Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS March 31, 1999 Expected B Maturity 9/15/99 Blended Coupon 5.1489% Excess Protection Level 3 Month Average 6.15% March, 1999 6.74% February, 1999 6.07% January, 1999 5.64% Cash Yield 19.18% Investor Charge Offs 5.12% Base Rate 7.32% Over 35 Day Delinquency 4.94% Seller's Interest 6.34% Total Payment Rate 14.77% Total Principal Balance $ 40,628,355,078.94 Investor Participation Amount $ 760,000,000.00 Seller Participation Amount $ 2,576,435,560.45