New NBC medical drama Heartbeat fared a little better with viewers than it it did with critics in its debut. The series starring Melissa George drew a 1.4 adults 18-49 rating at 9 PM in the fast nationals with a preview behind The Voice (2.4, down -8% from last week).

This was the original slot Heartbeat had been assigned on the fall schedule before George’s pregnancy delayed the launch. NBC’s other new medical drama, Chicago Med, stepped in and debuted with a solid 2.2 adults 18-49 rating in November with a slightly stronger Voice lead-in (2.6). Chicago Med, already renewed for next season, will remain in the Tuesday 9 PM slot, with Heartbeat moving into its regular Wednesday 8 PM time period tonight.

In addition to Chicago Med, Heartbeat‘s 1.4 rating was below the previews of new NBC comedy Superstore, which also has been renewed, behind The Voice on Monday (2.0 at 10 PM and 1.6 at 10:30 PM) and last week’s hourlong preview of comedy Crowded (1.8, 1.4 fast nationals in the 10 PM hour) following a two-hour The Voice on Tuesday. Heartbeat was a tad above the post-Voice sampling of fellow new comedy Telenovela (1.4, 0.8), which remains on the bubble.

bradleycooperSpeaking of shows on the bubble, CBS’ freshman drama Limitless got a needed shot of ratings adrenaline last night, perking up two tenths (+18%) to a seven-week high in the demo and 11-week high in total viewers (6.79 million) with the return of executive producer/recurring guest star Bradley Cooper.

Limitless was helped by lead-in, NCIS: New Orleans (1.8, 13.11 million), which also was up two tenths week-to-week. Flagship NCIS (2.0, 15.6 million) was steady. CBS won the night in 18-49 (1.7) and total viewers (11.8 million).

Elsewhere, the CW’s The Flash (1.1) was sluggish in its return from a 3-week break, slipping to a season low, but may be adjusted up in the finals. ABC’s Fresh Off the Boat (1.2) inched up by a tenth, newbie The Real O’Neals (1.0) held steady, Agents of SHIELD (0.9) ticked down to a low, and Beyond the Tank (0.6) improved on recently canceled Of Kings and Prophets‘ second and final episode by a tenth.