Exhibit 99.19 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS March 31, 2001 Expected B Maturity 6/17/02 Blended Coupon 6.4484% Excess Protection Level 3 Month Average 7.60% March, 2001 8.24% February, 2001 7.56% January, 2001 6.98% Cash Yield 20.67% Investor Charge Offs 4.83% Base Rate 7.59% Over 30 Day Delinquency 4.90% Seller's Interest 7.37% Total Payment Rate 14.60% Total Principal Balance $56,622,749,044.91 Investor Participation Amount $706,000,000.00 Seller Participation Amount $4,172,058,483.42