Valuable conclusions on the effect of. loads and heating on concrete explosive spalling are shown in the paper. Keywrds: High-strength concrete, fire, explosive spalling, columns, heating rate, axial loads. INTRODUCTION. Concrete spalling under high temperatures is a major factor of reducing itâs fire resistance.
Abnormal heart rhythms are called arrhythmias. There are two kinds of cardioversion. Your doctor may give you one or more medicines to bring back your regular heartbeat. This is called pharmacologic (chemical) cardioversion. Doctors also restore regular rhythms by sending an electrical shock to the heart. This is called electrical cardioversion.
This test, often called an echo, shows your heart's movement. During this exam, your doctor places a wand on the surface of your chest. It sends ultrasound waves that show pictures of your heart's valves and chambers. Those images let your doctor look at how well your ticker is pumping. Your doctor may combine an echocardiogram with tests called Doppler ultrasound and color Doppler to check blood flow across your heart's valves. Ejection fraction (EF). It's a measure of how much blood is pumped out of your heart each time it beats.