Exhibit 99.4 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-D KEY PERFORMANCE FACTORS September 30, 1997 Expected B Maturity 11/17/97 Blended Coupon 5.89399% Excess Protection Level 3 Month Average 4.58% September, 1997 4.77% August, 1997 4.47% July, 1997 4.49% Cash Yield 17.46% Investor Charge Offs 4.80% Base Rate 7.89% Over 35 Day Delinquency 4.84% Seller's Interest 12.31% Total Payment Rate 12.46% Total Principal Balance $ 30,549,822,447.26 Investor Participation Amount $ 1,000,000,000.00 Seller Participation Amount $ 3,759,687,928.77