Exhibit 99.22 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-M KEY PERFORMANCE FACTORS SEPTEMBER, 1998 Expected B Maturity 12/15/06 Blended Coupon 5.8747% Excess Protection Level 3 Month Average 5.29% September, 1998 4.33% August, 1998 6.28% July, 1998 5.24% Cash Yield 17.38% Investor Charge Offs 5.18% Base Rate 7.87% Over 35 Day Delinquency 5.04% Seller's Interest 13.10% Total Payment Rate 13.10% Total Principal Balance $ 39,849,511,082.92 Investor Participation Amount $ 500,000,000.00 Seller Participation Amount $ 5,219,716,564.43