At rest, a healthy sinus node produces electrical impulses for a heart rate of between 60 and 100 beats per minute. This is anormal sinus rhythmor normal heart rhythm.1 Sick sinus syndrome occurs when damage or disease to the sinus node causessinusarrhythmia(irregular sinus signals) that is ...
Case summary A 67-year-old woman with a history of sick sinus syndrome underwent placement of a dual-chamber pacemaker in 1993 and generator change in 2001 (Integrity AFx DR 5342, St. Jude Medical, Inc., St. Paul, MN, USA). Pacing was programmed to DDDR mode with a lower rate limit...
Another condition that affects the heart conduction system is called sick sinus syndrome (SSS) or sinus node disease. It affects the sinoatrial node and causes the heart to beat slower or faster than normal. It can also contribute to an increased heart rate during exercise. Ion channels, tiny...
Heart rate vs. pulse rate While the two go hand in hand, they are different. Your heart rate is a measure of the number of times yourheart beatsin a minute. With each beat, your heart squeezes. That creates enough pressure to push blood out of your heart to the rest of your body ...
M. BrignoleSpringer MilanMenozzi, C.; Brignole, M. Carotid sinus syndrome: what is the clinical relevance of the vasopressor component and how to manage it? In: Raviele, A. Cardiac arrhytthmias. Milan: Springer-Verlag.1998; 368-375....
Effects of permanent pacemaker and oral theophylline in sick sinus syndrome the THEOPACE study: a randomized controlled trial. Pacemakers and theophylline are currently being used to relieve symptoms in patients with sick sinus syndrome (SSS). However, the impact of either therapy ... P Alboni,C...
A faulty thyroid causes a drop in pulse pressure, indicating poorheart function. Because blood flow is diverted away from the skin, the extremities become cold. If you notice any of these symptoms, see a doctor to be tested. Most people quickly regain their normal energy levels and feel warm...
Sinus arrhythmia is a kind of arrhythmia. For people suffering from this condition, the time between heartbeats can be slightly shorter or longer depending on whether they’re breathing in or out. A sinus arrhythmia is due to a problem with the sinus node of the heart. There are different ...
If the damage within the heart’s electrical system is causing a slow heart rate, you may be eligible for an implantable heart device called a pacemaker. Pacemakers are small devices that are implanted under the skin, most often below your collarbone on the left or right side of your chest...
High defects, also called sinus venosus ASDs. These defects are located high in the septum and are associated with an abnormality of the right upper pulmonary vein. Central defects, also called secundum type ASDs. This is a persistence of the naturally occurring hole in the heart while the bab...