褥瘡（壓傷）預防與照護指南：臥床長輩家屬必讀 Pressure Ulcer Prevention and Care: A Guide for Families of Bedridden Elders

Many families assume a pressure ulcer (bedsore) is something that only happens after months of neglect. The truth is harder: when skin is compressed between bone and mattress and blood flow is cut off, tissue damage can begin within hours. The highest-risk spots are the sacrum (tailbone), heels, and hips — and for someone lying on their side, even the ears. Prevention is always easier than treatment, so here is what nurses actually do at the bedside, translated into things a family can do at home.

The First Warning Sign: Redness That Won't Blanch

When you turn your parent and see a red patch over a bony area, press it gently with a finger for three seconds and release. Healthy skin briefly turns white, then pinks up again. If the redness does not turn white under pressure and does not fade, that is a stage 1 pressure injury — the skin is still intact, but the tissue underneath is already starved of blood. In plain language, the four stages are: stage 1, persistent non-blanching redness; stage 2, a blister or shallow open wound; stage 3, a deep wound reaching into the fat layer; stage 4, exposed muscle, tendon, or bone. Under continued pressure, a stage 1 injury can deteriorate to stage 3 in a matter of days.

The Five Pillars of Prevention

1. Reposition every two hours. Use a 30-degree side-lying tilt rather than a full 90-degree side position, which puts the hip bone directly under load. Place a pillow between the knees and another under the calves so the heels float completely off the mattress.
2. Inspect the skin at every turn. Check the sacrum, heels, hips, shoulder blades, and ears. Any non-blanching redness means that spot must be kept completely pressure-free until it resolves.
3. Keep skin clean and dry. Change incontinence products promptly — moist skin breaks down far more easily. Use moisturizer on dry, flaking skin, but never rub red areas vigorously.
4. Protect nutrition and hydration. Wounds do not heal in a malnourished body. Adequate protein and fluids are as much a part of pressure injury prevention as any cushion or schedule.
5. An air mattress helps — but never replaces turning. An alternating-pressure air mattress redistributes load and buys time between turns. What it cannot do is change body position or fully offload an area that is already red. Buying an air mattress and then stopping the turning schedule is the most common and most dangerous misunderstanding we see.

Four Mistakes Families Make

• Massaging red spots. The instinct to "rub it to improve circulation" actually grinds already-damaged tissue and makes the injury worse. The correct response is offloading, not massage.
• Using donut cushions. A ring cushion concentrates pressure along its rim and chokes off blood flow around the very area it is meant to protect. International pressure injury guidelines specifically advise against them.
• Waiting on "small" wounds. A patch of broken skin the size of a coin often hides much deeper damage underneath. Days of waiting can turn a stage 1 injury into a stage 3 wound.
• Applying DIY ointments to open wounds. Over-the-counter creams and folk remedies can worsen a wound or mask the early signs of infection. Once the skin is broken, dressing choice and any medication should follow the medical team's instructions.

When to Get Professional Help

Any open skin, blackened tissue, wound odor, or fever takes this out of home-remedy territory — the wound needs clinical assessment. Pressure ulcers heal over weeks to months, and they heal through regular, skilled dressing changes. Wound assessment and dressing changes are core nursing skills, not optional extras.

One honest observation from years of home visits: when a pressure ulcer develops at home, the problem is rarely a missing cream. It usually means the care arrangement is failing — most often, the turning schedule has quietly collapsed, especially overnight. Fixing the schedule matters more than anything you can buy at a pharmacy. Every caregiver in Alma's private nursing service is a nationally licensed RN, serving Taipei, New Taipei, Taichung, and Kaohsiung. Our 24-hour care (NT$12,600/day) is staffed by two nurses in shifts — which means overnight repositioning actually happens instead of merely appearing on a care plan. Day shifts are NT$6,000 and night shifts NT$6,600, fixed and transparent. Reach us on LINE at @205tyguj or hello@caredbyalma.com.

FAQ

Do air mattresses work? Do we still need to turn?

Yes, they work — an alternating-pressure air mattress reduces risk and is a worthwhile investment for anyone bedridden. But it cannot replace turning. The mattress redistributes pressure; it cannot fully offload an area that is already red, and it cannot change body position. The complete answer is an air mattress plus repositioning every two hours.

What ointment should I put on a pressure ulcer?

While the skin is intact, the priority is offloading and keeping the area clean and dry — not creams. Once the skin is broken, dressing selection and any medication should be decided by the medical team after assessment. Wounds of different depths and exudate levels are managed completely differently, and self-prescribed ointments on open wounds can delay healing or worsen the injury.

Can I massage a red area to improve circulation?

No. Redness that does not blanch means the tissue underneath is already damaged, and massage or vigorous rubbing deepens that damage. Keep the area completely pressure-free and check it at every turn; with proper offloading, the redness typically fades within a day or two.

Do we really have to turn them every two hours overnight?

Yes. Pressure injuries do not pause at night — six to eight unbroken hours of pressure is exactly how many home pressure ulcers begin. If no one in the family can realistically wake to turn every two hours, that is the signal to arrange overnight or 24-hour professional care, not a problem to push through on willpower.