. Author manuscript; available in PMC: 2017 Nov 13.

Published in final edited form as: J Perinat Med. 2017 Jul 26;45(5):577–583. doi: 10.1515/jpm-2016-0266

Table 2.

B-type natriuretic (BNP) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels through pregnancy and the postpartum.

	18–24 Weeks	30–36 Weeks	In labor or immediately prior to delivery	Within 48 h delivery^a	6–12 Weeks postpartum	6–12 Months postpartum
BNP (pg/mL)
Mean [SD]	31.93 [14.83]	30.68 [21.39]	45.59 [26.94]	84.58^a [72.14]	29.05 [34.93]	21.8 [10.26]
Median [25%–75%]	26.3 [21.8–42.3]	24.7 [17.8–34.7]	36.40 [28.35–60.30]	77.00^a [31.20–108.55]	16.90 [14.30–33.20]	18.50 [15.80–25.70]
NT-proBNP (pg/mL)
Mean [SD]	60.07 [40.19]	43.10 [33.99]	73.50 [59.81]	157.98^a [166.68]	66.07 [73.58]	50.08 [25.88]
Median [25%–75%]	45.80 [32.35–83.35]	35.60 [22.40–56.00]	57.65 [34.90–93.30]	107.50^a [60.90–201.80]	49.10 [35.20–60.90]	40.75 [34.90–54.85]

Levels increased compared to 6–12 months postpartum (P < 0.0001).