Total Cost of an EVD Episode: Line Items Beyond the Kit

The total cost of an EVD episode includes far more than the price of the drainage kit. It covers the catheter version chosen, replacement components, nursing time for leveling and monitoring, CSF testing, imaging, ICU days, the management of complications, waste from expired stock and training. A fair evaluation looks at all of these using the hospital’s own data.

Value-analysis committees know that the cheapest item is not always the least expensive choice, but they are also wary of suppliers who claim savings they cannot prove. This article offers a neutral framework a distributor and a hospital can use together to map the cost of an EVD episode. It does not provide numbers, because the only numbers that matter are the hospital’s own.

Why is the kit price misleading on its own?

An external ventricular drain often stays in place for days or weeks, during which the patient is usually in a neuro-ICU. Over that period, the hospital spends on staff time, laboratory tests, imaging and, in some cases, treatment of complications. The kit is purchased once at the start. Even a substantial difference in kit price can be small compared with a single additional ICU day or the management of one drain-related infection.

That does not mean kit price is irrelevant. It means a committee comparing systems should ask which other costs each option might influence, and how strongly.

What are the line items in an EVD episode?

The table below lists the main cost categories and whether the device choice is likely to influence them. It is a planning tool, not an economic model.

Which costs does the device influence directly?

Kit and catheter version

The kit and catheter are the visible costs. The EVD-010 Series is supplied with a 31 cm ventricular catheter, a 30 cm measuring scale, a 150 ml drip chamber and an 800 ml drainage bag, in standard or antibiotic-impregnated catheter versions. The antibiotic-impregnated version typically costs more than the standard one, so the hospital’s selection protocol, whether it uses that version for all drains or for selected patients, directly shapes this line.

Replacement components

How often bags and other components are replaced during an episode depends on drainage volume, the hospital’s change-out protocol and the capacity of the components. Ask the manufacturer which components are available separately in your market and include them in the cost model.

Waste and assortment

Every kit that expires on the shelf is pure cost. An assortment with fewer, well-chosen items and a clear rotation routine reduces waste. Using one collection system for ventricular and lumbar drainage, such as the EVD-020 Series, can reduce the number of different items a hospital needs to stock.

Training

A change of system costs staff time in training. A supplier that runs in-service sessions on every shift, provides quick-reference materials and supports super-users reduces that cost. Include training hours honestly in the model, both for switching and for ongoing education of new staff.

Which costs does the device influence indirectly?

Some of the largest cost lines, notably ICU days and complications, are driven primarily by the patient’s condition and the quality of clinical care. Device design can play a role, for example through usability that supports consistent leveling or catheter options that form part of an infection prevention bundle, but it is one factor among many.

Drain-related infection is the clearest example. Its management can involve extended antimicrobial treatment, additional CSF testing, catheter replacement and a longer stay. Hospitals use bundles of measures to reduce that risk, and catheter choice is one of them. The ventricular catheter kit is available in a standard version and an orange antibiotic-impregnated version designed to release its agent in a controlled way over 28 days. A credible cost discussion presents the catheter as part of the bundle, never as an assured source of savings.

How should a hospital build its own cost picture?

A practical approach uses data most hospitals already have:

• Number of EVD placements per year, by location and by catheter version.
• Typical duration of drainage, from nursing or quality records.
• Supply spend on drainage kits and components, from purchasing data.
• Kits written off for expiry or damage.
• Drain-related infections and catheter replacements from infection prevention surveillance.
• Training hours spent on EVD education each year.

With these figures, a committee can estimate what each cost line represents and how a change of system might affect it. The distributor’s role is to supply accurate product information, realistic assumptions about training and waste, and transparency about what the device can and cannot influence.

What does a comparison look like without borrowed numbers?

A committee comparing two systems can lay out the cost lines side by side as simple formulas, then fill in its own values. For example: annual kit spend equals placements per year multiplied by the price of each version, weighted by the share of standard and antibiotic-impregnated catheters. Annual waste equals kits written off multiplied by their price. Training cost equals hours of in-service and competency checks multiplied by the loaded hourly cost of the staff involved.

For the indirect lines, the committee can note a direction rather than a number: whether a feature is expected to make a task easier, harder or no different. Usability findings from a trial on one unit, collected with a short questionnaire, give those directions some substance. The result is not a precise economic model, but it is transparent, it uses the hospital’s own information and it shows clearly which assumptions drive the decision. That is usually what a committee needs.

A distributor can prepare the template in advance and offer to populate the product-related lines, leaving the clinical and cost inputs to the hospital’s finance and quality teams.

How should a distributor present total cost?

Present the framework, not a conclusion. Offer to help the hospital fill it with its own data. Be specific about the lines where your product makes a direct difference, such as assortment simplification, catheter options, training support and waste reduction through rotation. Be modest about the indirect lines. Committees remember suppliers who were honest about the limits of their claims.

A distributor working with DESU can also point to the manufacturer’s quality basis: production in its own cleanrooms in Ankara, Türkiye, under ISO 13485, with CE-marked products and exports to more than 50 countries. That gives the committee confidence that the lower-risk lines, such as consistent product quality and documentation, are covered.

Talk to a DESU product specialist

If you are preparing a total-cost discussion for a value-analysis committee, DESU’s product specialists can provide product details, shelf-life information and documentation for your market. Email sales@desu.tr or request a quote to start the conversation.