OPINION
LESLIE, Judge.Reome appeals the August 4, 1985 amended findings, conclusions and order of the supreme court appeal panel, affirming the Commissioner’s denial of Reome’s petition for discharge from his commitment as mentally ill and dangerous. He argues the statutory discharge criteria are unconstitutional. We affirm the panel’s decision.
FACTS
Reome was committed to the Minnesota Security Hospital as a mentally ill and dangerous person on November 5, 1982. His 1983 petition for discharge from commit*210ment was denied by the Commissioner, on recommendation of the special review board. The Commissioner’s decision was appealed to the supreme court appeal panel. The panel found Reome was not mentally ill and ordered him discharged.
On appeal to this court, we affirmed, finding the discharge criteria of Minn.Stat. § 258B.18, subd. 15 (1982) must be read in conjunction with the definition of a person mentally ill and dangerous to the public. See Minn.Stat. § 253B.02, subd. 17 (Supp. 1983), Reome v. Levine, 350 N.W.2d 428 (Minn.Ct.App.1984) (Reome I). The supreme court granted a petition for further review and remanded the matter to us for reconsideration in light of its opinion in Enebak v. Noot, 353 N.W.2d 544 (Minn.1984), issued after our opinion in Reome I. Reome v. Levine, 361 N.W.2d 29 (Minn.1985).
On remand, we vacated Reome I and instructed the appeal panel to make specific findings on the discharge criteria set forth in the statute. Reome v. Levine, 363 N.W.2d 107 (Minn.Ct.App.1985, pet. for rev. denied, April 18, 1985) (Reome II).
In his petition for further review of Reome II, appellant for the first time argued the statute is unconstitutional. The supreme court denied review and the appeal panel reconsidered the matter. By amended findings, conclusions and order on August 4, 1985, the panel again found Reome is not mentally ill, but has an antisocial personality, that he “is capable of making an acceptable adjustment to open society,” but “is apt to be involved in criminal behavior in the future and is dangerous to the public,” and that he is not in need of further inpatient treatment and supervision.
The appeal panel concluded Reome had not satisfied the statutory criteria and was not entitled to discharge. In an unincorporated memorandum, the panel noted Reome had not previously contended Minn.Stat. § 253B.18, subd. 15 is unconstitutional. The panel further noted the matter had been remanded solely for factual findings and did not address the constitutional issue, but urged this court to consider the claim. On appeal, Reome does not dispute the panel’s findings, but argues the statute is unconstitutional.
ISSUES
1. Is appellant’s challenge to the constitutionality of Minn.Stat. § 253B.18, subd. 15 properly before this court?
2. Is the statute unconstitutional on its face as an improper delegation lacking adequate procedural safeguards?
3. Does the statute deprive appellant of due process or equal protection, thereby rendering it unconstitutional as applied?
ANALYSIS
I.
Appellant first argued the statute governing discharge is unconstitutional in his petition for further review of Reome II. “[I]f the constitutionality of [a statute] were at no time challenged or litigated in the trial court, appellant would generally be barred from challenging it here.” McGuire v. C & L Restaurant, Inc., 346 N.W.2d 605, 610 (Minn.1984). An exception to this general rule may be made when the appellant has previously raised the constitutional issue below and a ruling can be inferred from the trial court’s action. Id. That is not the case here.
However, if this court dismisses this appeal for failure to preserve the issue, Reome could presumably raise the constitutional issues by again petitioning for discharge from his commitment. “Moreover, the parties have had adequate time to brief constitutional issues and the interests of justice require consideration of such issues by this court.” Id.
II.
A patient committed as mentally ill and dangerous
shall not be discharged unless it appears to the satisfaction of the commissioner, after a hearing and a favorable recommendation by a majority of the special *211review board, that the patient is capable of making an acceptable adjustment to open society, is no longer dangerous to the public, and is no longer in need of inpatient treatment and supervision.
