Exhibit 99.29 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-K KEY PERFORMANCE FACTORS May 31, 1999 Expected B Maturity 11/15/2005 Blended Coupon 5.0808% Excess Protection Level 3 Month Average 6.51% May, 1999 7.63% April, 1999 5.18% March, 1999 6.74% Cash Yield 19.45% Investor Charge Offs 4.88% Base Rate 6.94% Over 30 Day Delinquency 4.89% Seller's Interest 6.97% Total Payment Rate 14.69% Total Principal Balance $41,914,776,221.36 Investor Participation Amount $750,000,000.00 Seller Participation Amount $2,922,256,702.87