Nursing care
Delegating Unstable Patients, explained for the bedside and the exam
Written and reviewed by Dana Whitfield, RN, MSN · 5 min read · Updated September 2026
Short answer
An unstable patient never goes to an LPN or UAP. Stability is judged by current status, not by how the patient looked an hour ago, so a patient who was fine on the last round but is now showing new signs of deterioration must stay with the RN. Delegation follows the patient's condition right now, not their trend line.
Defining it precisely
An unstable patient is one whose condition could change quickly and whose response to that change requires ongoing assessment and clinical judgement — new-onset chest pain, a falling oxygen saturation, an escalating fever with altered mentation, a post-op patient with rising heart rate and falling blood pressure. Instability is a present-tense state, assessed at the moment the assignment is made.
The delegation rule that follows is direct: unstable patients are RN patients. An LPN's scope covers patients with predictable, stable trajectories where the plan of care is already established. A UAP's scope covers non-clinical tasks on any patient but never the ongoing assessment an unstable patient needs. Neither role is equipped to catch and respond to rapid deterioration, which is the entire risk an unstable patient carries.
The exceptions that matter
There is no exception that lets an unstable patient go to an LPN, but there are exceptions worth naming because exam writers use them to test whether you understand the boundary. An LPN can be assigned to a stable patient who happens to be medically complex — multiple comorbidities, a long medication list, a wound vac — because complexity of history is not the same as current instability.
The other side of the exception: a patient who is unstable but whose care has been fully handed off to a higher level of care, such as a patient being transferred to ICU and already accompanied by the rapid response team, is no longer the med-surg RN's sole responsibility to triage. That is a handoff, not a delegation decision, and it should not be confused with assigning an LPN to manage the instability.
Using it to prioritise
When an RN is handed four patients at the start of a shift, acuity drives both prioritisation and delegation in the same direction. The most unstable patient gets the RN's own first assessment and stays under RN care throughout the shift. Stable patients with routine tasks — vital signs, hygiene, ambulation — can be assigned to LPNs and UAP, freeing the RN's time for the patient who needs it.
This is also how an RN should reprioritise mid-shift. If a stable patient assigned to an LPN develops a new symptom the LPN reports — say, new shortness of breath — the RN reclaims that patient immediately. The assignment made at 7am does not lock in for the rest of the shift; it moves with the patient's condition.
Traps in exam wording
The classic distractor is a stem that includes the line 'the patient was stable an hour ago' or 'vital signs were normal at the last check,' then describes new findings — tachycardia, confusion, dropping saturation — in the current moment. Test-takers who anchor on the earlier stable reading choose to delegate. The correct answer follows the current data, not the history.
A second common trap dresses up an unstable patient as low-acuity by focusing on a single reassuring detail, such as a normal blood pressure, while burying an abnormal finding elsewhere in the stem, like altered level of consciousness or a new arrhythmia. Read the full data set before judging stability. One normal number does not offset one dangerous one.
Examples from practice
A patient six hours post-abdominal surgery had stable vitals at the last check. On this round, heart rate has climbed from 88 to 118 and blood pressure has dropped from 128/76 to 96/58. Despite the earlier stable reading, this patient is now unstable and must be reassessed and managed by the RN, not handed to the LPN covering routine post-op checks.
Contrast that with a patient three days into recovery from pneumonia, afebrile, oxygen saturation steady at 96 percent on room air, tolerating a regular diet. This patient's trajectory is predictable and their current status stable, so ambulation, vital sign checks, and routine hygiene can appropriately go to an LPN or UAP.
Summary
Instability is decided by the patient's condition at the moment of the assignment, not by their history over the shift. An unstable patient — one with an unpredictable trajectory needing ongoing assessment — stays with the RN regardless of how calm they looked earlier.
Watch for stems that lean on a past stable reading to justify delegating a patient who is decompensating now. That gap between 'was fine' and 'is now' is the distractor, and the safe, tested answer always follows the present data.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our prioritization and delegation practice questions are the closest set to what this page covers.
Common questions
Can an LPN take a patient who is stable but has a complicated history?
Yes. A complex history — multiple diagnoses, several medications, a chronic wound — does not make a patient unstable if their current condition is predictable and controlled. Delegation follows present acuity, not the length of the chart.
What counts as new signs of instability that should pull a patient back to the RN?
Any acute change from baseline: a significant shift in vital signs, new or worsening pain, altered mental status, a new arrhythmia, or a sudden drop in oxygen saturation. Any of these should trigger the RN to reassess and reclaim the patient, even if an LPN or UAP was assigned earlier.
Why does the NCLEX keep mentioning that the patient 'was fine' earlier in the shift?
That detail is a distractor designed to test whether you delegate based on history or on current status. The safe answer always follows the most recent assessment data, not an earlier reassurance.
Does a stable patient being transferred to a higher level of care still need RN-only management?
Once a rapid response or transfer team has taken over, the situation shifts from a delegation decision to a handoff. The primary RN remains accountable for communication and documentation, but the ongoing acute management is no longer a delegation choice between RN and LPN.
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