Rescuers' psychological competence, particularly their motivation, can improve the cardiopulmonary resuscitation outcomes. Data were collected using semistructured interviews with 24 cardiopulmonary resuscitation team members and analyzed through deductive content analysis based on Vroom's expectancy theory. Nine generic categories were developed: (i) estimation of the chance of survival; (ii) estimation of self-efficacy; (iii) looking for a sign of effectiveness; (iv) supportive organizational structure; (v) revival; (vi) acquisition of external incentives; (vii) individual drives; (viii) commitment to personal values; and (ix) avoiding undesirable social outcomes. When professional rescuers were called to perform cardiopulmonary resuscitation, they subjectively evaluated the patient's chance of survival, the likelihood of achieving of the desired outcome, and the ability to perform cardiopulmonary resuscitation interventions. If their evaluations were positive, and the consequences of cardiopulmonary resuscitation were considered favorable, they were strongly motivated to perform it. Beyond the scientific aspects, the motivation to perform cardiopulmonary resuscitation was influenced by intuitive, emotional, and spiritual aspects.