Clinic6 freezpen Benutzerhandbuch Seite 12

tissue surrounding the lesion. This can cause blisters
and pain.
Condensation of humidity in the air on the frozen
working area during the procedure may create an ice
layer on top of the lesion. This 'igloo' will prevent the
liquid cryogen from working effectively (at -89°C/-
128°F): it should be removed with the applicator tip
by gently wiping the ice.
Protect the area from blown ice shards, although
they are relatively harmless.
After thawing, the tissue turns reddish and appears
inflamed due to interstitial bleeding. Some edema
and/or blistering may occur and cause discomfort for
some hours.
Always protect this new-grown skin by using a
sunblock for 8 to 20 days after the scab has come off.
Duration/depth of the treatment
Hold the tip of the applicator as close as possible
to the lesion. In all literature, the rapid drop
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of temperature (thermal shock) is described
as a critical criterion. However, always take into
account the part of the body being treated.
In some parts, skin is thinner and requires more
caution. A typical freeze on viral infections may last
from 5 to 10 seconds for a small flat wart,
and up to 45 seconds for a full-thickness plantar
wart. In general, most lesions take about 2 to 30
seconds. The duration of the treatment will depend
on the surface area and the thickness of the tissue.
Thickness must be estimated by the operator based
on clinical experience.
After the first freezing cycle, the tissue should
be allowed to thaw for about 30 seconds, followed
by a second freezing. Please note that in the second
cycle the tissue will freeze faster.
This 'freeze-thaw-freeze' technique is recorded
in most literature on cryotherapy and gives
the best results.
A follow-up visit is recommended to confirm
that all the pathological tissue has disappeared
or that a follow-up treatment is necessary.