WHO technical specifications Cryosurgical equipment for the treatment of precancerous cervical lesions and prevention of cervical cancer

Abstract

Cervical cancer is a serious and growing global health issue. In 2008, there were approximately 274 000 deaths from the disease, about 88% of which occurred in developing countries. Although it affects women worldwide, cervical cancer mortality is highest in low-resource settings. Cryotherapy, also known as cryosurgery, has been widely accepted as a practical and effective method of treating precancerous cervical lesions. It is appropriate for use in lowresource settings because it is effective, has limited side-effects, does not require electricity, is inexpensive compared to other treatment options, and is technically simple to implement. This document seeks to assist programme managers, purchasing managers, and other interested parties with the procurement, management and effective use of cryosurgical equipment to treat precancerous cervical lesions as part of a comprehensive cervical cancer prevention programme. It provides an overview of the procurement and performance issues associated with some cryosurgical devices, gas supplies and gas cylinders, and necessary connectors. The document offers technical specifications for purchasers, including the design and performance recommendations necessary to ensure the safety and efficacy of cryosurgical equipment, issues related to the gases used by the equipment, and guidance on how to procure both the equipment and the gases. Annexes provide additional useful information.