Listen to any song, anywhere with Amazon Music Unlimited. Your Amazon Music account is currently associated with a different marketplace. To enjoy Prime Music, go to Your Music Library and transfer your account to Amazon.com (US). Sample this song. Title by Artist.
Pulmonary hypertension is high blood pressure within the artery that connects the lungs and heart. It forces the heart to work harder to transfer blood between the heart and lungs, which may lead to an enlargement of the right side. Thyroid problems, whether they involve an underactive or overactive thyroid, can cause a heart to enlarge.
The right and left sides of your heart do different jobs. The right side takes in blood that has travelled round the body and pumps it to the lungs. From here, the blood enters the left side of the heart from where it is pumped all round your body. Because the left side of the heart has to work harder to get blood round your body, it is usually this side that becomes enlarged when your blood pressure is too high. This is sometimes called left ventricular hypertrophy or LVH for short. In other words, it is another name for an enlarged heart.