public String loadExame() {
        Map parametros = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
        String idExa = parametros.get("idExame").toString();
        Integer id = Integer.parseInt(idExa);

        int i;
        for (i = 0; i < examesBean.size(); i++) {
            if (examesBean.get(i).getIdExame().equals(id)) {
                break;
            }
        }

        this.idExame = id;
        this.nome = examesBean.get(i).getNome();
        this.valor = examesBean.get(i).getValor();

        return "carrega";
    }