A wave: Difference between revisions

Latest revision as of 18:18, 14 March 2016

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

The a wave is an upward deflection in the right atrial pressure that occurs during right atrial contraction.

See the main page on JVP waveforms for more details.

Shown below is an image depicting the typical a wave pattern as seen on an EKG.

Absence of a wave	Atrial fibrillation
Flutter of a wave	Atrial flutter
Prominent a waves	First-degree atrioventricular block
Large a waves	Tricuspid stenosis, Right atrial myxoma, Pulmonary hypertension, Pulmonic stenosis
Absent x descent	Tricuspid regurgitation
Prominent x descent	Conditions associated with large a waves
Slow y descent	Tricuspid stenosis, Right atrial myxoma
Rapid y descent	Constrictive pericarditis, severe Right heart failure, Tricuspid regurgitation, Atrial septal defect
Absent y descent	Cardiac tamponade

@@ Line 9: / Line 9: @@
 See the main page on [[Jugular venous pressure#JVP waveform|JVP waveforms]] for more details.
-[[Image:Jvp-waveform.jpg|left|frame|
+Shown below is an image depicting the typical a wave pattern as seen on an EKG.
+[[Image:Jvp-waveform.jpg|center|500px|frame|
 '''a''' = atrial contraction, occurs just before 1st heart sound and carotid pulse
 '''x''' = atrial relaxation
@@ Line 49: / Line 51: @@
 ==References==
 {{Reflist|2}}
+{{WH}}
+{{WS}}
+[[CME Category::Cardiology]]
 [[Category:Cardiology]]
-[[Category: Physical examination]]
+[[Category:Physical examination]]
 [[Category:Up-To-Date]]
-[[Category:Up-T0_Date cardiology]]
+[[Category:Up-To-Date cardiology]]
-{{WH}}
-{{WS}}