Exhibit 99.33 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-N KEY PERFORMANCE FACTORS June 30, 1998 Expected B Maturity 11/15/00 Blended Coupon 5.8008% Excess Protection Level 3 Month Average 5.25% June, 1998 4.76% May, 1998 4.97% April, 1998 6.00% Cash Yield 17.69% Investor Charge Offs 5.10% Base Rate 7.83% Over 35 Day Delinquency 5.06% Seller's Interest 12.61% Total Payment Rate 13.35% Total Principal Balance $35,974,950,178.51 Investor Participation Amount $900,000,000.00 Seller Participation Amount $4,536,555,660.02