Candela AlexTriVantage, Руководство оператора

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B-2 Confidential 8501-00-1800, Revision 05
Candela Corporation AlexTriVantage Laser System
The appearance of a raised, white spot is the usual marker of a laser pulse delivered
using an energy density (fluence) at or above the therapeutic threshold. If a raised,
white spot fails to appear at an irradiated site, the energy density is most likely
subtherapeutic. The energy density may be increased at additional test sites, using
increments of 0.5 J/cm2, until a raised, white spot is noted.
Further, the occurrence of punctate (pinpoint) bleeding at irradiated sites can be a
marker of excessive energy density (always use universal precautions). If laser pulses
cause frequent punctate bleeding to appear at irradiated sites, decrease the energy
density, using increments of 0.5 J/cm2, until it no longer occurs.
2.
Return Visit - Confirming the Therapeutic Energy Level
Evaluate the patient response in approximately upon return visit.
If no clearance of the tattoo or pigmented lesion is observed, test an additional site with
a higher energy density, using an increment of 0.5 J/cm2 higher than the level
previously applied. If an adverse effect (e.g., hypo- or hyperpigmentation) is seen,
treatment should be adjusted or discontinued.
Treatment should be at the lowest energy density that produces clearance at the test
site(s). Inappropriate selection of an initial therapeutic energy density may result in
choosing a level that is higher than needed and could possible result in hypo- or
hyperpigmentation or scarring.
Treatment
Tattoos
The laser exposure dosage applied to treat tattoos may be in the range of 3.5 to 10.0 J/cm2.
Clinical evidence to date suggests the majority of tattoos are effectively treated in the range
of 6.0 - 8.0 J/cm2. Clinical effects of fluences higher than 12.0 J/cm2 are not yet known.
Therefore, it is not recommended to use fluences over 12.0 J/cm2.
If more than one treatment is needed due to incomplete clearance, the physician should use
the lowest energy density producing clearance or lightening of the tattoo at the time of each
subsequent treatment. Different pigmented areas within tattoos may have different optimal
therapeutic energy levels, therefore the fluence level should be adjusted appropriately to the
area being treated. When treating large tattoos, a series of treatment sessions may be used
rather than treating the entire tattoo in one session. However, most patients prefer treatment
of the entire tattoo at each session and tolerate the treatment well.
Note: Enter any changes in the treatment energy level in the patient's medical record.