[Current models in health insurance and health care delivery].

Health care organizations similar to American HMOs have recently appeared in Switzerland. They elicit many reactions, both in the general public and among the medical profession. In contrast to traditional health insurance, HMOs organize and actively manage health care delivered to their members. This paper reviews the historical background of similar organizations in Europe and in the United States, and focuses in particular on the recent evolution and fragmentation of the concept of "managed care". Follows a discussion of the mechanisms and the side-effects of various tools used to manage care, both in managed care settings and by traditional health insurance plans. It appears that all of health care is managed, that all management tools have potential side effects, and that use of some management tools implies a redistribution of the respective roles of plan members, administrators, and physicians. The authors suggest that the complexity of health care management requires a more active implication of the health professions in that process.