An episode of paroxysmal atrial tachycardia can occur in the complete absence of any heart disease or defect, and this condition is not usually dangerous. It can be very frightening, but itâs important to remember that unless other cardiac symptoms are present, there is usually no cause for alarm.reatment for this condition may differ depending on what has caused the heart arrhythmia and accompanying symptoms. In the case of multiple atrial tachycardia (MAT), for example, the underlying cause is often chronic obstructive pulmonary disease, congestive heart failure, or another cardiac condition.
Monument Valley weather averages. Check out the Monument Valley weather averages before you book your next holiday to Arizona. The warmest month in Monument Valley is July with an average maximum temperature of 34Â°C. The sunniest month is June with on average 12 hours of bright sunshine per day. The month with the least number of days with some rain is June with 3 days.
Even on the warmest days, Grand Canyon's night-time temperature usually goes below 60&degF. Freezing weather commonly occurs in any season but summer. Really cold temperatures, of 0&degF or lower, happen on three days in an average winter, and the thermometer never crawls above freezing on six days.o find out how often it rises over 60, 70 or 80 Â°F each month in Grand Canyon, scroll down farther. There are also monthly and yearly counts of days with cold weather. All the numbers are averages, based on climate data gathered from 1981 to 2010.