Impact of C-reactive Protein on Anticoagulation Monitoring in Extracorporeal Membrane Oxygenation.
J Cardiothorac Vasc Anesth
; 38(9): 1885-1896, 2024 Sep.
Article
de En
| MEDLINE
| ID: mdl-38960805
ABSTRACT
OBJECTIVE:
To evaluate the impact of inflammation on anticoagulation monitoring for patients supported with extracorporeal membrane oxygenation (ECMO).DESIGN:
Prospective single-center cohort study.SETTING:
University-affiliated tertiary care academic medical center.PARTICIPANTS:
Adult venovenous and venoarterial ECMO patients anticoagulated with heparin/ MEASUREMENTS AND MAINRESULTS:
C-Reactive protein (CRP) was used as a surrogate for overall inflammation. The relationship between CRP and the partial thromboplastin time (PTT, seconds) was evaluated using a CRP-insensitive PTT assay (PTT-CRP) in addition to measurement using a routine PTT assay. Data from 30 patients anticoagulated with heparin over 371 ECMO days was included. CRP levels (mg/dL) were significantly elevated (median, 17.2; interquartile range [IQR], 9.2-26.1) and 93% of patients had a CRP of ≥5. The median PTT (median 58.9; IQR, 46.9-73.3) was prolonged by 11.3 seconds compared with simultaneously measured PTT-CRP (median, 47.6; IQR, 40.1-55.5; p < 0.001). The difference between PTT and PTT-CRP generally increased with CRP elevation from 2.7 for a CRP of <5.0 to 13.0 for a CRP between 5 and 10, 17.7 for a CRP between 10 and 15, and 15.1 for a CRP of >15 (p < 0.001). In a subgroup of patients, heparin was transitioned to argatroban, and a similar effect was observed (median PTT, 62.1 seconds [IQR, 53.0-78.5 seconds] vs median PTT-CRP, 47.6 seconds [IQR, 41.3-57.7 seconds]; p < 0.001).CONCLUSIONS:
Elevations in CRP are common during ECMO and can falsely prolong PTT measured by commonly used assays. The discrepancy due to CRP-interference is important clinically given narrow PTT targets and may contribute to hematological complications.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Protéine C-réactive
/
Oxygénation extracorporelle sur oxygénateur à membrane
/
Anticoagulants
Limites:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Langue:
En
Journal:
J Cardiothorac Vasc Anesth
Sujet du journal:
ANESTESIOLOGIA
/
CARDIOLOGIA
Année:
2024
Type de document:
Article