P-sinistrocardiale

P-sin·is·tro·car·di·a·le

(sin-is'trō-kar'dē-ā'lē), The final e is not silent.
An electrocardiographic P-wave characteristic of overloading of the left atrium; often erroneously called P-mitrale, as the syndrome can result from any overloading of the left atrium from any cause.