Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS August 31, 1998 Expected B Maturity 8/16/04 Blended Coupon 6.4838% Excess Protection Level 3 Month Average 5.46% August, 1998 6.37% July, 1998 5.26% June, 1998 4.73% Cash Yield19.08% Investor Charge Offs 5.09% Base Rate 7.62% Over 35 Day Delinquency 5.00% Seller's Interest11.64% Total Payment Rate14.21% Total Principal Balance$37,775,682,964.86 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,395,888,446.37