Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS March 31, 1999 Expected B Maturity 8/16/04 Blended Coupon 6.3804% Excess Protection Level 3 Month Average 6.23% March, 1999 6.78% February, 1999 6.11% January, 1999 5.81% Cash Yield19.18% Investor Charge Offs 5.12% Base Rate 7.28% Over 35 Day Delinquency 4.94% Seller's Interest 6.34% Total Payment Rate14.77% Total Principal Balance$40,628,355,078.94 Investor Participation Amount$750,000,000.00 Seller Participation Amount$2,576,435,560.45