Exhibit 99.33 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-F KEY PERFORMANCE FACTORS April 30, 2000 Expected B Maturity 9/15/05 Blended Coupon 6.2785% Excess Protection Level 3 Month Average 5.80% April, 2000 5.52% March, 2000 5.84% February, 2000 6.04% Cash Yield18.11% Investor Charge Offs 4.70% Base Rate 7.89% Over 30 Day Delinquency 4.72% Seller's Interest10.74% Total Payment Rate13.82% Total Principal Balance$52,271,464,953.72 Investor Participation Amount$500,000,000.00 Seller Participation Amount$5,612,664,435.23