Table 1.
Patient Characteristics According to Whether Cardiovascular Magnetic Resonance (CMR) Scans Were Performed
| Variable | CMR Performed (N=40) | No CMR Performed (N=60) | P Value |
|---|---|---|---|
| Demographics | |||
| Age, y, median (Q1–Q3) | 31 (27–33) | 30 (24–35) | 0.92 |
| Hispanic, n (%) | 8 (20%) | 7 (12%) | 0.27 |
| Black, n (%) | 9 (23%) | 21 (35%) | 0.27 |
| Days elapsed to enroll after delivery, median (Q1–Q3) | 22 (10–44) | 24 (12–52) | 0.40 |
| Comorbidity and past medical history | |||
| Diabetes mellitus, n (%) | 3 (8%) | 8 (13%) | 0.51 |
| Hypertension, n (%) | 18 (45%) | 27 (45%) | 1.00 |
| Smoking, n (%) | 13 (33%) | 22 (37%) | 0.44 |
| Substance abuse, n (%) | 3 (8%) | 7 (12%) | 0.74 |
| Autoimmune disease, n (%) | 2 (5%) | 3 (5%) | 1.00 |
| Family history of dilated cardiomyopathy, n (%) | 2 (5%) | 8 (13%) | 0.31 |
| Gravida, n (%) | 2 (1–4%) | 2 (1–4%) | 0.92 |
| Para, n (%) | 2 (1–3) | 2 (1–3) | 0.89 |
| Cesarean delivery, n (%) | 18 (45%) | 32 (53%) | 0.41 |
| Multiple birth, n (%) | 7 (18%) | 12 (20%) | 0.75 |
| NYHA class distribution (I, II, III, IV), n (%) | 7, 18, 9, 6 (18%, 45%, 23%, 15%) | 5, 28, 16, 11 (8%, 47%, 27%, 18%) | 0.57 |
| Biometrics | |||
| BMI, median (Q1–Q3) | 29 (24–35) | 27 (24–33) | 0.41 |
| Height, in, median (Q1–Q3) | 65 (64–66) | 63 (61–66) | 0.05 |
| Weight, lbs, median (Q1–Q3) | 177 (132–216) | 149 (130–191) | 0.29 |
| Systolic blood pressure, mm Hg, median (Q1–Q3) | 109 (98–118) | 110 (100–128) | 0.38 |
| Diastolic blood pressure, mm Hg, median (Q1–Q3) | 71 (59–80) | 68 (62–79) | 0.77 |
| Heart rate, bpm, median (Q1–Q3) | 86 (75–100) | 86 (72–99) | 0.40 |
| Medications | |||
| Inotropes, n (%) | 4 (10%) | 11 (18%) | 0.25 |
| ACE inhibitors, n (%) | 32 (80%) | 40 (80%) | 1.00 |
| Angiotensin receptor blocker, n (%) | 1 (3%) | 0 (0%) | 0.40 |
| β‐Blocker, n (%) | 34 (85%) | 54 (90%) | 0.54 |
| Diuretic, n (%) | 27 (68%) | 43 (72%) | 0.66 |
| Digoxin, n (%) | 3 (8%) | 5 (8%) | 1.00 |
| Laboratories | |||
| Sodium, median (Q1–Q3) | 139 (137–141) | 139 (137–141) | 0.34 |
| BUN, median (Q1–Q3) | 13 (9–16) | 14 (10–20) | 0.23 |
| Cr, median (Q1–Q3) | 0.85 (0.70–1.00) | 0.80 (0.70–1.00) | 0.74 |
| Hematocrit, %, median (Q1–Q3) | 35 (31–38) | 35 (32–39) | 0.78 |
| White blood cells, median (Q1–Q3) | 7.8 (5.6–9.8) | 7.2 (6.0–9.0) | 0.65 |
ACE indicates angiotensin‐converting enzyme; BMI, body mass index; bpm, beats per minute; BUN, blood urea nitrogen; Cr, creatinine; NYHA, New York Heart Association.