Obstructive shock
Obstructive shock is a form of shock associated with physical obstruction of the great vessels or the heart itself.[1] Pulmonary embolism and cardiac tamponade are considered forms of obstructive shock.[2]
Obstructive shock has much in common with cardiogenic shock, and the two are frequently grouped together.[3]
Some sources do not recognize obstructive shock as a distinct category, and categorize pulmonary embolism and cardiac tamponade under cardiogenic shock.[citation needed]In obstructive shock, CO is decreased, CVP is elevated, SVR is increased, and PAOP is increased which is similar to cardiogenic shock.[1] Obstructive shock can most easily be differentiated from cardiogenic shock by considering the greater clinical picture in the context of the PA catheter data (or echocardiography)[citation needed]
Causes
Among possible causes are:[citation needed]
- Cardiac tamponade
- Constrictive pericarditis (late stage)
- Aortic stenosis
- Tension pneumothorax
- Massive pulmonary embolism
- Anterior mediastinal mass
Diagnosis
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References
- ^ a b "Shock: Shock and Fluid Resuscitation: Merck Manual Professional".
- ^ "Definition: cardiopulmonary obstructive shock from Online Medical Dictionary".
- ^ Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease. St. Louis, Mo: Elsevier Saunders. p. 141. ISBN 0-7216-0187-1.