While heart rates may vary by patient, especially based upon gender and age, some individuals experience sinus tachycardia or persistent fast sinus rates with no symptoms; these individuals would not necessarily be considered to have the syndrome of IST. Various explanations for IST have been considered but a definitive common mechanism is not yet known; the true aetiology may be multifactorial. A thorough evaluation of secondary causes of tachycardia is required in the work-up of all cases and if found, must be treated before a diagnosis of IST can be made.
Bradycardia is a slower than normal heart rate. The hearts of adults at rest usually beat between 60 and times a minute. If you have bradycardia brad-e-KAHR-dee-uhyour heart beats fewer than 60 times a minute.
Arrhythmias are abnormal heartbeats usually caused by an electrical "short circuit" in the heart. The heart normally beats in a consistent pattern, but an arrhythmia can make it beat too slowly, too quickly, or irregularly. This can cause the heart to pump inconsistently, leading to symptoms like fatigue, dizziness, and chest pain.
An electrocardiogram EKG does not show any abnormalities as IST arises within the sinus node where the normal heart rhythm is generated. It is a relatively new disorder first recognized in the late s that is underappreciated by many in the medical profession and many doctors consider it to be a psychological condition. Individuals with this condition can find themselves increasingly disabled and experiencing high levels of anxiety. IST is not a life threatening condition but it can be very debilitating.
Pediatric cardiac issues can make even the most experienced EM MD have axillary perspiration more than normal. We are likely more comfortable with arryhthmias than structural heart disease. SVT can even be fun to manage.
Bradycardia is the medical term for a heart rate that is slower than is considered normal. However, many possibly a majority of healthy people have a resting heart rate below So having bradycardia is not necessarily a bad thing, or even an abnormal thing.
Abnormal heartbeats, or arrhythmias, in adults can also affect children. In such cases, special considerations may help identify symptoms and treat the condition. Your doctor may ask your children questions if they have a hard time describing symptoms.
Usually, a heart beats between 60 and 80 times per minute, but everyone has their own normal heartbeat rhythm. Some hearts beat faster or more slowly than others. When you are diagnosed with arrhythmia, it is an abnormal heart rhythm for you, but not necessarily for someone else.
The SA node is a cluster of specialized cells, located in the right atrium. The SA node produces the electrical impulses that set the rate and rhythm of your heartbeat. The impulse spreads through the walls of the right and left atria, causing them to contract, forcing blood into the ventricles.