Download JVP

Definition
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Jugular Venous Pulse:
defined as the oscillating top of vertical
column of blood in right IJV that reflects
pressure changes in Right Atrium in cardiac
cycle.
Jugular Venous Pressure:
Vertical height of oscillating column of
blood.
Why Internal Jugular Vein?
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IJV has a direct course to RA.
IJV is anatomically closer to RA.
IJV has no valves( Valves in EJV prevent
transmission of RA pressure)
Vasoconstriction Secondary to hypotension
( in CCF) can make EJV small and barely
visible.
Why Right Internal Jugular Vein?
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Right jugular veins extend in an almost straight
line to superior vena cava, thus favouring
transmission of the haemodynamic changes
from the right atrium.
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The left innominate vein is not in a straight line
and may be kinked or compressed between
Aortic Arch and sternum, by a dilated aorta, or
by an aneurysm.
Difference from Carotid Pulse
Venous Pulse
More lateral
Wavy, Undulant
Decrease with Inspiration
Increase in supine position
^with abdominal pressure
Double Peaked
Obliterated with Pressure
Better Visible
Better viewed from foot
end of bed
Carotid Pulse
Medial
Forceful, Brisk
No change
No change
No change
Single Peak
Cannot be Obliterated
Better palpated
Method Of Examination
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The patient should lie comfortably during the examination.
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Clothing should be removed from the neck and upper thorax.
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Patient reclining with head elevated 45 °
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Neck should not be sharply flexed.
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Examined effectively by shining a light tangentially across the
neck.
There should not be any tight bands around abdomen
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Observations Made
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the level of venous pressure.
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the type of venous wave pattern.
The level of venous pressure
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Using a centimeter ruler, measure the vertical distance
between the angle of Louis (manubrio sternal joint) and the
highest level of jugular vein pulsation.
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The upper limit of normal is 4 cm above the sternal angle,.
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Add 5 cm to measure central venous pressure since right
atrium is 5 cm below the sternal angle.
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Normal CVP is < 9 cm H2O
Normal pattern of the jugular venous pulse
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The normal JVP reflects phasic pressure changes in
the right atrium and consists of three positive waves
and two negative troughs
Simultaneous palpation of the left carotid artery aids
the examiner in relating the venous pulsations to the
timing of the cardiac cycle.
a WAVE
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Venous distension due to RA contraction
Retrograde blood flow into SVC and IJV
Synchronous with S1, Follow P of ECG
Precede Carotid pulse
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The x descent: is due to
X Atrial relaxation
X` Descent of the floor of the right atrium
during right ventricular systole.
Begins during systole and ends before S2
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The c wave:
Occurs simultaneously with the carotid pulse
Artifact by Carotid pulsation
Bulging of TV into RA during ICP
v WAVE
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Rising right atrial pressure when blood flows into the right
atrium during ventricular systole when the tricuspid valve is
shut.
Synchronous with Carotid pulse
Begins in early systole, Peaks after S2 and ends in early
diastole
y DESCENT
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The decline in right atrial pressure when the tricuspid valve
reopens
Following the bottom of the y descent and before beginning of
the a wave is a period of relatively slow filling of the ventricle,
the diastases period, a wave termed the h wave.
Identifying Wave Forms
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The x descent occurs just prior to the second heart sound (
during systole), while the y descent occurs after the second heart
sound (during diastole).
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Normally X descent is more prominent than Y descent. Y
descent is only sometimes seen during diastole. Descents are
better seen than positive waves.
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The a wave occurs just before the first sound or carotid pulse
and has a sharp rise and fall.
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The v wave occurs just after the arterial pulse and has a slower
undulating pattern.
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The c wave is never seen normally.
Abnormalities of jugular venous
pulse
A.
Low jugular venous pressure
1. Hypovolaemia.
B. Elevated jugular venous pressure
1. Intravascular volume overload conditions
Right ventricular infarction
Left heart failure
Myocardial infarction.
Valvular Heart Disease
Cardiomyopathy
2. Constrictive pericarditis.
3. Pericardial effusion with tamponade
Elevated “a” wave
Increased Resistance to
RV Filling.
Tricuspid stenosis
R Heart Failure
PS
PAH
Cannon “a” wave
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Atrialventricular
Dissociation
(atria contract against
a closed tricuspid
valve)
Complete heart block
VPC
Ventricular
tachycardia
Ventricular pacing
Junctional rhythm
Junctional
tachycardia.
Absent “a” wave
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1. Atrial fibrillation
Elevated “v” wave
1. Tricuspid regurgitation.
2. Right ventricular failure.
3. Restrictive cardiomyopathy.
4. Cor Pulmonale
Tricuspid regurgitation
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Absent X Decsent
CV/ Regurgitant Wave
Has a rounded contour
and a sustained peak
Followed by a rapid deep
Y descent
Amplitude of V increases
with inspiration.
Cause subtle motion of
ear lobe with each heart
beat
“a” wave equal to “v” wave
ASD
Prominent X descent
followed by a large V
wave
M Configuration
Indicates a large L-R
shunt
With PAH A wave
becomes more
prominent
If L JVP > R JVP
indicates associated
PAPVC
Prominent “x” descent
1.
2.
3.
4.
5.
Cardiac tamponade.
Constrictive Pericarditis
RVMI
Restrictive Cardiomyopathy
Atrial septal defect
Blunted “x” descent
1. Tricuspid regurgitation.
2. Right atrial ischaemia
Prominent “y” descent
1. Constrictive pericarditis.
2. Tricuspid regurgitation.
3. Atrial septal defect.
Absent “y” descent
1. Cardiac tamponade.
2. Right ventricular infarction
3. Restrictive Cardiomyopathy
Slow “y” descent
1. Tricuspid stenosis.
2. Right atrial myxoma.
Constrictive pericarditis.
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M shaped contour
Prominent X and Y descent (FRIEDREICH`SIGN)
Y descent is prominent as ventricular filling is
unimpeded during early diastole.
This is interrupted by a rapid raise in pressure as the
filling is impeded by constricting Pericardium
The Ventriclar pressure curve exhibit Square Root sign
Abdomino-jugular reflux
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Is positive when JVP increase after 10 sec of abdominal
pressure followed by a rapid drop in pressure of 4 cm on
release of compression.
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Most common cause of a positive test is RHF
Positive test in: Borderline elevation of JVP
Silent TR
Latent RHF
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False positive: Fluid overload
False Negative: SVC/IVC obstruction
Budd Chiari syndrome
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Positive Test imply SVC and IVC are patent
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Kussmaul sign
Failure of decline in JVP occur during inspiration.
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Constrictive Pericarditis
Severe RHF
Restrictive Cardiomyopathy
Tricuspid Stenosis