Suction evacuation is not done after 12 weeks of gestestion give reason
Answers
There are two methods of vacuum aspiration (also called suction aspiration):
Manual vacuum. This procedure can be used around 5 to 12 weeks after the last menstrual period (early first trimester). It involves the use of a specially designed syringe to apply suction. This method is not available everywhere. But it may be more available than machine aspiration in some geographic areas.
Machine vacuum. This procedure is a common method used in the first 5 to 12 weeks (first trimester) of pregnancy. Machine vacuum aspiration involves the use of a thin tube (cannula) that is attached by tubing to a bottle and a pump, which provides a gentle vacuum. The cannula is passed into the uterus, the pump is turned on, and the tissue is gently removed from the uterus.
Answer:
In refrigeration and air conditioning systems, the suction pressure' is the intake pressure generated by the system compressor while operating. The suction pressure, along with the suction temperature and the wet bulb temperature of the discharge air are used to determine the correct refrigerant charge in a system.