Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS July 31, 1998 Expected B Maturity 9/15/99 Blended Coupon 5.8961% Excess Protection Level 3 Month Average 4.87% July, 1998 5.12% June, 1998 4.66% May, 1998 4.84% Cash Yield 18.75% Investor Charge Offs 5.14% Base Rate 8.49% Over 35 Day Delinquency 4.90% Seller's Interest 15.22% Total Payment Rate 14.52% Total Principal Balance $ 37,740,921,726.81 Investor Participation Amount $ 760,000,000.00 Seller Participation Amount $ 5,743,527,208.32