Proportion of patients with ventricular tachycardia (VT), ventricular fibrillation (VF), or symptomatic supraventricular tachycardia (SVT) during the 24-week Follow-up Period [ Time Frame: end of treatment week 24 ] [ Designated as safety issue: No ]
Quicksand is a colloid hydrogel consisting of fine granular material (such as sand, silt or clay), and water. Quicksand forms in saturated loose sand when the sand is suddenly agitated. When water in the sand cannot escape, it creates a liquefied soil that loses strength and cannot support weight. Quicksand can form in standing water or in upwards flowing water (as from an artesian spring).
Fortunately, this kind of quicksand is rarely dangerous. The action of the waves only creates a quicksand patch a few inches deep, not enough to trap even a child. Quicksand that forms in a patch more that a few inches deep, however, can be dangerous.eing sucked into quicksand is a staple of many 'B' movies, but is this phenomenon of nature really as dangerous as it is portrayed? Jack Pickett and his friend Fred Stahl, both college students, decided to spend the day looking for parasitic plants in the swampland south of Florida's Lake Okeechobee.