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Original Article
2003:69:1;10-11
PMID: 17642813

Installation of solarium - 2000 for phototherapy

Anuarag Tiwari, CR Srinivas, Mohammed Musthafa, Reena Rai, P Surendran
 Department of Dermatology, PSG Hospital, Peelamedu, Coimbatore - 641 004, Tamil Nadu, India

Correspondence Address:
C R Srinivas
Department of Dermatology, PSG Hospital, Peelamedu, Coimbatore - 641 004, Tamil Nadu
India
How to cite this article:
Tiwari A, Srinivas C R, Musthafa M, Rai R, Surendran P. Installation of solarium - 2000 for phototherapy. Indian J Dermatol Venereol Leprol 2003;69:10-11
Copyright: (C)2003 Indian Journal of Dermatology, Venereology, and Leprology

Abstract

Sunlight is the cheapest and most easily available source of ultraviolet light for phototherapy. The disadvantage of using sunlight as the source of ultraviolet light includes its variation with time , place and season, lack of privacy, and atmospheric conditions. To ensure correct dose of UV light in spite of variation in irradiation from the sunlight,we used a PMA2100 meter [Figure:2] and 2110 UVA detector ( Solar light Co, Philadelphia). Privacy for the patients was achieved by erecting a solarium and incidental UVB radiation was cut off by using window glass as the roof of the solarium. We recommend the solarium as a less expensive alternative to artificial phototherapy units, especially in places where there is plenty of sunlight.
Keywords: Solarium, PUVASOL, Phototherapy

Introduction

Phototherapy is effective in the treatment of many skin disorders. Ultraviolet for phototherapy can be delivered from sunlight or from artificial UV chambers. Sunlight is economical and freely available but varies with time and place, altitude, atmospheric conditions[1] and is difficult to administer if proper place is not available. We have constructed a solarium, which overcomes many of the inherent disadvantages of using sunlight as a source of UV light for phototherapy.

Materials and Methods

Installation of solarium [Figure - 1]

A uniformly illuminated site on the roof top with access to water and electricity was selected. A two room structure 101 X 111 X 81611 with a common wall separating the two rooms was erected. The height of the front wall was 7′ to promote drainage of rainwater and to clean the roof. A gap of 1[1] was left along the three walls at the top for ventilation. The roof was made with 5mm thick window glass. A main frame of 21 x 21x ¼11 MS angle was made. Intermediate support of 1 "x11x′/4" Tangle was added along the length to lend additional support of the glass. Multiple glass sheets 31911 x 31311 were used.

A fiberglass bath tub of 61611 x 21 size was installed in each room. The bath tub was scored for 25L, 50L, 80L and 100L. At one side of either room a platform 10′ x 3′ was installed and ceramic tiles were placed to prevent overheating by sunlight. The floor was slightly inclined to facilitate water drainage. Other facilities included a shower for bathing after phototherapy, a full - length mirror, cloth hanger and a geyser to provide warm water.

Mesurement and monitoring of UVA

A PMA 2100 meter with UVA detector PMA 2100 (solar light, Philadelphia) was used. The instrument with data logging and integration capabilities is programmed to read UVA at m.w/cm2. The meter can be programmed for a predetermined dose of UVA irrespective of the irradiance from the source and this enabled us to deliver the required dose at any given time. An in-built alarm system would single the completion of the treatment.

Bath water psoralen delivery is administered by standard protocol[2] following which the patient is exposed to UV rays from sunlight for PUVASOL.

Discussion

The solarium offers the following advantages over standard PUVASOL. The meters enable the accurate exposure to UV light. The glass rooftop cuts off the UVB not needed for PUVASOL. The bathtub permits bath water delivery of psoralen, and the enclosed structure offers privacy especially for the female patients and the male increase in the exposure time by the PMA meter.

The disadvantages of the solarium are as follows. The patient has to travel to the hospital for the treatment, whereas PUVASOL without solarium can be administered at any suitable place. The solarium needs regular housekeeping that includes cleaning the glass roof. It was observec that the deposition of fine layer of dust prolongs the exposure time and the time taken fo administration of phototherapy in a solarium is relatively longer than using artificial units.

References
1.
Srinivas CR, Devadiga R, Shenoy SD, et al. Exposure time to sunligF for PUVASOL. Indian J Dermatol Venereol Leprol 1989;55:373-374.
[Google Scholar]
2.
Sridhar K, Srinivas CR, Shenoy SD. PUVA therapy fo psoriasis; Comparison of oral and bath water delivery of 8 MOP Indian J Dermatol Venereal Leprol 1992;58:252-254.
[Google Scholar]
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