St. Helens Chronicle. August 18 at 7:00pm Â·. I would suggest the City of St. Helens contact Boise, ask for at least one-half the cost of this cleanup of this PP and, if they do not agree, the City of St. Helens should bring suit against Boise for knowingly polluting and contaminating our environment.
Arrhythmias are characterized by their site of origin:  the atria or the ventricles. Supraventricular arrhythmias occur in the upper areas of the heart and are less serious than ventricular arrhythmias. Ventricular fibrillation is the most serious arrhythmia and is fatal unless medical help is immediate.
Paroxysmal atrial tachycardia is a type of arrhythmia (irregular heartbeat). Paroxysmal means that the episode of arrhythmia begins and ends abruptly. Atrial means that arrhythmia starts in the atria or upper chambers of your heart. Tachycardia means that the heart is beating abnormally fast. Paroxysmal atrial tachycardia (PAT) is also known as paroxysmal supraventricular tachycardia (PSVT). Other types of tachycardia that start in the atria include atrial fibrillation, atrial flutter, and Wolff-Parkinson-White syndrome. PAT can cause an adultâs heart rate to increase from between 60 and 100 beats per minute to between 130 and 230 beats per minute.