ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Heart and lung disease. Coloured X-ray of the chest of an 80 year old patient with heart and lung disease. The patient is a former miner and has chronic obstructive pulmonary disease (COPD) and an enlarged left ventricle (at centre right) of the heart. COPD is a collection of diseases that includes emphysema and chronic bronchitis. Damage to the lung tissue (seen as opaque plaques) reduces gas exchange in the lungs. The heart has to pump harder to get oxygen to the body. As it is a muscle, the heart grows if it has an increased work load. A pacemaker (upper right) has also been fitted , to supply electrical impulses to the heart to keep it beating regularly.
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