Penrose Drain
A Penrose drain is a flexible, open, passive wound drain that allows fluid to travel along its surfaces into a dressing or collection appliance. It has no suction reservoir. The Cardinal product line is latex and radiopaque; check the actual product label rather than assuming all Penrose-type drains have identical materials or imaging properties.[1]
For broader indications and removal decisions, see JP and wound-drain guidance. For a closed silicone channel drain, see Blake Drain.
When the design is useful
An open passive drain may suit a selected superficial wound or cavity that needs a maintained drainage route. Its usefulness depends on position, the wound opening, the fluid and continued drainage. It does not actively evacuate every recess, treat the underlying infection or replace debridement.
| Feature | Clinical implication |
|---|---|
| Passive drainage | No bulb activation is needed, but positioning, dressing care and patency still require attention. |
| Open exit | Drainage reaches the dressing or appliance; protect surrounding skin and monitor soiling. The wound is not isolated from external contamination. |
| No measuring reservoir | Precise output measurement is harder and may require a suitable collection appliance. Visual dressing assessment is not equivalent to a measured daily volume. |
| Flexible tube | Securement is needed to avoid inward migration or displacement. Softness does not remove the risks of retention, tissue injury or difficult removal. |
| Material | Check latex allergy and use an appropriate alternative when needed.[1] |
Neither an open design nor a closed design guarantees freedom from infection. Do not convert animal bacterial-migration experiments or observational associations into a universal human infection rate for Penrose versus closed-suction drains.
Sampling and monitoring
Assess wound appearance, pain, swelling, fever, drainage character and the adequacy of ongoing drainage. A sudden reduction in discharge with worsening swelling or systemic symptoms requires reassessment.
An open drain does not make culture or fluid chemistry impossible, but contaminated dressing fluid is an unreliable specimen. If testing is needed, obtain fresh fluid aseptically using a collection method agreed with the laboratory. IDSA/ASM cautions that cultures from long-standing drains, particularly after more than three days, can reflect colonization rather than the cause of infection.[2]
Give the patient or caregiver explicit instructions for dressings, skin care, protecting the drain, recognizing displacement and contacting the treating team. Simpler hardware does not eliminate the need for education or follow-up.
Removal and antibiotics
Set a removal plan based on the purpose of drainage, wound condition and clinical progress. Do not apply a universal calendar or a closed-suction output threshold to an open drain. WHO recommends removing wound drains when clinically appropriate; its timing evidence was limited and does not establish a Penrose-specific cutoff.[3]
Remove the securing material and drain with attention to unexpected resistance, then confirm that the device is intact. Continued swelling, discharge or infection may require further assessment even after removal.
Do not continue prophylactic antibiotics solely because a drain remains. Antibiotics for an established infection follow the diagnosis, source-control assessment and microbiology.[3]
References
1. Cardinal Health. Jackson-Pratt Wound Drains: product catalog. 2021. Manufacturer catalog (distributor-hosted copy).
2. Miller JM, Binnicker MJ, Campbell S, et al. Guide to utilization of the microbiology laboratory for diagnosis of infectious diseases: 2024 update by IDSA and ASM. Clin Infect Dis. 2024. Interventional Radiology and Drain Devices. doi:10.1093/cid/ciae104.
3. World Health Organization. Global Guidelines for the Prevention of Surgical Site Infection. 2nd ed. 2018. Section 4.26: antibiotics and drain removal and Web Appendix 27: systematic review.