Exhibit 99.38 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-A KEY PERFORMANCE FACTORS September 30, 1999 Expected B Maturity 2/17/2004 Blended Coupon 5.6220% Excess Protection Level 3 Month Average 5.88% September, 1999 5.78% August, 1999 5.91% July, 1999 5.96% Cash Yield18.00% Investor Charge Offs 4.60% Base Rate 7.62% Over 30 Day Delinquency 4.90% Seller's Interest 6.99% Total Payment Rate14.16% Total Principal Balance$45,780,732,257.76 Investor Participation Amount$500,000,000.00 Seller Participation Amount$3,198,912,739.27