Exhibit 99.38 MBNA MASTER CREDIT CARD TRUST II SERIES 1999-A KEY PERFORMANCE FACTORS October 31, 1999 Expected B Maturity 2/17/04 Blended Coupon 5.6463% Excess Protection Level 3 Month Average 5.94% October, 1999 6.11% September, 1999 5.78% August, 1999 5.91% Cash Yield18.61% Investor Charge Offs 4.68% Base Rate 7.82% Over 30 Day Delinquency 5.07% Seller's Interest 9.14% Total Payment Rate14.64% Total Principal Balance$47,636,626,081.62 Investor Participation Amount$500,000,000.00 Seller Participation Amount$4,354,806,563.13