Complications related to indwelling caval catheters on a gynecologic oncology service

Risk of venous thromboembolism associated with totally implantable venous access ports in cancer patients: A systematic review and meta-analysis

BACKGROUND

Totally implantable venous access ports (TIVAPs) for chemotherapy are associated with venous thromboembolism (VTE). We aimed to quantify the incidence of TIVAP-associated VTE and compare it with external central venous catheters (CVCs) in cancer patients through a meta-analysis.

METHODS

Studies reporting on VTE risk associated with TIVAP were retrieved from medical literature databases. In publications without a comparison group, the pooled incidence of TIVAP-related VTE was calculated. For studies comparing TIVAPs with external CVCs, odds ratios (ORs) were calculated to assess the risk of VTE.

RESULTS

In total, 80 studies (11 with a comparison group and 69 without) including 39 148 patients were retrieved. In the noncomparison studies, the overall symptomatic VTE incidence was 2.76% (95% confidence interval [CI]: 2.24-3.28), and 0.08 (95 CI: 0.06-0.10) per 1000 catheter-days. This risk was highest when TIVAPs were inserted via the upper-extremity vein (3.54%, 95% CI: 2.94-4.76). Our meta-analysis of the case-control studies showed that TIVAPs were associated with a decreased risk of VTE compared with peripherally inserted central catheters (OR = 0.20, 95% CI: 0.09-0.43), and a trend for lower VTE risk compared with Hickman catheters (OR = 0.75, 95% CI: 0.37-1.50). Meta-regression models suggested that regional difference may significantly impact on the incidence of VTE associated with TIVAPs.

CONCLUSIONS

Current evidence suggests that the cancer patients with TIVAP are less likely to develop VTE compared with external CVCs. This should be considered when choosing the indwelling intravenous device for chemotherapy. However, more attention should be paid when choosing upper-extremity veins as the insertion site.

The risk of bloodstream infection associated with totally implantable venous access ports in cancer patient: a systematic review and meta-analysis

OBJECTIVE

This systematic review and meta-analysis aimed to provide evidence-based guidance to better understand the risk of central line-associated bloodstream infection (CLABSI) in cancer patients who received totally implantable venous access ports (TIVAPs) compared with those who received external central venous catheters (CVCs).

METHODS

A systematic search of PubMed, Web of science, Embase, and the Cochrane Library was carried out from inception through Oct 2018, with no language restrictions. Trials examining the risk of CLABSI in cancer patients who received TIVAPs compared with those who received external CVCs were included. Two reviewers independently reviewed, extracted data, and assessed the risk of bias of each study. A random-effect model was used to estimate relative risks (RRs) with 95% CIs.

RESULTS

In all, 26 studies involving 27 cohorts and 5575 patients reporting the incidence of CLABSI in patients with TIVAPs compared with external CVCs were included. Pooled meta-analysis of these trials revealed that TIVAPs were associated with a significant lower risk of CLABSI than were external CVCs (relative risk [RR], 0.44; 95% confidence interval [CI], 0.31-0.62; P < 0.00001), which was confirmed by trial sequential analysis for the cumulative z curve entered the futility area. Subgroup analyses demonstrated that CLABSI reduction was greatest in adult patients (RR [95% CI], 0.35 [0.22-0.56]) compared with pediatric patients who received TIVAPs (RR [95% CI], 0.55 [0.38-0.79]).

CONCLUSIONS

TIVAP can significantly reduce the risk of CLABSI compared with external CVCs.

Randomized clinical trial comparing venous cutdown with the Seldinger technique for placement of implantable venous access ports

Background

The aim of this randomized controlled study was to compare the primary success rate between venous cutdown and the Seldinger technique for placement of the totally implantable venous access port (TIVAP).

Methods

A total of 152 patients were randomized to receive TIVAP placement by either venous cutdown or the Seldinger technique. The main endpoint was the primary success rate. Secondary endpoints included overall success rate, procedure time and perioperative complication rates. Multiple logistic regression analysis was undertaken to assess the influence of different variables on primary success.

Results

The primary success rate was 71 per cent for venous cutdown and 90 per cent for the Seldinger technique (P = 0·007). The mean procedure time was significantly shorter for the Seldinger technique (48·9 versus 64·8 min; P &lt; 0·001). The overall success rate was 97·4 per cent. The rate of perioperative complications was similar for the two approaches (5 per cent), but was higher when a procedure was converted. The variables sex, body mass index, implantation side and surgeon experience had no impact on the primary success rate.

Conclusion

The Seldinger technique was more effective and quicker than venous cutdown, and should be regarded as the method of choice for TIVAP placement. Registration number: NCT00272623 (http://www.clinicaltrials.gov).

Protocol for the implantation of a venous access device (Port-A-Cath System). The complications and solutions found in 560 cases

INTRODUCTION

The cannulation of suitable peripheral veins may be a very painful experience. Implantable venous access systems have to some degree relieved this problem and help to provide an improvement in terms of quality of life.

