Redo-redo aortic root replacement with a mechanical valved conduit in a patient with von Willebrand's disease: Case report

Table 1 Pre- and post-operative hematological parameters

Coagulation profile	Pre-op	Post CPB	Discharge
Hb 115-165 g/L	117	77	106
Activated partial thromboplastin time (APTT) 26-36 secs	39	25	37
INR	1.2	1.2	2.6
FVIII: C 0.5 - 1.5 IU/ml	0.59	0.67	1.43
Factor IX: C 0.7-1.4 IU/ml	0.71	-	-
Factor XII assay 25 - 250 U/dl	16.4	-	-
FVIII/VWF: ristocetin cofactor assay 0.42 - 1.22 IU/ml	0.46	0.32	1.84

Pre-operative ristocetin induced platelet aggregation was normal with 79% aggregation at a ristocetin concentration of 1.5 mg/ml; VWF collagen binding was 43%

ISSN: 1749-8090