Exhibit 99.30 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-M KEY PERFORMANCE FACTORS November 30, 1998 Expected B Maturity 10/15/02 Blended Coupon 5.4936% Excess Protection Level 3 Month Average 5.40% November, 1998 5.69% October, 1998 6.11% September, 1998 4.40% Cash Yield 17.99% Investor Charge Offs 4.96% Base Rate 7.34% Over 35 Day Delinquency 5.37% Seller's Interest 9.39% Total Payment Rate 13.51% Total Principal Balance $40,339,382,471.40 Investor Participation Amount $750,000,000.00 Seller Participation Amount $3,787,462,952.91