Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS December 31, 1997 Expected B Maturity 8/16/04 Blended Coupon 6.5380% Excess Protection Level 3 Month Average 5.22% December, 1997 5.25% November, 1997 4.97% October, 1997 5.44% Cash Yield18.25% Investor Charge Offs 4.64% Base Rate 8.36% Over 35 Day Delinquency 4.81% Seller's Interest16.15% Total Payment Rate13.29% Total Principal Balance$34,934,847,924.76 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,643,513,406.27