Early Detection of Hemodialysis Arteriovenous Fistula Dysfunction with Intra-access Static and Total Pressure Measurement / 대한신장학회잡지
Korean Journal of Nephrology
;
: 70-78, 2007.
Article
in Korean
| WPRIM
| ID: wpr-184517
ABSTRACT
PURPOSE:
To detect the dysfunction of arteriovenous fistula (AVF) early, we have developed a new method to calculate the intra-vascular conduit flow rate based on the Bernoulli's theory. However, this method has limitation on detection of inflow stenosis. For detection of both in- and out-flow stenosis, we tried to measure intra-access static (pS) and total pressure (pT), and compared with angiographic findings.METHODS:
From a total of 46 cases of native AVFs, of at least 3 months of construction, intra-access pS and pT were measured, before starting hemodialysis. deltap (pT-pS) and pT/mean arterial pressure (MAP) ratio were calculated, and compared with angiographic findings.RESULTS:
Among 37 patients without outflow stenosis (Vs) in fistulogram, 10 patients with inflow stenosis (As) had significantly lower pT/MAP ratio and deltap than those without As patients (p<0.005). Among 34 patients without As, deltap was significantly lower in 7 patients with Vs than those 27 patients without Vs (p=0.001).CONCLUSION:
pT/MAP ratio was correlated with As, and deltap reflects Vs in angiography. The measurement of pS and pT might be useful to predict inflow and outflow stenosis of AVFs.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Angiography
/
Arteriovenous Fistula
/
Renal Dialysis
/
Constriction, Pathologic
/
Arterial Pressure
Type of study:
Diagnostic study
/
Prognostic study
/
Screening study
Limits:
Humans
Language:
Korean
Journal:
Korean Journal of Nephrology
Year:
2007
Type:
Article
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