Training guidelines for ultrasound: worldwide trends

Evaluation of diagnostic efficiency of bedside cardiac ultrasonography performed by emergency specialist

BACKGROUND

In emergency medicine, ultrasound is frequently used in the diagnostic and therapeutic procedures and evaluation of treatment of critically ill patients simultaneously, due to its bedside applicability, rapidness and inexpensive cost.

AIM

The competence of emergency physician in focused cardiac ultrasound evaluations and the success of diagnosing cardiac diseases were evaluated in a patient group presenting to the emergency department with complaints of non-traumatic chest pain and shortness of breath.

METHODS

We included patients with complaints of chest pain and shortness of breath and underwent cardiac ultrasound performed by emergency physician. Then, patients were evaluated by a cardiologist. The diagnoses made by the emergency physician were compared with the diagnoses made by the cardiologist.

RESULTS

A total of 303 patients were included. The diagnoses made by the emergency medicine specialist and cardiologist as a result of the evaluation were recorded as 56.7% vs 52.10% for acute coronary syndrome, 29.70% vs 31.60% for congestive heart failure, 3.6% vs 3.30% for pulmonary embolism, 2.1% vs 2.10% for hypertensive pulmonary edema, 1.9% vs 2.10% for pericarditis, and 0.60% vs 1.30% for aortic dissection.

CONCLUSION

It was determined that focused cardiac ultrasound performed by emergency physician was sufficient in terms of accuracy of findings and diagnosis, and played an important role in excluding or including fatal diagnoses and conditions. The success rates of emergency physician can be further increased with long-term and comprehensive training programs.

Solid, Cystic, and Tubular: Novice Ultrasound Skills Training Using a Versatile, Affordable Practice Model

OBJECTIVE

In spite of the recognized benefits of ultrasound, many physicians have little experience with using ultrasound to perform procedures. Many medical schools and residency programs lack a formal ultrasound training curriculum. We describe an affordable ultrasound training curriculum and versatile, inexpensive practice model.

DESIGN

Participants underwent a didactic session to teach the theory required to perform ultrasound-guided procedures. Motor skills were taught using a practice model incorporating analogs of common anatomic and pathologic structures into an opacified gelatin substrate.

SETTING

The Marcia and Eugene Applebaum Simulation Learning Institute, Beaumont Hospital, Royal Oak, MI; a private nonprofit tertiary care hospital associated with the OUWB School of Medicine, Rochester, MI.

PARTICIPANTS

The model was tested in a cohort of 50 medical students and general surgery residents.

RESULTS

The gelatin model can be constructed for $1.03 per learner. The solid, cystic, and vascular structural analogs were readily identifiable on ultrasound and easily differentiated based on their echotextures. Eighty-four percent of participants successfully aspirated the cystic structure, 88% successfully biopsied a portion of the solid structure, and 76% successfully cannulated the tubular structure. Overall, 82% of participants achieved a passing score for the exercise based on a validated Objective Structured Assessment of Technical Skill instrument. There were no significant differences between the medical students and residents.

CONCLUSION

This model can be used to teach basic ultrasound skills such as aspiration, biopsy, and vessel cannulation, providing a foundation for the use of ultrasound in a broad range of clinical procedures, as well as providing practice opportunities for medical students and residents to gain increased ultrasound competency and confidence.

Intensive care unit physician-delivered point of care renal tract ultrasound in acute kidney injury is feasible

Acute kidney injury is common in critically ill patients, with ultrasound recommended to exclude renal tract obstruction. Intensive care unit clinicians are skilled in acquiring and interpreting ultrasound examinations. Intensive Care Medicine Trainees wish to learn renal tract ultrasound. We sought to demonstrate that intensive care unit clinicians can competently perform renal tract ultrasound on critically ill patients. Thirty patients with acute kidney injury were scanned by two intensive care unit physicians using a standard intensive care unit ultrasound machine. The archived images were reviewed by a Radiologist for adequacy and diagnostic quality. In 28 of 30 patients both kidneys were identified. Adequate archived images of both kidneys each in two planes were possible in 23 of 30 patients. The commonest reason for failure was dressings and drains from abdominal surgery. Only one patient had hydronephrosis. Our results suggest that intensive care unit clinicians can provide focussed renal tract ultrasound. The low incidence of hydronephrosis has implications for delivering the Core Ultrasound in Intensive Care competencies.

Focused transthoracic echocardiography

Caring for critically ill patients requires rapid and accurate diagnosis followed by prompt interventions. The physical examination remains an important part of the assessment of such patients, but it has been shown to have a low sensitivity and specificity in judging left ventricular function and intravascular volume. Invasive hemodynamic monitoring has similarly been shown to have significant limitations and has failed to demonstrate a mortality benefit in several recent studies. In some studies, it has been shown to be harmful. Focused transthoracic echocardiography (TTE) has emerged as a noninvasive and portable imaging technique that is capable of providing rapid and accurate information about the heart at the bedside. It can be used to complement the physical examination and result in marked improvement in diagnostic accuracy. Focused TTE can be used as a screening and monitoring tool. Studies have shown that clinicians can be trained to determine left ventricular function, detect pericardial effusions, predict intravenous fluid responsiveness, and identify important valvular defects in a relatively short period. This article describes the indications for focused TTE, provides evidence that clinicians can be rapidly taught the technique, reviews how the focused studies affect management, and discusses the advantages and limitations of this tool.