The Myth of an Afterlife: The Case against Life After Death edited by Michael Martin and Keith Augustine, Rowman & Littlefield, 2015. ISBN 978-0-8108-8677-3. A Traveler's Guide to the Afterlife: Traditions and Beliefs on Death, Dying, and What Lies Beyond by Mark Mirabello, Ph.D. Inner Traditions.
In 1956, Proudfit and Effler 1 reported a simple method of performing pericardial biopsy which provides adequate amounts of tissue for bacteriologic and histologic study. Safe and effective pericardial drainage can be accomplished by the same procedure.
Pericardiocentesis is a considered a minor procedure, you can be out of the hospital the same day or the next day at the most if every thing goes well. The main serious complication of pericardial effusion is cardiac tamponade which is related to the rate of accumulation of the fluid rather that its amount.