Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS July 31, 1997 Expected B Maturity 9/15/99 Blended Coupon 5.8981% Excess Protection Level 3 Month Average 4.61% July, 1997 4.52% June, 1997 4.87% May, 1997 4.46% Cash Yield 17.53% Investor Charge Offs 4.92% Base Rate 8.09% Over 35 Day Delinquency 4.47% Seller's Interest 18.18% Total Payment Rate 14.22% Total Principal Balance $ 30,179,392,749.44 Investor Participation Amount $ 760,000,000.00 Seller Participation Amount $ 5,486,155,230.95