The treatment
outcome can be reached by a single or double session, but it depends on the
severity of the fungal infection. The outcome, the growth of new clear nail
structures is therefore not immediately visible. Nevertheless, in about 8 weeks
after the initial treatment the first new formed clear nail structures are
discernible. If this is not the case, an additional treatment could be implemented.
A 3rd treatment (ca. 8 weeks after the 2nd treatment) could be necessary if the
fungal infection is very definitive. The ultimate result should be visible in 9
month till one year.
Pre-treatment
tests
Onychomycosis could be bred by different pathogens like e.g. dermatophytes, yeasts
or mildew. The pathogen should be microbiological analyzed beforeeach laser
treatment. The treating physician should subsequently classify the results in
respect to its pathogen relevance. At the presence of an hyper-keratotic
infections the infected nail stuff should be removed mechanically – it is not
necessary if an atropic infection is present. Projecting infected nails or
applied nail polish has to be removed in any case.
Treatment parameter
The duration of the treatment depends on
the size of the toenails, the laser settings and the speed of the movement. The
laser beam should continuously (ca. 2 mm/s) guided over the nail bed, so that
the complete nail (nail plate, nail wall and eponychium) is repeatedly
irradiated reticular or spiral-shaped.
Due to the applied total energy there has
to be a notable warming perceptible. The treatment could be temporary (about 5
seconds) paused, if the patient feels a heating pain before the necessary total
energy is reached. After each treated nail the automatic pulse countershould be
reset by a singular touch.
After the treatment, there will be a
lingering sensation of heat below the nail.
This sensation will dissipate within 1 - 2
hours.
Post
treatment care
The advantage of the laser treatment is –
when correctly applied – it has no side effects. To avoid an infection of the
proximate nails the patient can use an antifungal cream.
Methods
in case of unwanted effects
The application of laser radiation can
cause a burning of the tissue, which results in necrosis. Measures to treat
burns have to be realized.
Second, the laser radiation causes
haemostasis and the tissue gets coagulated. The amount of irreversible damaged
tissue depends on the time and extend of the coagulation. Coagulated tissue is
not harmful and does normally not cause any problems. In case of overheating of
temperature-sensitive areas (nail wall) intensive cooling is recommended. If
the surgeon applies too much energy at the edge of the treatment area (nail
wall) it is comparable to burn wounds. The following clinical procedures should
follow the guidelines.
Treatment
related issues
Discomfort from the heating which is
generated by the laser may occur. To avoid this, the user should avoid too long
application times. If possible, cooling can reduce patients discomfort after
the treatment. All personal, including the patient, have to wear eye protection
goggles; this may lead to decreased vision regarding contrast and color by the
personal and surgeon.
In case of any eye injury due to disregard of
the eye protection by safetygoggles, an ophthalmologist has to be consulted.
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