Estimates of the Risk of Endemic Transmission of Hepatitis B Virus and Human Immunodeficiency Virus to Patients by the Percutaneous Route During Invasive Surgical and Dental Procedures (Draft)

9

DRAFT

potIuK~ er te o~~i oe ue needles, which may be
1ess likely to resul x~bJ~ood tzrars f er-and transmission of
infection than hollow bqre needles, In dentistry,. a different
0r*portioni of injurie a ede' hollow bore needles3, becas
of -the f req':ent, use:*eof such needlas to administer anesthetic in,
confined vtid poorly visualizesd- sp es. other factors may be
important as well. Pasoage, of a~el through glove material,
rngt ~blyreduce the zts k Io "i'4ection transission i: bon
-. he neadle exteriorispri *ovdbthmaeal Te
pr~~blity Of Hiv tanmisin ecutaneous exposure,
I "A t. hb lower if the spur( *-per 4 ti case, the HCW) has
M'_,tOMatiC HIVy infec-tion rather: a, AIDSf diae to increasesin
the ttr~ I in blood"wri th pr *,Sion of HIV inf ection- and
d,~~ Also, the prok:abillit': ta >iso mgtb
d e -r- eased f'or source-persons t a It J'tMtiviral drugs, if these
dr-vgs resualted in a decrease in "tit, r.of -circulating viru
sersitive to the drugs,
Fift-h,. the probabili'ty of pereu Uaijr a b nr4
foar su-rgeons anid dentists wiho 4i~rigic abnormalities
e~g. peipharaN neuropathy, d \nndrlyi*ng iHIV disease o
eIq, e rt h ydEO.':w7d e o

If N. t>k.' i ~s4~ e assumption that all of its
B, an4 1I) and the mlil
ovrin tierisk is cal1culated-are
t, V v t "a t e S &nd4oc ~ dnaeoinfected during
nP.!7 a a.O t npr m ts otltydone~iot a nt
t~.>lan ~L4e0donttael i n a-co,,nt-the
Pa. t o a -oe i notr*yer rslt n
1"Be:&vct e -tzn decluin.d

Othez" Risk, to PatientS
Risks of HIlY and I{BV I '1
occurring, in healthl"carZ
Them r i sks a r e pt 6se-Ag
between risks must be'
account whether a pat"I

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