Gastrointestinal Assessment Practice Scenarios for Student Nurses
Practise recognising important gastrointestinal changes, connecting symptoms with observations and fluid balance, and deciding when a patient requires further assessment or escalation.
Think before you reveal the answer
For each scenario, identify what has changed, what information you need next and whether the pattern suggests that the patient's condition may be deteriorating.
What has changed?
Identify the symptoms, observations or functional changes that are different from the patient's baseline.
What pattern is forming?
Combine gastrointestinal symptoms with fluid balance, urine output and wider physiological observations.
What needs to happen next?
Decide whether routine review, prompt senior assessment or urgent escalation is required according to local procedures.
Persistent vomiting
The situation
A patient has vomited four times since the beginning of your shift. They have taken very little fluid and say they feel increasingly weak.
Their urine output has reduced and their pulse is higher than on the previous observation set.
Clinical reasoning
- Vomiting is repeated rather than isolated.
- The patient is unable to replace fluid losses adequately.
- Urine output has fallen.
- The pulse has changed from the earlier observation.
- Increasing weakness suggests the patient's overall condition is changing.
Together these findings justify reassessment of the patient and prompt communication to the registered nurse.
Abdominal distension and vomiting
The situation
During morning care, you notice that a patient's abdomen appears more distended than it did yesterday.
The patient reports increasing abdominal discomfort and has vomited twice. They have not passed their usual bowel movement.
Clinical reasoning
New distension combined with abdominal discomfort, vomiting and altered bowel function represents a significant gastrointestinal change.
These findings do not establish a diagnosis, but they require further assessment. Review the patient systematically and escalate the change rather than waiting for the cause to become obvious.
Repeated diarrhoea
The situation
An older patient has passed repeated watery stools throughout the day. They have eaten little and are drinking less than usual.
By late afternoon their urine output has fallen and they appear more tired.
Clinical reasoning
The concern is not simply diarrhoea. The pattern is: continued gastrointestinal loss + poor replacement + falling urine output + changing general condition.
Assess hydration and observations, consider infection-prevention requirements according to local policy, and communicate the change.
Constipation with increasing symptoms
The situation
A patient has not passed a normal stool for several days. They now report increasing abdominal discomfort and poor appetite.
Their abdomen appears more distended and they later pass a small amount of loose stool.
Clinical reasoning
No. Loose stool does not necessarily exclude significant retained stool. The wider history remains important.
The combination of prolonged bowel difficulty, worsening distension, discomfort and reduced appetite should be communicated for further assessment.
High stoma output and poor intake
The situation
A patient with an established ileostomy tells you that their output has become much more watery and frequent than normal.
They have been drinking poorly and their urine output has reduced during the shift.
Clinical reasoning
- Compare current stoma output with the patient's usual pattern.
- Assess oral fluid intake.
- Consider total gastrointestinal fluid loss.
- Review urine output.
- Assess observations and overall condition.
- Escalate significant change appropriately.
Nausea and very poor oral intake
The situation
A patient has complained of nausea throughout the day. Their lunch and evening meal are almost untouched and they have taken only small amounts of fluid.
They have not vomited, but later become increasingly lethargic.
Clinical reasoning
Not necessarily. Persistent nausea can substantially reduce food and fluid intake even without vomiting.
The development of lethargy is a further change. Assess the patient's wider clinical condition rather than assuming the issue is only poor appetite.
Possible gastrointestinal bleeding
The situation
A patient tells you that their stool looked very dark this morning. Later they become light-headed when mobilising and appear pale.
Their pulse is faster than previously recorded.
Clinical reasoning
A concerning stool change combined with pallor, light-headedness and a changing pulse should not be treated as an isolated bowel observation.
Assess the patient systematically and escalate promptly according to local procedures. Do not attempt to diagnose the source independently.
The observations are changing
The situation
A patient admitted with abdominal symptoms reports worsening pain and has started vomiting.
Their respiratory rate and pulse are higher than on the previous set of observations and they look increasingly unwell.
Clinical reasoning
This is now a pattern of wider deterioration, not simply an abdominal complaint.
Use an ABCDE approach, obtain appropriate observations and escalate promptly. If urgent deterioration is suspected, emergency escalation should not be delayed while preparing a detailed handover.
Turn observations into a clear escalation
Strong clinical communication explains what has changed and why you are concerned.
State the concern
“I'm concerned because this patient's gastrointestinal symptoms have worsened during the shift.”
Describe the pattern
Give relevant symptoms, fluid losses, intake, urine output and changes in observations.
Ask for review
Clearly communicate that the patient requires further assessment or urgent review according to the situation.
Recognise → assess → connect → escalate
From individual symptoms to clinical patterns
Gastrointestinal confidence comes from connecting abdominal symptoms, bowel function, vomiting, intake, fluid losses, urine output and physiological observations rather than treating each finding separately.
Explore Clinical Confidence →