... Critical Care Vol 11 No Sleeswijk et al Table Questions regarding the prevalence and treatment of atrial fibrillation in medical intensive care unit patients What is the pathophysiology of atrial fibrillation ... nosocomial complications Can treatment of atrial fibrillation improve survival? There are few data on the effect of treatment of AF on mortality in ICU patients A meta-analysis in non-ICU patients ... the atria [29,30] Hypovolaemia and hypervolaemia or a sudden increase in afterload, as in pulmonary embolism, and mitral or tricuspid valve dysfunction are examples of increased atrial workload...