MATERIAL AND METHODS

We have evaluated 560 patients during a follow up period of two years. A low overall complication percentage of 7.32% was seen when using the venous access device.

RESULTS

Complications and treatments were: pneumothorax; portal rotation or infection; catheter infection; embolism and migration; extravasation; partial or total obstruction of the device; rupture of the catheter or the membrane.

CONCLUSIONS

There is no other system that allows repeated venous access on such a long term basis. Placing the devices completely under the skin allows the patient to conduct a normal life style, and its maintenance does not need any special care, with the exception of the monthly heparinised serum infusion. The preferred option is to insert the catheter through the cephalic vein in the delto pectoral groove.

Surface modification of a segmented polyetherurethane using a low-powered gas plasma and its influence on the activation of the coagulation system

A medical grade segmented polyetherurethane (PEU) was treated with a low-powered gas plasma using O(2), Ar, N(2) and NH(3) as the treatment gases. Changes in the surface functional group chemistry were studied using X-ray photoelectron spectroscopy. The wettability of the surfaces was examined using dynamic contact angle measurements and the surface morphology was evaluated using atomic force microscopy. The influence of the surface modification to the polyurethane on the blood response to the polyetherurethane was investigated by measuring changes in the activation of the contact phase activation of the intrinsic coagulation cascade. The data demonstrate that the plasma treatment process caused surface modifications to the PEU that in all cases increased the polar nature of the surfaces. O(2) and Ar plasmas resulted in the incorporation of oxygen-containing groups that remained present following storage in an aqueous environment. N(2) and NH(3) plasmas resulted in the incorporation of nitrogen-containing groups but these were replaced with oxygen-containing groups following storage in the aqueous environment. In all plasma treatments there was a lowering of contact phase activation compared to the untreated surface, the N(2) and NH(3) treatments dramatically so.

Upper extremity deep vein thrombosis associated with indwelling peripheral venous catheters in gynecology oncology patients

OBJECTIVE

The goal of this study was to review the clinical presentation, management, and outcome of upper extremity deep vein thrombosis (UEDVT) in women with gynecologic malignancies who had indwelling peripheral venous access catheters.

METHODS

From a retrospective review of medical records, we identified 13 patients with various gynecologic malignancies who were diagnosed with UEDVT during their disease course. We obtained tumor data, detailed information regarding the indwelling catheters used, and the diagnosis and management of UEDVT.

RESULTS

Two hundred sixty-four women with gynecologic malignancies underwent insertion of an indwelling peripheral catheter by interventional radiology over a 5-year period. A total of 325 catheters were placed in these patients. Thirteen patients developed UEDVTs, and all had a catheter in situ at the time of DVT diagnosis. Eleven of thirteen patients had Peripheral Access System (PAS) Ports and two had peripheral indwelling central catheters (PICCs). The mean age of the patients was 53 years (range, 32-70). At the time of UEDVT diagnosis patients had the following: progressive cancer (n = 8), stable disease (n = 1), no evaluable disease (n = 4), and actively receiving chemotherapy (n = 7). Clinical signs/symptoms at the time of diagnosis included: catheter occlusion (n = 2), arm swelling and pain (n = 10), and superior vena cava syndrome (n = 1). Diagnosis of thrombosis was confirmed using Doppler ultrasound (n = 4), venography (n = 5), and both modalities (n = 4). Management of UEDVT consisted of anticoagulation with warfarin (2-6 months) (n = 9), urokinase infusion (n = 2), intravenous antibiotics for 21 days and heparin for 10 days (n = 1), arm elevation only (n = 1), Lovenox for 60 days (n = 1), and no therapy (n = 1). There were no complications associated with anticoagulation. No patient had a pulmonary embolism. The incidence of UEDVT among our patients with indwelling venous catheters was 5.7%.

CONCLUSION

Symptomatic UEDVT is an uncommon complication of indwelling peripheral venous catheters in women with gynecologic malignancies. The risk of pulmonary embolism is low in this patient population.

Totally implantable venous-access ports: local problems and extravasation injury

Totally implantable venous-access ports (TIVAPs) are valuable instruments for long-term intravenous treatment of patients with cancer, but implantation and use of these devices are each associated with complications. In addition to the perioperative problems, long-term complications can arise; these can be classified in five categories-catheter malfunction, catheter-related venous thrombosis, catheter-related infection, port-related complications, and extravasation injury. Such complications reduce the benefits of reliable access to the venous system in patients with malignant tumours. The vast majority of such disadvantages are attributable to inexpert handling of ports and, therefore, should be avoidable. TIVAP placement procedures and TIVAP complications are discussed in this review, with special emphasis on local problems and extravasation injuries. To obtain maximum benefit from TIVAPs, all health-care personnel must be familiar with the use and routine maintenance procedures of the devices and treatment options for catheter-related complications.