Impact of Hemodialysis Catheter Dysfunction on Dialysis and Other Medical Services: An Observational Cohort Study

Table 3

Repeated measures analysis* of medical services associated with catheter dysfunction.

Type of medical service	Odds ratio**	95% confidence interval		𝑃-value
		Lower	Upper
Missed session due to access problems	2.50	2.10	2.97	<0.001
Access procedure
Limited definition***	2.10	1.97	2.25	<0.001
Expanded definition****	1.17	1.10	1.25	<0.001
Missed session or access procedure	2.21	2.11	2.33	<0.001
Hospitalization (any diagnosis)	1.10	1.04	1.17	0.001

*Multivariate analyses included age, gender, race, underlying cause of renal failure, dialysis vintage, ESRD Network, Charlson Comorbidity Index, and whether the patient was incident to catheter dialysis, as co-variables.
**Odds of medical service before the next dialysis session among those with versus without catheter dysfunction in the preceding session.
***Consists of injection for catheter evaluation with fluoroscopy (36598); thrombolytic de-clotting of catheter (36593); mechanical removal of clot (36596); mechanical removal of intraluminal (intracatheter) obstructive material (75902); injection of “TPA” (J2997).
****Consists of those procedures included in the limited definition, plus tunneled catheter exchange or replacement (36581), and the combination of removal of tunneled catheter (36589) plus tunneled catheter insertion (36558).