Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS July 31, 1998 Expected B Maturity 8/16/04 Blended Coupon 6.4879% Excess Protection Level 3 Month Average 4.98% July, 1998 5.26% June, 1998 4.73% May, 1998 4.97% Cash Yield18.75% Investor Charge Offs 5.14% Base Rate 8.35% Over 35 Day Delinquency 4.90% Seller's Interest15.22% Total Payment Rate14.52% Total Principal Balance$37,740,921,726.81 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,743,527,208.32