Cardiac tamponade causes
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Varun Kumar, M.B.B.S.
Overview
Causes
Cardiac tamponade occurs when the pericardial space fills up with fluid faster than the pericardial sac can stretch. If the amount of fluid increases slowly (such as in hypothyroidism) the pericardial sac can expand to contain a liter or more of fluid prior to tamponade occurring. If the fluid occurs rapidly (as may occur after trauma or myocardial rupture) as little as 100 ml can cause tamponade.[1]
Causes of increased pericardial effusion include hypothyroidism, trauma (either penetrating trauma involving the pericardium or blunt chest trauma), pericarditis (inflammation of the pericardium), iatrogenic trauma (during an invasive procedure), and ventricular rupture.
Cardiac tamponade is caused by a large or uncontrolled pericardial effusion, that is the buildup of fluid inside the pericardium. [2] This commonly occurs as a result of:
- Anticoagulant therapy [3].
- Aortic dissection [4]
- Chest trauma (both blunt & penetrating) [5]
- Malignancy
- Myocardial rupture
- Pericarditis
- Uraemia
- During cardiac surgery [6]
The effusion can occur rapidly (as in the case of trauma or myocardial rupture), or over a more gradual period of time (as in cancer). The fluid involved is often blood, but pus is also found in some circumstances. [7]
Myocardial rupture is a somewhat uncommon cause of pericardial tamponade. It typically happens in the subacute setting after a myocardial infarction (heart attack), in which the infarcted muscle of the heart thins out and tears. Myocardial rupture is more likely to happen in females, the elderly, patients with hypertension, and individuals without any previous cardiac history who suffer from their first heart attack and are not revascularized with thrombolytic therapy, percutaneous coronary intervention, or with coronary artery bypass graft surgery.[8] These patients often have single vessel disease without the development of collaterals.
References
- ↑ *Fornauer, Andrew (2003). "Pericardial Tamponade Complicating Central Venous Interventions". Journal of Vascular and Interventional Radiology. PMID 12582195. Unknown parameter
|coauthors=ignored (help); Unknown parameter|month=ignored (help) - ↑ Mattson Porth, C. (Ed.) (2005) (7th Ed.) Pathophysiology: Concepts of Altered Health States. Philadelphia : Lippincott Williams & Wilkins ISBN 978-0781749886
- ↑ Longmore, M., Wilkinson, I.B., Rajagopalan, S. (2004) (6th Ed.). Oxford Handbook of Clinical Medicine. Oxford: Oxford University Press ISBN 9780198568377
- ↑ Isselbacher, E.M., Cigarroa, J.E., Eagle, K.A. (1994). Cardiac tamponade complicating proximal aortic dissection. Is pericardiocentesis harmful? Circulation. Vol 90, 2375-2378
- ↑ Gwinnutt, C., Driscoll, P. (Eds) (2003) (2nd Ed.) Trauma Resuscitation: The Team Approach. Oxford: BIOS Scientific Publishers Ltd. ISBN 978-1859960097
- ↑ Mattson Porth, C. (Ed.) (2005) (7th Ed.) Pathophysiology: Concepts of Altered Health States. Philadelphia : Lippincott Williams & Wilkins ISBN 978-0781749886
- ↑ Mattson Porth, C. (Ed.) (2005) (7th Ed.) Pathophysiology: Concepts of Altered Health States. Philadelphia : Lippincott Williams & Wilkins ISBN 978-0781749886
- ↑ *Meniconi, A (2000). "How to survive myocardial rupture after myocardial infarction". Heart. 84 (5). PMID 11040020. Unknown parameter
|coauthors=ignored (help); Unknown parameter|month=ignored (help)