Cardiovascular Diseases, Stroke Volume
Conditions
Brief summary
The purpose of this research is to better understand the use of heart ultrasounds to estimate heart function.
Detailed description
This research involves ultrasounds of the heart by two different emergency medicine doctors who are residents in training. Results from the two doctors will be compared to see how similar they are. This research will help us understand if heart ultrasounds can be used to see how well the heart pumps blood and if similar results are obtained from different doctors. The doctors will use ultrasound of the heart to measure E-Point Septal Separation (EPSS). EPSS is the distance between two parts of the heart, the mitral valve and the ventricular septum. EPSS is measured in millimeters (mm). EPSS can estimate left ventricular ejection fraction (LVEF) as a measure of how well the heart pumps blood.
Interventions
DIAGNOSTIC_TESTUltrasound
Participants will have ultrasounds of the heart by two different emergency medicine doctors.
Sponsors
The Guthrie Clinic
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Investigator)
Masking description
The doctor's doing the ultrasounds will be blinded to each other's measurements and to the patient's past medical history
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Healthy volunteers, or patients who come to the emergency department who may have a heart echocardiogram scheduled as part of their routine clinical care * Age 18 or over * Willing and able to provide informed consent
Exclusion criteria
* Pediatrics (age \<18 years old). * No cardiac-altering intervention performed between examiners. * Unable to obtain a parasternal long view with mitral valve anterior leaflet, interventricular septum and aortic root. * Transthoracic echocardiogram (TTE) more than the next day after EPSS is performed (for secondary outcome). * Female with known pregnancy. * Prisoner * Prior cardiac surgery
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mean change in millimeters between E-Point Septal Separation (EPSS) measurements of the heart by two physicians | During procedure | Two physicians will use the same ultrasound device to measure the E-Point Septal Separation (EPSS) on the same patients. EPSS is the distance between two parts of the heart, the mitral valve and the ventricular septum. The mean change in EPSS measurements in millimeter will be calculated. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Percent change in Left Ventricular Ejection Fraction (LVEF) estimated from ultrasound compared to a formal transthoracic echocardiogram. | During procedure | Percent change in Left Ventricular Ejection Fraction (LVEF) estimated from ultrasound compared to a formal transthoracic echocardiogram. LVEF (in %) will be estimated from ultrasound using the formula = 75.5 - (2.5 x E-Point Septal Separation in millimeters) |
Countries
United States
Outcome results
None listed