Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS December 31, 1998 Expected B Maturity 8/16/04 Blended Coupon 6.4705% Excess Protection Level 3 Month Average 5.89% December, 1998 5.87% November, 1998 5.74% October, 1998 6.06% Cash Yield18.72% Investor Charge Offs 4.98% Base Rate 7.87% Over 35 Day Delinquency 4.96% Seller's Interest10.83% Total Payment Rate13.62% Total Principal Balance$41,270,703,888.09 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,468,784,369.60