Exhibit 99.4 MBNA MASTER CREDIT CARD TRUST II SERIES 1995-A KEY PERFORMANCE FACTORS April 30, 1999 Expected B Maturity 9/15/04 Blended Coupon 5.2444% Excess Protection Level 3 Month Average 5.87% April, 1999 5.01% March, 1999 6.63% February, 1999 5.97% Cash Yield 17.83% Investor Charge Offs 5.23% Base Rate 7.59% Over 35 Day Delinquency 4.87% Seller's Interest 10.40% Total Payment Rate 14.17% Total Principal Balance $42,469,994,217.25 Investor Participation Amount $575,000,000.00 Seller Participation Amount $4,418,074,698.76