Exhibit 99.31

MBNA MASTER CREDIT CARD TRUST II

SERIES 1997-N

KEY PERFORMANCE FACTORS
July 31, 1999



Expected B Maturity 11/15/00


Blended Coupon 5.1256%


Excess Protection Level
3 Month Average 6.41%
July, 1999 6.33%
June, 1999 5.28%
May, 1999 7.61%


Cash Yield 18.74%


Investor Charge Offs 4.97%


Base Rate 7.44%


Over 30 Day Delinquency 4.84%


Seller's Interest 9.75%


Total Payment Rate 14.54%


Total Principal Balance $45,698,903,036.29


Investor Participation Amount $900,000,000.00


Seller Participation Amount $4,456,383,517.80