The prominent abnormalities in ECG were tachycardia (31.7%) and sinus arrhythmia (26.8%), while in UCG were pericardialeffusions.
心电图异常主要表现为窦性心动过速（31.7% ）、窦性心律不齐（26。 8% ）。
2
However, experience has taught us that other types of sonolucent space adjacent to the heart can sometime be mistaken for pericardialeffusions and loculated effusions in particular.