Exhibit 99.26 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS March 31, 1998 Expected B Maturity 6/17/02 Blended Coupon 6.5237% Excess Protection Level 3 Month Average 5.17% March, 1998 5.87% February, 1998 4.74% January, 1998 4.92% Cash Yield 18.54% Investor Charge Offs 4.85% Base Rate 7.82% Over 35 Day Delinquency 5.06% Seller's Interest 11.41% Total Payment Rate 13.80% Total Principal Balance $33,909,306,783.29 Investor Participation Amount $706,000,000.00 Seller Participation Amount $3,867,972,264.80