  The inflationary potential and its derivatives determine the spectrum of
scalar and tensor metric perturbations that arise from quantum fluctuations
during inflation. The CBR anisotropy offers a promising means of determining
the spectra of metric perturbations and thereby a means of constraining the
inflationary potential. The relation between the metric perturbations and CBR
anisotropy depends upon cosmological parameters -- most notably the possibility
of a cosmological constant. Motivated by some observational evidence for a
cosmological constant (large-scale structure, cluster-baryon fraction,
measurements of the Hubble constant and age of the Universe) we derive the
reconstruction equations and consistency relation to second order in the
presence of a cosmological constant. We also clarify previous notation and
discuss alternative schemes for reconstruction.
