P18 · Sudden confusion
Actual ⚠ URGENT Emotions and mind
Definition
An abrupt change in awareness or thinking, often from infection, medicine, or acute illness.- Infection
- dehydration
- medicines
- surgery
- low oxygen
- pain
- Sudden disorientation
- restlessness
- drowsiness
- hallucinations
- symptoms that come and go
📋 Scenario
An older man becomes confused on day 2 after surgery.
Subjective (S): "Who are you? Where am I?"
Objective (O): Day 2 after surgery; sudden confusion; temperature 38.5 C; hallucinating at night.
Assessment tools for this scenario: CP-MIND Mood & Mind Screen CP-OLDER Older Adult Check CP-INFECT Infection Check
Validated scales to consider: PHQ-9, GAD-7, C-SSRS, 4AT / CAM, Mini-Cog, qSOFA / sepsis screen
**CarePath diagnosis:** Sudden confusion related to infection, as evidenced by sudden disorientation and restlessness.
**Interventions and rationale**
| Intervention | Rationale |
|---|---|
| Look for the cause. | Sudden confusion is usually a sign of an underlying problem such as infection, pain or low oxygen, so finding and treating the cause is the key to recovery. |
| Check vital signs and blood sugar. | Changes in temperature, pulse, blood pressure, oxygen or blood sugar can show infection or other reversible causes that need treatment. |
| Reorient. | Gentle reminders of place, time and people reduce fear and help him make sense of his surroundings, without arguing or confronting him. |
| Keep safe. | Confusion raises the risk of falls, pulling out tubes and wandering, so close supervision and a safe space prevent injury. |
| Avoid restraints. | Restraints increase agitation, injury and the length of confusion, so less restrictive ways to keep him safe are preferred. |
| Have family present. | Familiar faces and voices calm and orient him, which can reduce fear and agitation. |
| Report quickly. | Sudden confusion can signal a serious illness, so prompt reporting lets the doctor start treatment quickly. |
**Expected outcomes**
- Within 24-48 hours: oriented, cause treated, no falls or injuries, sleeps at night.
**Linking the data to the diagnosis**
On day 2 after surgery, the older man asks, "Who are you? Where am I?" The nurse records sudden confusion, a temperature of 38.5 C and hallucinations at night. The abrupt change and likely infection set this apart from ongoing confusion or memory problems, which develop slowly. It is an actual problem, and the nurse reports quickly. The plan aims, within 24 to 48 hours, for him to be oriented, the cause treated, no falls or injuries and sleep at night.
CarePath diagnosis
Sudden confusion related to infection, as evidenced by sudden disorientation and restlessness.
Interventions and rationale
Listed in priority order — for urgent statements the first action is to get help.
| Intervention | Rationale |
|---|---|
| 1. Look for the cause. | Sudden confusion is usually a sign of an underlying problem such as infection, pain or low oxygen, so finding and treating the cause is the key to recovery. |
| 2. Check vital signs and blood sugar. | Changes in temperature, pulse, blood pressure, oxygen or blood sugar can show infection or other reversible causes that need treatment. |
| 3. Reorient. | Gentle reminders of place, time and people reduce fear and help him make sense of his surroundings, without arguing or confronting him. |
| 4. Keep safe. | Confusion raises the risk of falls, pulling out tubes and wandering, so close supervision and a safe space prevent injury. |
| 5. Avoid restraints. | Restraints increase agitation, injury and the length of confusion, so less restrictive ways to keep him safe are preferred. |
| 6. Have family present. | Familiar faces and voices calm and orient him, which can reduce fear and agitation. |
| 7. Report quickly. | Sudden confusion can signal a serious illness, so prompt reporting lets the doctor start treatment quickly. |
Expected outcomes
- Within 24-48 hours: oriented, cause treated, no falls or injuries, sleeps at night.
Linking the data to the diagnosis
On day 2 after surgery, the older man asks, "Who are you? Where am I?" The nurse records sudden confusion, a temperature of 38.5 C and hallucinations at night. The abrupt change and likely infection set this apart from ongoing confusion or memory problems, which develop slowly. It is an actual problem, and the nurse reports quickly. The plan aims, within 24 to 48 hours, for him to be oriented, the cause treated, no falls or injuries and sleep at night.