The clinical effects following a pulmonary embolism can be graded using a clinical classification scheme.
Parameters:
(1) symptoms
(2) hemodynamic change
(3) pulmonary artery obstruction
|
Symptoms
|
Hemodynamic Changes
|
Pulmonary Artery Obstruction
|
Class
|
|
none
|
none
|
< 40%
|
0
|
|
present
|
none
|
< 40%
|
1
|
|
present
|
none or minor
|
>= 40%
|
2
|
|
shock
|
major
|
NA
|
3
|
|
cardiac arrest
|
major
|
NA
|
4
|
where:
• The occlusion of 2 or more lobar arteries implies greater than 40% pulmonary circulatory obstruction.
