Exhibit 99.34 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-D KEY PERFORMANCE FACTORS May 31, 1999 Expected B Maturity 7/15/2003 Blended Coupon 5.7889% Excess Protection Level 3 Month Average 6.61% May, 1999 7.71% April, 1999 5.26% March, 1999 6.86% Cash Yield19.45% Investor Charge Offs 4.88% Base Rate 6.86% Over 30 Day Delinquency 4.89% Seller's Interest 6.97% Total Payment Rate14.69% Total Principal Balance$41,914,776,221.36 Investor Participation Amount$559,000,000.00 Seller Participation Amount$2,922,256,702.87