Sentence:  It is also possible to utilize a pressure transducer , mounted at the end of a catheter which is inserted into the heart 's <WSD>left</WSD> ventricle , to indicate the blood pressure in the heart itself . 
Meaning of the word marked with <WSD> tags:  the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta