T8 · Weak immune system
Risk Long-term illness
Definition
Illness or treatment lowers the body's defenses against infection.- Chemotherapy
- HIV
- steroids
- poor nutrition
- diabetes
- Frequent infections
- slow healing
- fevers
📋 Scenario
A patient starting steroids and chemotherapy lives with a school-age child who has a cold.
Subjective (S): "My child has a cold."
Objective (O): On steroids and chemotherapy; white cell count 2.1; temperature 36.8 C; no signs of infection; lives with a school-age child.
Assessment tools for this scenario: CP-LONG Long-Term Condition Check CP-INFECT Infection Check
Validated scales to consider: Self-management review, qSOFA / sepsis screen
**CarePath diagnosis:** Weak immune system related to chemotherapy and steroids (risk factors); no signs of the problem are present yet.
**Interventions and rationale**
| Intervention | Rationale |
|---|---|
| Protect from infection. | Chemotherapy and steroids reduce the body's defenses, so keeping germs away, such as avoiding sick contacts, lowers the chance of a serious infection. |
| Hygiene. | Clean hands, mouth and skin reduce the germs that can enter the body, which matters when white cell counts are low. |
| Vaccines as advised. | Some vaccines are safe and helpful, but live vaccines can be harmful with a weak immune system, so only those advised by the team are given. |
| Monitor. | Regular checks of temperature and signs of infection find problems early, when treatment works best and before the infection spreads. |
| Teach. | Understanding precautions and warning signs helps the patient and household act early and consistently, and report a fever promptly. |
**Expected outcomes**
- No new infection.
- Follows precautions.
- Vaccines updated.
- Monitoring done.
**Linking the data to the diagnosis**
This is a risk diagnosis because no infection has developed. The patient is on steroids and chemotherapy, the white cell count is 2.1, and her temperature is 36.8 C with no signs of infection. She says, "My child has a cold," and lives with a school-age child, which raises exposure. An actual infection statement would be wrong; the weak defenses and exposure are the risk factors. The plan protects her, supports hygiene, updates vaccines as advised, monitors and teaches. The aim is no new infection, precautions followed, vaccines updated and monitoring done.
CarePath diagnosis
Weak immune system related to chemotherapy and steroids (risk factors); no signs of the problem are present yet.
Interventions and rationale
Listed in priority order.
| Intervention | Rationale |
|---|---|
| 1. Protect from infection. | Chemotherapy and steroids reduce the body's defenses, so keeping germs away, such as avoiding sick contacts, lowers the chance of a serious infection. |
| 2. Hygiene. | Clean hands, mouth and skin reduce the germs that can enter the body, which matters when white cell counts are low. |
| 3. Vaccines as advised. | Some vaccines are safe and helpful, but live vaccines can be harmful with a weak immune system, so only those advised by the team are given. |
| 4. Monitor. | Regular checks of temperature and signs of infection find problems early, when treatment works best and before the infection spreads. |
| 5. Teach. | Understanding precautions and warning signs helps the patient and household act early and consistently, and report a fever promptly. |
Expected outcomes
- No new infection.
- Follows precautions.
- Vaccines updated.
- Monitoring done.
Linking the data to the diagnosis
This is a risk diagnosis because no infection has developed. The patient is on steroids and chemotherapy, the white cell count is 2.1, and her temperature is 36.8 C with no signs of infection. She says, "My child has a cold," and lives with a school-age child, which raises exposure. An actual infection statement would be wrong; the weak defenses and exposure are the risk factors. The plan protects her, supports hygiene, updates vaccines as advised, monitors and teaches. The aim is no new infection, precautions followed, vaccines updated and monitoring done.