In this section, we take a look at
gastrointestinal disease of the stomach
and the duodenum.
We begin by looking
at GI bleeding.
Forms of GI bleeding
and what it means to you clinically.
If there’s Hematemesis,
well, if you’re thinking
about vomiting up a blood
and usually it indicates bleeding
proximal to the ligament of Treitz.
The ligament of Treitz is
dividing your GI system
into a proximal
and a distal portion.
And it is a line between
the duodenum and the jejunum.
So technically speaking,
that in which you find bleeding
that's taking place proximal to the Treitz
may result to hematemesis.
Melena to you should mean
that there’s enough time of the
blood to then set into the feces.
And so therefore by the time
the feces has then evacuated,
the stools then appears
to be black and tarry.
Therefore, for the
most part though,
Melena should indicate
upper GI bleeding.
But technically speaking, it can
occur anywhere from the GI tract.
However, if it is a Hematochezia
then this should be bright red.
And this to you should indicate
that the bleeding is quite distal
more so in the colon.
Give yourself an example
such as hemorrhoids
in which sometimes you have
bleeding that takes place
and coats the stool
as being frank or bright red.
Or things of the colon cancer type
especially right sided colorectal cancer
in which here also the stool might
then appears being bright red.