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Lee, Lee, Hong, and Sohn: C-reactive Protein and Erythrocyte Sedimentation Rate Discrepancies and Variations after Intravenous Immunoglobulin Therapy in Kawasaki Disease

Abstract

Purpose

We undertook this study to investigate discrepancies in C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) values, and variations following intravenous immunoglobulin (IVIG) therapy in Kawasaki disease (KD).

Methods

A total of 123 KB patients were retrospectively enrolled. Patients were treated with IVIG 2 g/kg at 2 to 9 days after disease onset. We obtained white blood cell (WBC) count, percentage of neutrophils (% neutrophils), CRP, ESR, and N-terminal pro-brain natriuretic peptide (NT—proBNP) values before and 48 to 72 hours after IVIG treatment. Discrepancy was defined as CRP 210 mg/dL and ESR <50 mm/ hr (Group 1), 0r CRP <10 mg/dL and ESR 250 mm/hr (Group 2).

Results

Thirty-six of 123 subjects (29.2%) had a discrepancy: 25 (20.3%) in Group 1 and 11 (8.9%) in Group 2. In Group 1, 15 patients (60%) had fever for <5 days (early presenter) and 10 (40%) had fever for 25 days (late presenter). There were six early presenters (55%) and five late presenters (45%) in Group 2. Late presenters had higher ESR than early presenters (34.31210 mm/hr vs. 26.3:193 mm/hr, P=0.029). After IVIG treatment, elevated WBC count, % neutrophils, CRP, and NT—proBNP levels normalized. In contrast, ESR increased from 37_4i21_9 mm/hr t0 48.0i22.7 mm/hr (n=36, P:0.0S1).

Conclusions

A discrepancy may be related to the duration of fever. Due to discrepancies in CRP and ESR values in acute KD, both should be measured to assess the degree of inflammatory activity before |V|G treatment. After IVIG treatment, the ESR should not be used as a marker of response to therapy in KD.

REFERENCES

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Fig. 1.
Comparison of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) at presentation.
piv-23-25f1.tif
Table 1.
Comparison of Basic Characteristics between Groups 1 and 2
  Group 1 (n=25) Group 2 (n=11) P
Age (months) 36.3±201 45.0±28.4 0.301
Sex (maIe/female) 12/13 3/8 0.154
Height (cm) 95.5±166 100.3±14.0 0.412
Weight (kg) 14.6±5.0 14.3±5.3 0.892
Duration of fever (days) 4.5±16.6 4.7±2.0 0741
CRP (mg/GL) 15.1±4.6 6.0±2.2 <0.001
ESR (mm/hr) 27.7±122 63.3±10.7 <0.001

Abbreviations: IVIG Intravenous Immunoglobulin; CRP, L-reactive protein; ESR, erythrocyte sedimentation rate. Data are expressed as mean±SD or number. Group 1 includes 25 patients with CRP 210 mg/dL and ESR <50 mm/hr, and group 2 includes 11 patients with CRP <10 mg/dL and ESR≥50 mm/hr at presentation.

Table 2.
Relationship between Fever Duration and Groups
  Group1CRP ≥1O mg/dL and ESR <50 mm/hr Group 2 CRP <10 mg/dL and ESR ≥50 mm/hr
Fever duration <5 days 15 6
Fever duration ≥5 days 10 5
Total 25 11

Abreviations: CRP, C-reactive protein; ESR, erythrocyte sedimentation rate. Data are expressed as number.

Table 3.
Comparison between the Early and Late Presenters in 123 patients
  Early presenters (Fever duration <5 days) Late presenters (Fever duration 25 days) P
Age (months) 27.4 ±18.2 32.7±22.4 0.154
Sex (male/female) 37/31 29/26 0.858
CRP (mg/dL) 8.7±5.8 7.8±5.7 0.359
ESR (mm/hr) 26.3±19.3 34.3±21.0 0.029

Abbreviation: CRP, C-reactlve proteln; ESR, erythrocyte sedlmentatlon rate. Data are expressed as mean±SD or number.

Table 4.
Comparison between Pre- and Post-Intravenous Immunoglobulin Laboratory Values in 123 patients
  Pre-IVIG Post-IVIG p
WBC (/mm3) 13,769±4,269 8,267±2,769 <0.001
% neutrophils 62.9±154 35.1±17.Z <0.001
Hemoglobln (g/dL) 11.3 ±1.0 11.0± 1.0 <0.001
Hematocrit (%) 33.2±2.7 32.5±2.7 0.007
PIatelet (x103/mm) 336±92 433±134 <0.001
Sodium (mEq/L) 136.8±2.6 136.2±9.9 0.564
AST (IU/L) 114±252 121±342 0.826
ALT (IU/L) 104±185 107±301 0.728
Protein (g/dL) 6.6±0.5 7.8±0.7 <0.001
AIbumin (g/dL) 3.8±0.4 3.3±03 <0.001
CRP (mg/dL) 8.3±5.8 1.5±1.3 <0.001
NT-proBNP (pg/mL) 1,212±2,398 300±511 <0.001

Abbreviations: IVIG, intravenous immunoglobulin; WBC, white blood cell; AST, as-partate aminotrasferase; ALTalanine aminotrasferase; CRP, C-reactive protein; NT-proBNP, N-terminal pro—brain natriuretic peptide. Data are expressed as mean±SD.

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