Exhibit 99.4 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-D KEY PERFORMANCE FACTORS June 30, 1997 Expected B Maturity 11/17/97 Blended Coupon 5.94865% Excess Protection Level 3 Month Average 4.34% June, 1997 4.82% May, 1997 4.47% April, 1997 3.75% Cash Yield 17.16% Investor Charge Offs 4.60% Base Rate 7.75% Over 35 Day Delinquency 4.57% Seller's Interest 10.08% Total Payment Rate 12.14% Total Principal Balance $ 27,184,721,330.37 Investor Participation Amount $ 1,000,000,000.00 Seller Participation Amount $ 2,741,483,811.88