Intermittent drip

Intermittent drip or infusion 300 to 400 ml given 3 to 6 hours over 30 to 60 minutes by gravity drip or infusion pump. This is an inexpensive way to administer enteral feedings. 

Administer by slow IV drip infusion only, either as continuous or intermittent infusion. Do not use equipment containing aluminum (eg, needles, cannulae). If used with a primary IV fluid system, discontinue the primary solution during infusion. Do not give by direct IV bolus injection because of the low pH (0.5 to 2) of the reconstituted product. The drug must be further diluted and neutralized for infusion. Do not introduce additives into the solution. 

Intravenous soluble (neutral) insulin is used in diabetic ketoacidosis. It may be given intermittently (i.v. or i.m.) but continous infusion is preferred. If the insulin is infused by drip in physiological saline (40 units/I) as much as 60-80% can be lost due to binding to the fluid container and tubing. It is necessary to take this into account in dosing. Polygeline (Haemaccel) may be added to bind the insulin in competition with the apparatus and so carry it into the body. 

Oil/grease used to lubricate the chain of bucket elevators has intermittently fallen on to the product rendering it a waste. By the use of a lubricant that does not drip, this waste could be eliminated. 

The most common route for both short-term and long-term EN access is directly into the stomach. The method of delivery may be either continuously via an infusion pump, intermittently via a pump or gravity drip, or bolus administration. 

Methohexital (1 mg/kg in 1% solution given at a rate of 1 mL/5 seconds) is used for induction of anesthesia lasting 5 to 7 minutes. Maintenance of anesthesia may be accomplished by intermittent injections of 1% solution or by continuous IV drip of a 0.2% solution. Intermittent injections of about 20 to 40 mg (2 to 4 ml of a 1% solution) may be given as required, usually every 4 to 7 minutes. For continuous drip, the average rate of administration is about 3 mL of a 0.2% solution/min (1 drop/second). Methohexital should not be mixed in the same syringe or administered simultaneously during IV infusion through the same needle with acid solutions, such as atropine sulfate, metocurine iodide, and succinylcholine chloride. 

Riickert et al. (1983) note that rainwater dripping from galvanized gutters had pH values of 6.0-6.5, whereas water from bituminous roof claddings had pH values of 5.5-6.5. These authors discuss the influences of intermittent attack and the humidity of the air. 

Nutrient Solution Culture (NSC) Methods. Several forms of NSC are utilized to feed plants. Continuous-flow NSC involves nutrient solutions being poured into a trough and constantly moving through roots. Nutrient solutions contact roots less frequently in intermittent-flow NSC. The drip NSC technique delivers nutrient solutions through tubing and emitters that dispense water on the substrate near roots. Some drip systems recycle nutrient solution. The wick system utilizes strings that extend from substrates to a reservoir filled with nutrient solution. 

---