Exhibit 99.23

MBNA MASTER CREDIT CARD TRUST II SERIES 1997-B

KEY PERFORMANCE FACTORS
July 31, 1999



Expected B Maturity 3/15/12


Blended Coupon 5.4135%



Excess Protection Level
3 Month Average 6.24%
July, 1999 5.96%
June, 1999 5.15%
May, 1999 7.61%


Cash Yield 18.70%


Investor Charge Offs 4.97%


Base Rate 7.77%


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 $1,000,000,000.00


Seller Participation Amount $4,456,383,517.80