Test Characteristics of Cardiac Point-of-Care Ultrasound in Children With Preexisting Cardiac Conditions.

OBJECTIVE: The aim of the study is to assess diagnostic performance of cardiac point-of-care ultrasound (POCUS) performed by pediatric emergency medicine (PEM) physicians in children with preexisting cardiac disease. METHODS: We evaluated the use of cardiac POCUS performed by PEM physicians among a convenience sample of children with preexisting cardiac disease presenting to a tertiary care pediatric ED. We assessed patient characteristics and the indication for POCUS. The test characteristics of the sonologist interpretation for the assessment of both pericardial effusion as well as left ventricular systolic dysfunction were compared with expert POCUS review by PEM physicians with POCUS fellowship training. RESULTS: A total of 104 children with preexisting cardiac disease underwent cardiac POCUS examinations between July 2015 and December 2017. Among children with preexisting cardiac disease, structural defects were present in 72%, acquired conditions in 22%, and arrhythmias in 13% of patients. Cardiac POCUS was most frequently obtained because of chest pain (55%), dyspnea (18%), tachycardia (17%), and syncope (10%). Cardiac POCUS interpretation compared with expert review had a sensitivity of 100% (95% confidence interval [CI], 85.7-100) for pericardial effusion and 100% (95% CI, 71.5-100) for left ventricular systolic dysfunction; specificity was 97.5% (95% CI, 91.3.1-99.7) for pericardial effusion and 98.9% (95% CI, 93.8-99.8) for left ventricular systolic dysfunction. CONCLUSIONS: Cardiac POCUS demonstrates good sensitivity and specificity in diagnosing pericardial effusion and left ventricular systolic dysfunction in children with preexisting cardiac conditions when technically adequate studies are obtained. These findings support future studies of cardiac POCUS in children with preexisting cardiac conditions presenting to the ED.

Use of Cardiac Point-of-Care Ultrasound in the Pediatric Emergency Department.

OBJECTIVES: We sought to describe the test characteristics of cardiac point-of-care ultrasound (POCUS) performed by pediatric emergency medicine (PEM) physicians after structured cardiac POCUS training. METHODS: We evaluated the use of clinically indicated cardiac POCUS by PEM physicians in a single tertiary care pediatric emergency department after implementation of a focused cardiac POCUS training curriculum. The test characteristics of the sonologist interpretation were compared with expert POCUS review, by PEM physicians who have completed PEM POCUS fellowship training, for the assessment of both pericardial effusion and left ventricular systolic dysfunction. RESULTS: A total of 1241 cardiac POCUS examinations were performed between July 2015 and December 2017, of which 456 were clinically indicated and underwent expert POCUS review and comprised the study sample. These examinations were performed by 33 different PEM attending sonologists. Chest pain (52%), dyspnea (20%), and tachycardia (18%) were the most common indications for cardiac POCUS. Prevalence of pericardial effusion and global systolic dysfunction based on expert POCUS review were 11% (48/443) and 4% (16/435), respectively. Real-time cardiac POCUS interpretation had a sensitivity and specificity of 100% and 99.5%, respectively, for both pericardial effusion and left ventricular systolic dysfunction when compared with expert POCUS review. CONCLUSIONS: Cardiac POCUS is both sensitive and specific for identifying pericardial effusion and left ventricular systolic dysfunction when performed by PEM attendings with focused training.

Pediatric Residency Point-of-Care Ultrasound Training Needs Assessment and Educational Intervention.

Background Prior studies showed that point-of-care ultrasound (POCUS) training is not commonly offered in pediatric residency. We assessed the need for a pediatric POCUS curriculum by evaluating pediatric trainees' attitudes toward the use of POCUS and identifying barriers to training. We also aimed to evaluate the impact of a POCUS educational intervention on self-efficacy and behavior. Methods We conducted a cross-sectional survey of pediatric residents in a single large freestanding children's hospital distributed via an institutional listserv and administered online. The survey included opinion-rating of statements regarding POCUS and barriers to training. We also offered a two-week POCUS course with online modules and hands-on scanning. Participating residents completed pre- and post-course knowledge assessments and follow-up surveys up to 12 months following the course to assess POCUS use and self-report confidence on POCUS indications, acquisition, interpretation, and clinical application. Results Forty-nine respondents were included in the survey representing all three pediatric levels with 16 specialty interest areas. Ninety-six percent of trainees reported that POCUS is an important skill in pediatrics. Ninety-two percent of trainees reported that residency programs should teach residents how to use POCUS. The most important perceived barriers to POCUS training were scheduling availability for POCUS rotations and lack of access to an ultrasound machine. Fourteen participants completed the pre- and post-course knowledge tests, with eight and six participants also completing the six- and 12-month follow-up surveys, respectively. Self-ratings of confidence were significantly improved post-intervention in indications (P = 0.007), image acquisition (P = 0.002), interpretation (P = 0.002), and clinical application (P = 0.004). This confidence improvement was sustained up to 6-12 months (P = 0.004-0.032). Participants also reported higher categorical POCUS use after course completion (P = 0.031). Conclusions Pediatric trainees perceive POCUS as an important skill, hold favorable opinions towards the use of POCUS, and support POCUS training within a pediatric residency. A POCUS course can improve resident POCUS knowledge, instill confidence, and motivate higher POCUS use. Further study is needed to evaluate POCUS applications in pediatric medicine to develop a standardized POCUS curriculum and establish a training guideline for pediatric residency.