Wound Care General Knowledge: Dressings, DSD & Drain Care

Walk onto any med-surg floor at change of shift and you will hear the same questions echoing down the hall. What dressing goes on this wound. When did the last one come off. Is the drain output trending up or down. Who has the supplies cart key.

Wound care looks tidy on paper. In real life it is a moving target. The skin you see at 0700 is not the skin you will see at 1900, and the dressing choice that was perfect yesterday might be wrong today.

Some patients change overnight. Some change over the course of a single shift. The only honest stance is to reassess at every dressing change rather than trust an order written 48 hours ago.

So let us walk through the general knowledge every certified wound clinician carries in their head. Dressing categories. What each one actually does. When DSD is the right call and when it is lazy. How to handle post-op drains (JP, Hemovac, Penrose). What changes after a mastectomy.

This is a clinical reference. It is not personal medical advice. If you are studying for the WCC, CWCN, CWS, or CWON exam, treat this as one layer of your prep. Pair it with your text, your facility protocols, and supervised practice.

If you are a caregiver reading this because someone you love just came home with a drain or a healing incision, please loop in their surgical team before you change anything. The general principles are stable. The specifics for one body, one wound, one surgeon preference all vary.

Dressings exist on a spectrum, and that is the part new clinicians miss. A wound is not a category. It is a moving condition. Today heavily exuding stage 3 pressure injury might be tomorrow clean granulating bed that needs nothing more than a hydrogel sheet and patience.

Two weeks later that same wound may have closed almost completely and need only a transparent film and weekly reassessment. The dressing has to match where the wound is, not where it was on admission, and definitely not where the original order said three weeks ago.

Broadly, you will see seven working families on your supply cart. Gauze (dry and impregnated). Transparent films. Hydrocolloids. Foams. Alginates. Hydrogels. And antimicrobial dressings (silver, iodine, PHMB, honey, and the absorbent contact layers like Drawtex and Drymax).

Each family does one or two things very well and a few things badly. Memorize what each is for, then memorize what each is not for. That second list is what passes the exam and keeps wounds from going sideways on the floor.

Here is a small habit that pays off. Before you touch any wound, take 30 seconds and ask four questions out loud (or in your head if the patient is awake and you do not want to alarm them).

What is the exudate level. What is the tissue type at the wound base. Is the periwound intact or macerated. And is there infection risk that changes your dressing choice today. Those four answers drive 90 percent of dressing decisions on the floor.

Exudate is the easy starter. None, scant, moderate, heavy, copious. Those words mean something. None or scant means you want moisture donation. Think hydrogel or transparent film. Moderate means you want balanced absorption. Foam, or hydrocolloid for the right depth.

Heavy or copious means you reach for alginate, super-absorbent polymers, or layered foam with a Drawtex contact layer underneath to wick laterally. Get the exudate match wrong and you either dry the wound bed or macerate the periwound. Both stall healing.

DSD shows up in nursing notes, doctor orders, and on every CWCN practice exam, and it gets used loosely. DSD means dry sterile dressing. The classic order reads DSD daily and PRN, or DSD with Kerlix wrap change BID.

It is a layered dry gauze dressing applied with sterile technique. Typically over a clean closed surgical incision or a stable wound that does not need a moist environment to heal properly day to day.

What DSD is good for. Clean closed primary intention incisions in the first 24 to 48 hours. Surgical staple or suture lines that are dry. Certain post-op orthopedic wounds where the surgeon wants visualization at each change.

What DSD is not good for. Any wound healing by secondary intention. Anything moist. Anything with eschar or slough that needs autolytic debridement. Any chronic wound where you are trying to maintain a moist healing environment for cellular migration.

New nurses sometimes default to DSD because it feels safe. But applying dry gauze to a granulating wound bed is the fastest way to disrupt epithelial migration. The dressing sticks. The next change pulls fragile tissue off with it. The wound goes backward.

Antimicrobial dressings are their own little universe and worth a paragraph each. Silver dressings like Aquacel Ag, Mepilex Ag, and Acticoat release ionic silver. They are the workhorse for critically colonized wounds or wounds at high bioburden risk.

They are not a substitute for systemic antibiotics in clinical infection. They buy time and reduce surface bioburden while the underlying issue is addressed. Iodine dressings like Iodosorb and Inadine handle similar territory and have a long clinical history.

Some iodine formulations slowly release the agent in low concentrations that do not damage healthy tissue the way povidone-iodine soaks can. PHMB dressings like Kerlix AMD and Telfa AMD are gentler on healthy tissue and tolerated for longer wear periods.

Honey dressings like Medihoney work through osmotic effects, low pH, and direct antibacterial properties. They have a particular niche in burns, donor sites, and slow-healing chronic wounds where other dressings have stalled progress.

Drawtex deserves a specific mention because of how often it appears on practice exams. Drawtex is a hydroconductive dressing. Not strictly antimicrobial on its own, but it physically wicks exudate, bacteria, slough, and inflammatory mediators away from the wound bed via capillary action.

The mechanism is called LevaFiber technology. The engineering matters. The fiber structure pulls fluid laterally across the dressing rather than just vertically into a top absorbent. That keeps the wound bed cleaner between changes and reduces maceration of the periwound skin.

Clinicians like Drawtex under compression for venous ulcers, under foam for heavily draining wounds, and on dehisced surgical sites where you want to pull contaminants out of the wound bed. Drymax is a similar absorbent concept. Superabsorbent core wrapped in a wicking face for moderate-to-heavy exudate.

Post-op drains are their own skill. You will see three common types on med-surg floors. Jackson-Pratt or JP. Hemovac. And Penrose. They do not work the same way. They do not get emptied the same way. And the patient teaching for each is different.

