Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS May 31, 1998 Expected B Maturity 8/16/04 Blended Coupon 6.4868% Excess Protection Level 3 Month Average 5.57% May, 1998 4.97% April, 1998 5.90% March, 1998 5.83% Cash Yield17.95% Investor Charge Offs 5.01% Base Rate 7.96% Over 35 Day Delinquency 5.17% Seller's Interest13.80% Total Payment Rate13.68% Total Principal Balance$35,599,996,121.04 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,911,601,602.55