Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-H KEY PERFORMANCE FACTORS MARCH, 1998 Expected B Maturity 09/17/01 Blended Coupon 5.7706% Excess Protection Level 3 Month Average 5.09% March, 1998 5.91% February, 1998 4.70% January, 1998 4.64% Cash Yield 18.56% Investor Charge Offs 4.85% Base Rate 7.80% Over 35 Day Delinquency 5.06% Seller's Interest 11.41% Total Payment Rate 13.80% Total Principal Balance $ 33,909,306,783.29 Investor Participation Amount $ 1,200,000,000.00 Seller Participation Amount $ 3,867,972,264.80