
65-1
65.1 Introduction
Blood pressure measurements have been part of the basic clinical examination since the earliest days of
modern medicine. e origin of blood pressure is the pumping action of the heart, and its value depends
on th
e
re
lationship
be
tween
ca
rdiac
ou
tput
an
d
pe
ripheral
re
sistance
. e
refore,
bl
ood
pr
essure
is co
n-
sidered
as on
e
of th
e
mo
st
im
portant
ph
ysiological
va
riables
wi
th
wh
ich
to as
sess
ca
rdiovascular
he
mo-
dynamics
. Ve
nous
bl
ood
pr
essure
is de
termined
by va
scular
ton
e,
bl
ood
vo
lume,
ca
rdiac
ou
tput,
an
d
th
e
fo
rce
of co
ntraction
of th
e
ch
ambers
of th
e
ri
ght
sid
e
of th
e
he
art
. Si
nce
ve
nous
bl
ood
pr
essure
mu
st
be ob
tained ...