The crucial resources necessary to manage patients with ICH include neurology, neuroradiology, neurosurgery, and critical Table 2. Definition of Classes and Levels of Evidence Used in AHA/ASA Recommendations Class I Conditions for which there is evidence for and/ or general agreement that the procedure or treatment is useful and effective Class II Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment Class IIa The weight of evidence or opinion is in favor of the procedure or treatment Class IIb Usefulness/efficacy is less well established by evidence or opinion Class III Conditions for which there is evidence and/ or general agreement that the procedure or treatment is not useful/effective and in some cases may be harmful Therapeutic recommendations Level of Evidence A Data derived from multiple randomized clinical trials or meta-analyses Level of Evidence B Data derived from a single randomized trial or nonrandomized studies Level of Evidence C Consensus opinion of experts, case studies, or standard of care Diagnostic recommendations Level of Evidence A Data derived from multiple prospective cohort studies using a reference standard applied by a masked evaluator Level of Evidence B Data derived from a single grade A study or one or more case-control studies, or studies using a reference standard applied by an unmasked evaluator Level of Evidence C Consensus opinion of experts AHA/ASA indicates American Heart Association/American Stroke Association. Hemphill et al Management of Spontaneous ICH 2035 care facilities that include adequately trained nurses and phy- sicians. Consultants should be contacted as quickly as pos- sible while the patient is in the ED, and the clinical evaluation should be performed efficiently, with physicians and nurses working in parallel. 