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Subject: Digestion Author: Jill [ Next Thread | Previous Thread | Next Message | Previous Message ] Date Posted: 17:12:30 07/12/01 Thu In mental health areas , bioscience quirks present in fewer cases than in general health work. My query may be blindingly obvious to others but has kept my colleagues and I talking for a while. Feeding via a naso gastric tube to provide total nutrition to a pt with longstanding history of binge/vomit and restrictive food intake. Our dilemma has been the length of time post feed before stomach has emptied ie - vomitting no longer possible? Argument was based on : 1 Liquid feed so mechanical digestion not required as much so would food move on to small intestine quicker? 2 Stomach not familiar with processing food so might act slower? 3 Does the rate of the feed affect the rate of stomach emptying? 4 Overall time frames for management plans to support pt. [ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

[> Subject: Re: Digestion- N/G feeding Author: Bronwyn [ Edit | View ] Date Posted: 14:02:52 07/26/01 Thu A very interesting scenario Jill sorry I've taken so long to respond. I couldn't put a time on 'the length of time post feed before stomach has emptied ie - vomitting no longer possible?' BUT your reasoning is good. 'Liquid feed so mechanical digestion not required as much so would food move on to small intestine quicker?' TRUE BUT remember even the smell of food can stimulate churning as can the presence of non foods such as coffee & alcohol. Question - what is stimulated to instigate churning? Once food is soft enough it will be able to spurt out via pyloric sphincter into duodenum so Liquid food would have an advantage re removal from stomach. Question - which hormone is directly involved in stomach emptying? >2 Stomach not familiar with processing food so might >act slower? NOT SURE ABOUT THIS - more like related to gastric damage that may exist. Usual stimulant pathways should still operate unless nerves supplying stomach are damaged. If gastric glands damaged then secretions of acid and hormones may be compromised. >3 Does the rate of the feed affect the rate of stomach >emptying? I WOULD SAY SO Because you are giving liquid it will almost pass straight through the sphincters so the faster it goes in the faster it enters duodenum If too fast could induce gas and fullness in small intestine. DOES ANYONE ELSE HAVE ANY COMMENTS? [ Post a Reply to This Message ]

[> [> Subject: Re: Digestion- N/G feeding Author: Jill [ Edit | View ] Date Posted: 22:03:34 08/17/01 Fri >Stomach churning is from autonomic nerve stimulation?Sensory pick up of sight and smell and sound of food can trigger the churning?. ( In my new job it seems for me to totally related to how quiet the house is I am visiting. To hear my patients over my rumbling tum I am having to start eating morning teas as well as the strangely regular breakfast. Still to deal with the exercise side....) 2 Enterogastrones - a collection fo hormones including CCK, VIP, secretin ,intestinal gastrin, and GIP work together to govern secretion of oeachother and the over muscle action of the stomach and its exit. A very interesting scenario Jill > > >sorry I've taken so long to respond. > >I couldn't put a time on 'the length of time post feed >before stomach has emptied ie - vomitting no longer >possible?' > >BUT >your reasoning is good. > >'Liquid feed so mechanical digestion not required as >much so would food move on to small intestine >quicker?' TRUE > >BUT remember even the smell of food can stimulate >churning as can the presence of non foods such as >coffee & alcohol. > >Question - what is stimulated to instigate churning? > >Once food is soft enough it will be able to spurt out >via pyloric sphincter into duodenum so Liquid food >would have an advantage re removal from stomach. > >Question - which hormone is directly involved in >stomach emptying? > > >>2 Stomach not familiar with processing food so might >>act slower? NOT SURE ABOUT THIS - more like related >to gastric damage that may exist. > >Usual stimulant pathways should still operate unless >nerves supplying stomach are damaged. If gastric >glands damaged then secretions of acid and hormones >may be compromised. > >>3 Does the rate of the feed affect the rate of stomach >>emptying? I WOULD SAY SO > >Because you are giving liquid it will almost pass >straight through the sphincters so the faster it goes >in the faster it enters duodenum >If too fast could induce gas and fullness in small >intestine. > >DOES ANYONE ELSE HAVE ANY COMMENTS? [ Post a Reply to This Message ]