禁止存储过程中的事务

我想知道是否可以在SQL存储过程中抑制事务。我的SP中有以下情况(我希望实现):

WHILE TRUE
BEGIN TRY
    BEGIN TRANSACTION A
    RECEIVE MESSAGE FROM SSB QUEUE WITH TIMEOUT

    BEGIN SUPPRESS TRANSACTION 
      WHILE RECORD IN TABLE
         BEGIN TRANSACTION B
           DELETE RECORD FROM TABLE OUTPUT RECORD INTO D
           SEND RECORD D TO OTHER SSB QUEUE
         COMMIT TRANSACTION B
    END SUPPRESS TRANSACTION
    COMMIT TRANSACTION A
END TRY
BEGIN CATCH
    ROLLBACK TRANSACTION A
END CATCH

所以我真正想做的是事务B不会被登记在事务A中:)