A 25-year-old male presents to the Emergency Department with chest pain and shortness of breath following a motor vehicle collision. His vital signs show BP 100/70 mmHg, HR 110/min, RR 24/min. A bedside echo is performed.
Which of the following echocardiographic findings would be the earliest indicator of cardiac tamponade?
A
Right atrial collapse in diastole
B
Right atrial collapse in systole
C
Right ventricular diastolic collapse
D
Left ventricular diastolic collapse
E
Swinging heart motion