A JP drain is a soft bulb with closed suction. You strip the tubing toward the bulb if facility policy allows, empty the bulb when it is roughly half full, recompress it to reestablish suction, and record output in milliliters with character.

Character means serous, serosanguineous, sanguineous, or purulent. A Hemovac is a larger spring-loaded reservoir doing the same job for higher-volume drainage. You compress the lid to engage suction and record the output volume at every emptying for trend tracking.

A Penrose drain is passive. No suction at all. Just an open soft tube that lets fluid drain by gravity onto a dressing. Penrose drains get covered with absorbent gauze, often with a safety pin or suture preventing migration, and the gauze gets changed when saturated.

Confuse a Penrose with a JP and you will either ignore meaningful output or try to empty a drain that has nothing to empty. JP and Hemovac volumes are charted at every emptying. Penrose output is described qualitatively because you cannot measure it precisely.

All drains should be inspected at the skin insertion site at every shift. Look for redness, pain, or signs of separation. The drain is part of the wound, not an accessory to it. Treat the insertion site with the same sterile care as the main wound.

Drain care after mastectomy is its own teaching block. Patients usually go home with one or two JP drains in place. The nurse who teaches them on discharge day is doing surgical recovery a giant favor by being thorough and clear.

The script sounds something like this. Empty each drain twice a day, morning and evening. More often if it is filling fast. Record the volume and color in a log. The log goes to every follow-up appointment so the surgical team can see the trend.

Call the surgeon office if output stays above 30 mL over 24 hours when it had been dropping. If output suddenly turns bright red after being pink. If the patient develops fever. Or if the insertion site gets red, hot, or starts leaking around the tubing.

Drains usually come out when 24-hour output stays under 25 to 30 mL for two consecutive days. But the surgeon makes the call. Until then, the drain stays pinned to the patient clothing. Never dangling. Never tucked into a bra strap where it can pull.

Strip the tubing gently if the surgeon orders it. Some teams have moved away from stripping because of concerns about pulling on the surgical site or causing trauma to the closed-suction system. Always check the specific facility protocol and the surgeon written instructions first.

Post-circumcision wound care, whether infant or adult, has a few non-negotiables. Keep the area clean. Warm water during diaper changes for infants. Gentle washing for adults. Avoid scented soaps or wipes during the first week of healing.

Petroleum jelly or antibiotic ointment on the glans or under the Plastibell for infants who had a Plastibell technique. Apply for the first 5 to 7 days. This prevents the healing tissue from sticking to the diaper or clothing during normal movement.

For adults, a light non-adherent dressing for the first 24 to 48 hours protects the suture line. After that, most surgeons want the area open to air during showers and lightly covered the rest of the time during normal daily activity.

Loose-fitting cotton underwear or boxers reduces friction and helps the inflammation settle faster. Tight clothing or synthetic fabrics trap heat and moisture, which slows healing and can encourage minor skin irritation around the healing site over the first two weeks.

Watch for the red flags. Spreading redness. Foul odor. Purulent discharge. Fever. Urinary retention. Or excessive swelling beyond what was expected. Some bruising and yellow film (granulation, not pus) is normal in the first week and often alarms patients who were not warned.

A small amount of bleeding in the first 24 hours is normal. Soaking through a dressing in under an hour is not. Patient teaching matters as much as the dressing itself. People who understand what is normal call less and recover with less anxiety.

A printed handout with photos of normal day-3, day-7, and day-14 healing, given before discharge and not after, outperforms verbal instructions every time. The patient or partner can look at the handout at 2 AM instead of calling the on-call team in a panic.

Clean versus sterile technique is a question that comes up in every dressing change discussion. The short answer. Closed surgical incisions in the first 24 to 48 hours, central line dressings, and most acute care dressing changes get sterile technique.

Chronic wounds in the home setting typically use clean technique. Pressure injuries being changed by a family caregiver three times a week. Venous leg ulcers under compression bandaging. Diabetic foot ulcers being managed in the outpatient clinic on a weekly schedule.

The CDC and WOCN both acknowledge that clean technique is appropriate for chronic wound care in non-acute settings when the patient immune status allows it. Sterile technique uses sterile gloves, sterile fields, sterile saline, and sterile instruments throughout the change.

Clean technique uses clean gloves, tap water or sterile saline if available, and bagged supplies that have not touched dirty surfaces. The distinction is not about being lax. It is about matching the level of asepsis to the actual infection risk of the wound.

Whichever you use, the principles are the same. Hand hygiene before and after. Set up your field first so you are not rummaging mid-change. Work from clean to dirty, never the reverse. Discard contaminated materials immediately into the right disposal container.

Document what you saw. Wound size, depth, undermining, tunneling, exudate, base tissue, periwound, odor, pain, patient tolerance. The documentation is the legal record. If it was not charted, it did not happen, and that is still the rule in 2026 surveys.

One more habit worth building. Photograph wounds when your facility allows it, with consent, on the secure imaging system. Photos catch subtle changes the eye misses across days and shifts. They also protect you if the wound trajectory becomes a quality review later.

Inventory matters more than people think. Build a standard supply tray for your most common dressings and check it at the start of each shift. Sterile and clean gloves, sterile saline, gauze, Kerlix, foam, transparent film, hydrocolloid, alginate, scissors, paper ruler, and a biohazard bag.

Rotate stock so the older sterile packages move first. Surveyors check expiration dates and integrity. The best wound clinicians are obsessive about their carts because running out of the right dressing mid-change wastes time, raises patient anxiety, and breaks the sterile field you just set up.

Wound healing is a trend, not a snapshot. One measurement is data. Two is a comparison. Five is a trend you can present to the surgeon, the wound team, or your own next plan-of-care decision. That is wound care general knowledge. The foundation everything else builds on.