Reducing inappropriate transthoracic echocardiography orders in normotensive patients with acute pulmonary embolism in a community hospital: a quality improvement project

Transthoracic echocardiograms (TTEs) have limited value in guiding management of normotensive patients with acute pulmonary embolism (PE). Nevertheless, TTEs are frequently ordered inappropriately. This quality improvement project aimed to decrease inappropriate TTE orders by 30% over 6 months in patients with PE admitted to general internal medicine at a community hospital. Two interventions were implemented using successive plan-do-study-act (PDSA) cycles: educational sessions for physicians and the distribution of TTE-ordering algorithms for triaging of TTE appropriateness. Four audits on TTE orders for inpatients with PE were conducted throughout the project: a pre-intervention audit (pre-audit; March to August 2020), a post-intervention 1 audit (post-I1; August to September 2022), a post-intervention 2 audit (post-I2; December 2022 to February 2023) and a post-intervention audit (post-audit; March to August 2023). The primary outcome measure was the proportion of inappropriate to appropriate TTE orders during the pre-intervention and post-intervention periods. During the pre-audit, post-I1, post-I2 and post-audit periods, 89, 23, 20 and 158 patients, respectively, were admitted with PEs. 37, 10, 3 and 14 patients in each of these periods, respectively, received a TTE for PE-related reasons and were therefore included in the audits. 42%, 43%, 15% and 24% of patients, respectively, received a TTE for PE-related reasons. 89%, 50%, 67% and 79% of those TTEs, respectively, were inappropriate. There was a transient decrease in inappropriate to appropriate TTE orders ratio after the first intervention (p<0.005). Inappropriate investigations lead to additional healthcare costs and delays in patient care. This quality improvement project highlights an ongoing need to increase awareness surrounding TTE indications to improve appropriate utilisation. Next steps include further PDSA cycles with additional interventions to continue to try and decrease inappropriate TTE orders in the community hospital setting.