Heart pacemaker. Coloured chest X-ray showing a surgically-implanted heart pacemaker (red,centre right). The pacemaker supplies electrical impulses along leads (running to lower centre) to the heart to keep it beating regularly. It is fitted in patients with a malfunctioning sinoatrial node,the part of the heart that initiates each heartbeat,or those with a heart block impairing the nerve impulses generated by the node. Heart pacemakers may provide a regular impulse (fixed rate pacemaker) or discharge only when a heartbeat is missed (demand pacemaker) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PHT |
Bildgröße: | 4158 px × 3522 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |