Exhibit 99.4 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-D KEY PERFORMANCE FACTORS August 31, 1997 Expected B Maturity 11/17/97 Blended Coupon 5.94997% Excess Protection Level 3 Month Average 4.59% August, 1997 4.47% July, 1997 4.49% June, 1997 4.82% Cash Yield 17.46% Investor Charge Offs 4.84% Base Rate 8.15% Over 35 Day Delinquency 4.66% Seller's Interest 14.91% Total Payment Rate 12.37% Total Principal Balance $ 30,603,901,306.35 Investor Participation Amount $ 1,000,000,000.00 Seller Participation Amount $ 4,563,766,787.86