Table 2 Echocardiogram Indications, breakdown of indications for echocardiograms prior to the sonographer driven protocol (Pre) and following the protocol to allow sonographer administration of echocardiography image enhancer (Post). No significant differences were noted, p = 0.375 by Chi-Squared

From: Improved efficiency and diagnostic utility of inpatient transthoracic echocardiography following implementation of a sonographer-initiated perflutren-based contrast administration protocol