Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS December 31, 1997 Expected B Maturity 9/15/99 Blended Coupon 6.3240% Excess Protection Level 3 Month Average 5.09% December, 1997 5.08% November, 1997 4.85% October, 1997 5.34% Cash Yield 18.25% Investor Charge Offs 4.64% Base Rate 8.53% Over 35 Day Delinquency 4.81% Seller's Interest 16.15% Total Payment Rate 13.29% Total Principal Balance $ 34,934,847,924.76 Investor Participation Amount $ 760,000,000.00 Seller Participation Amount $ 5,643,513,406.27