The paper presents several of the authors experiences as a liaison psychiatrist on coronary care units. The psychiatrists main liaison role is in assisting with patient education and rehabilitation efforts. Examples are given of a patient education program and reasons for systematic evaluations for such programs. The psychiatrist also can aid in patient rehabilitation efforts carried out in the outpatient clinic. Results are given from an experimental program of group therapy as an adjunct to the treatment of post-myocardial infarction patients. Finally, two case histories are briefly presented which exemplify subjects serum uric acid and serum cholesterol variability associated with psychological stresses encountered during their hospitalizations following a myocardial infarction.