Minn.Stat. § 253B.18, subd. 15. (The 1982 statute, which governs the petition in this case is identical to the 1984 provision.) The board and Commissioner must also consider “whether specific conditions exist to provide a reasonable degree of protection to the public and to assist the patient in adjusting to the community. If the conditions do not exist, the discharge shall not be granted.” Id.
Reome argues the statute impermis-sibly delegates legislative power to the special review board without adequate procedural safeguards, since the Commissioner’s decision to discharge is dependent upon the requisite showing and a favorable recommendation from the board. This argument fails for two reasons.
First, legislative delegation is not per se impermissible. See Minnesota Energy & Economic Dev. Authority v. Printy, 351 N.W.2d 319, 351-52 (Minn.1984). More importantly, the decisions made by the board and Commissioner in this case are quasi-judicial, and not legislative. Criteria of general application are not formulated and only the status of a single patient is determined. The board makes a recommendation to the Commissioner, who makes the ultimate decision.
Second, the statutory scheme adequately protects the due process rights of patients who petition for discharge. If the special review board issued a recommendation without findings or a record, so the basis of its decision was not ascertainable, the process could deprive patients of due process. See Hunter v. Zenith Dredge Co.. 220 Minn. 318, 19 N.W.2d 795 (1945). In fact, the board’s hearings are open to counsel, and numerous witnesses attended the hearing on Reome’s petition. The board issued four pages of findings and memorandum explaining the basis for its recommendation that Reome not be discharged.
Additional protection is afforded the patient by the right of appeal from the Commissioner’s decision to the three-judge supreme court appeal panel for consideration de novo. Minn.Stat. § 253B.19, subd. 2. Testimony and evidence are then received on the record and the decision may be further appealed to this court. Id., subd. 5.
The United States Supreme Court has considered .the due process implications of the discharge process for dangerous committed persons. See Jones v. United States, 463 U.S. 354, 103 S.Ct. 3043, 77 L.Ed.2d 694 (1983). The Minnesota Supreme Court, applying Jones, has already concluded the Minnesota statutory discharge process “refleet[s] the constitutional standard.” Enebak v. Noot, 353 N.W.2d 544, 547 (Minn.1984).1
III.
Reome also argues the discharge criteria are unconstitutional as applied. He does not dispute the findings made by the appeal panel, but argues he must be released since his dangerousness does not result from mental illness. That issue has already been decided by the supreme court in Enebak. Reome continues to rely upon Johnson v. Noot, 323 N.W.2d 724 (Minn.1982), urging this court to consider the definition of a mentally ill and dangerous person in conjunction with the discharge criteria, even though the supreme court explicitly rejected that analysis in Enebak and remanded for reconsideration our decision in Reome I which adopted the Johnson analysis. Enebak v. Noot, 353 N.W.2d 544 (Minn.1984), Reome v. Levine, 361 N.W.2d 29 (Minn.1985).
*212It is clear that Reome is dangerous to the public. The existence of dangerousness is the essential element justifying confinement and denial of Reome’s petition for discharge. See O’Connor v. Donaldson, 422 U.S. 563, 575, 95 S.Ct. 2486, 2493, 45 L.Ed.2d 396 (1975); Enebak, 353 N.W.2d at 547. “The determining question should be: If not institutionalized, will they be a danger to society?” Lausche v. Commissioner of Public Welfare, 302 Minn. 65, 69, 225 N.W.2d 366, 368 (1974).
DECISION
Minn.Stat. § 253B.18, subd. 15 is not unconstitutional.
Affirmed.
NIERENGARTEN, J., dissents.. Enebak involved the provisional discharge request of a psychopathic personality. Persons committed as psychopathic personalities are subject to the same statutory provisions as those committed as mentally ill and dangerous. Minn.Stat. § 253B.02, subd. 17 (1984). Although the factors to be considered before provisional discharge differ slightly, the decision process on a provisional discharge provision is identical to that of a petition for full discharge. See § 253B.18, subds. 7 and 15.