Exhibit 99.33 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-A KEY PERFORMANCE FACTORS April 30, 1998 Expected B Maturity 3/17/2003 Blended Coupon 5.8256% Excess Protection Level 3 Month Average 4.23% April, 1998 4.23% March, 1998 N/A February, 1998 N/A Cash Yield18.78% Investor Charge Offs 4.70% Base Rate 9.85% Over 35 Day Delinquency 5.03% Seller's Interest14.63% Total Payment Rate14.61% Total Principal Balance$35,947,972,379.88 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,259,577,861.39 * For purposes of calculating the Base Rate and Excess Protection Level, a Coupon of 7.85% (43/360) was used. The Base Rate was calculated using a 43 day monthly period, 3/18/98-4/30/98.