Acquired coagulation dysfunction resulting from vitamin K-dependent coagulation factor deficiency associated with rheumatoid arthritis: A case report

Table 1 Blood coagulation function test results

Hospitalization days	PT	INR	FBG	APTT	TT	D-D	FDPs	AT	PTA
2	38.6	3.97	4.85	109.8	16.9	0.89	-	-	19
4	18.4	1.53	5.09	53.9	16.4	0.94	< 4.0	80	54
8	16.9	1.37	4.21	55.7	17.3	0.81	< 4.0	67	62
11	16.4	1.31	4.82	55.5	16.7	1.28	4.2	75	65

Normal reference range: Prothrombin time: 11.5-14.5 s; international normalized ratio: 0.5-1.2; fibrinogen: 2.0-4.0 g/L; activated partial thromboplastin time: 29-42 s; thrombin time: 14-19 s; D-D: < 0.5 μg/mL FEU; FDPs: < 0.5 μg/mL; AT: 80%-120%; PTA: 75%-125%. Hospitalization day 1 was November 27, 2019; day 2: November 28, 2019; day 4: November 30, 2019; day 8: December 4, 2019; day 11: December 7, 2019. PT: Prothrombin time; INR: International normalized ratio; FBG: Fibrinogen; APTT: Activated partial thromboplastin time; TT: Thrombin time; D-D: D-dimer; FDPs: Fibrin degradation products; AT: Antithrombin; PTA: Prothrombin activity.