Table 2

Studies analysing equipment and treatment fields for the presence of HPV DNA

Study noAuthor/yearStudy designSample sizeFindings
1Ferenczy 199042 Treatment fields of patients undergoing CO2 laser ablation of genital warts or CIN lesions were analysed for HPV DNA using a dot blot hybridisation technique.43 patientsHPV DNA detected in 34/43 tissue samples and 7/43 laser margins.
2Bergbrant 199443 Surveillance petri dishes placed at a distance of 1 m and 2 m from the treatment field were analysed for the presence of HPV DNA using PCR following multilayer CO2 laser ablation or electrocoagulation of genital warts.15 surveillance petri dishesHPV DNA was detected in 2/15 surveillance petri dishes.
3Weyandt 201138 Surveillance petri dishes placed at a distance of 1 m and 2 m from the treatment field were analysed for the presence of HPV DNA using PCR following multilayer APC or CO2 laser ablation of genital warts.66 surveillance petri dishesHPV DNA corresponding to patient HPV types was detected in 0/66 of the surveillance petri dishes.
4Dodhia 201844 KTP laser fibres were analysed for the presence of HPV DNA using PCR following KTP laser ablation of laryngeal papillomas.12 patientsHPV DNA was detected in 0/12 KTP laser fibres.
  • APC, argon plasma coagulation; CIN, cervical intraepithelial neoplasia; CO2, carbon dioxide; HPV, human papillomavirus; KTP, potassium titanyl phosphate; LEEP, loop electrosurgical excision procedure; YAG, yttrium-aluminium-garnet.