The parasternal long axis (PLA) is the first image in a transthoracic echocardiogram (TTE). It is an important window because it allows assessment of the left ventricular ejection fraction (LVEF) and measurement of the LV outflow tract diameter (LVOTD).
- Parasternal long axis (PLA)
- Left ventricle
- Left ventricular outflow tract diameter (LVOTD)