.
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An
ECG
measures the
action potentials
of the heart.
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ECG
stands for
Electrocardiogram.
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ECG
stands for
Electrocardiogram.
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Electrodes
are placed on different
areas
of the
body
and the
electrical impulses
are
detected.
View source
These impulses are picked up by a
matching
and
amplified
device.
View source
The term
'Electrocardiogram'
is split into three parts:
'Electro'
,
'Cardio'
, and
'Gram'.
View source
An
ECG
measures the
action potentials
of the heart.
View source
The
P wave
on an
ECG
trace is the time of the
atrial systole
(
contraction
).
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Electrodes
are placed on different
areas
of the
body
and the
electrical impulses
are
detected.
View source
The
QRS complex
on an
ECG trace
is the time of the
ventricular systole
(
contraction
).
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These impulses are picked up by a
matching
and
amplified
device.
View source
The
T wave
on an ECG trace is caused by the
depolarisation
of the
ventricles
during
diastole
(
relaxation
and
recovery
).
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The
P wave
on an
ECG
trace is the time of the
atrial systole
(
contraction
).
View source
If the heart is
diseased
, the
hearts normal conduction pathways
are
disrupted
, causing the
ECG trace
to appear
different.
View source
The
QRS complex
on an
ECG trace
is the time of the
ventricular systole
(
contraction
).
View source
A different number of beats per minute (
60-100
is normal) on an ECG trace indicates a
heart disease.
View source
The
T wave
on an ECG trace is caused by the
depolarisation
of the
ventricles
during
diastole
(
relaxation
and
recovery
).
View source
ECGs
can be used to diagnose
CHD.
View source
If the heart is
diseased
, the
hearts normal conduction pathways
are
disrupted
, causing the
ECG trace
to appear
different.
View source
A different number of beats per minute (
60-100
is normal) on an ECG trace indicates a
heart disease.
View source
ECGs
can be used to diagnose CHD.
View source