Exhibit 99.17 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-E KEY PERFORMANCE FACTORS April 30, 2001 Expected B Maturity 4/15/02 Blended Coupon 4.9039% Excess Protection Level 3 Month Average 7.70% April, 2001 7.87% March, 2001 7.75% February, 2001 7.47% Cash Yield 19.61% Investor Charge Offs 4.98% Base Rate 6.77% Over 30 Day Delinquency 4.89% Seller's Interest 9.33% Total Payment Rate 13.70% Total Principal Balance $58,171,313,434.78 Investor Participation Amount $750,000,000.00 Seller Participation Amount $5,425,622,873.29