01Principles and purposeThe professional or clinical skill and the decisions it supports.
Acute surgical assessment has two linked tasks: keep the patient physiologically safe and identify an underlying problem that may need an intervention. These tasks proceed together. A meticulously completed abdominal history is of little value if an obstructed airway has been overlooked, while a transiently improved blood pressure does not establish that a bleeding vessel or leaking anastomosis has been treated. The useful endpoint is a coherent assessment that connects current instability, plausible mechanisms, immediate treatment and a time-sensitive definitive plan.
The setting changes the prior probabilities. A patient before surgery may have perforation, obstruction, ischaemia or an unrelated medical illness. After surgery, the operation and elapsed time add possibilities such as haemorrhage, respiratory compromise, anastomotic leakage, urinary retention and medication effects. They do not exclude the ordinary causes of collapse. Ask what was expected for this patient at this time and what has changed. In a clinical station, demonstrate that reasoning aloud; a long unprioritised differential cannot substitute for recognising deterioration and asking for help.
Key points
- Identify the immediate physiological threat before deciding which abdominal diagnosis best explains it.
- Assess and treat airway, breathing and circulation sequentially while colleagues obtain observations, access and relevant records.
- Establish the procedure performed, postoperative day, trajectory and treatments already given; a change from baseline may be more informative than one value.
- Look for concealed bleeding, infection, obstruction and non-surgical cardiopulmonary causes rather than anchoring on the ward label.
- Request tests that alter the next decision, while obtaining senior advice early for possible operative or radiological source control.
- Record a working diagnosis, important alternatives, treatment response and the named clinician responsible for the next review.
02Situations and prioritiesThe context, relevant information and actions that matter most.
Observe whether the patient can speak, the work of breathing, skin perfusion and engagement with the surroundings. Ask the bedside nurse what prompted the call. If the patient is unexpectedly drowsy after an opioid, assess ventilation and airway protection immediately rather than assuming normal postoperative sleep. A pulse oximeter can look reassuring during supplemental oxygen despite inadequate ventilation.
A preserved blood pressure can coexist with impaired tissue perfusion. Consider the trajectory of pulse, capillary refill, mental state and urine production alongside the pressure. In a bleeding patient, sympathetic compensation may precede hypotension. In another patient, a low usual pressure may make an isolated number less informative. Describe the combined pattern and avoid a binary stable/unstable label without supporting observations.
Identify the operation, indication, approach, relevant findings and complications, estimated blood loss, drains, vascular access and postoperative instructions. Review the actual operation record when available. A new bowel anastomosis, vascular reconstruction or neck operation changes which complication needs urgent exclusion. Ask about anticoagulants, steroids, diabetes medicines and allergies because these can change both the cause and the safety of initial treatment.
A comfortable appearance after analgesia does not negate new tachypnoea or circulatory failure. Conversely, distressing pain can occur before striking observations. Map the pain onset, site, radiation and progression, then relate it to examination and organ dysfunction. Severe pain with unexpectedly modest abdominal findings should keep ischaemia and other dangerous causes in consideration, particularly when the trajectory is worsening.
A relative may identify new confusion before a numerical score changes; a nurse may recognise that the patient is much quieter than usual. Treat that information as clinical evidence, establish a baseline and examine the patient. Delegating tasks works best when each request has a named recipient and an acknowledgement, so two people do not assume that the other has called the registrar.
03Assessment and interpretationHow to gather information, assess the situation and recognise uncertainty.
Consider the information, its meaning and its limitations before deciding what follows.
- 01
Immediate observations and bedside glucose - Why
- Define the physiological problem and identify reversible causes without leaving the bedside.
- Interpretation and limitations
- Record respiratory rate, saturation with oxygen delivery, pulse, blood pressure, temperature and conscious level, and calculate the local early warning score accurately. Check glucose in altered consciousness. Interpret the score alongside clinical concern; neither a low total nor one plausible explanation for an abnormality removes the need to assess a deteriorating patient.
- 02
Blood gas and targeted blood sampling - Why
- Assess perfusion, acid-base disturbance and likely treatment requirements while obtaining vascular access.
- Interpretation and limitations
- Lactate can support recognition of illness and provide a trend, but does not diagnose the cause or exclude early serious disease when normal. Select haemoglobin, platelets, renal profile, inflammatory markers, coagulation and blood-bank samples according to the suspected problem. In probable infection obtain cultures when feasible without materially delaying necessary antimicrobial treatment.
- 03
Focused examination and chart reconciliation - Why
- Connect the physiological pattern with a treatable cause and check whether recorded care occurred.
- Interpretation and limitations
- Examine the chest, abdomen, operative sites, drains and relevant limbs; review fluid charts, medication administration and recent results. An empty drain does not prove absence of internal bleeding. Compare requested treatments with documented administration, because a prescription on the chart may never have reached the patient.
- 04
Imaging agreed with the relevant senior team - Why
- Answer a specific anatomical question when the result can guide intervention.
- Interpretation and limitations
- State whether the concern is bleeding, obstruction, perforation, collection or another process. The patient must be safe enough for transfer, with suitable monitoring and escort. An imaging request does not replace a surgical referral; in severe instability the decision about theatre or other intervention may precede a complete imaging work-up.
04Worked approachesCases with ordered reasoning, an action and a check of the outcome.
01Worked case: postoperative deteriorationRecognise a change that needs actionSix hours after abdominal surgery, a previously alert adult becomes confused. Pulse has risen from 84 to 122/min, systolic pressure has fallen from 132 to 100 mmHg and the nurse reports a new oxygen requirement. The wound dressing is dry.+
- 1Call for immediate senior assistance and begin ABCDE assessment. Allocate monitoring and vascular access while personally checking airway, ventilation and perfusion; do not send the patient unaccompanied for a routine chest radiograph.
- 2Frame the differential around the actual threats: concealed haemorrhage, respiratory failure, infection and cardiopulmonary events. A dry dressing excludes neither intraperitoneal blood loss nor another concealed source. Obtain the operation and anaesthetic records without interrupting treatment.
- 3Collect targeted blood and blood-bank samples, review drugs and examine the chest, abdomen and drains. Provide oxygen and cause-directed resuscitation, and activate the major haemorrhage pathway if ongoing bleeding is suspected from the clinical assessment.
- 4The immediate decision is urgent joint surgical and anaesthetic review in a monitored setting, with definitive investigation or intervention determined there. A normal early haemoglobin, if returned, would not be permission to defer that review.
- 5Verify that the call has been accepted, repeat the physiological assessment after interventions and document which measurements improve or worsen. Hand over the remaining diagnostic uncertainty and the next decision deadline, not merely the list of tests sent.
02Parallel assessmentObtain a focused surgical historyThe initial physiological threats have been addressed sufficiently to obtain further information at the bedside.+
- 1Ask about onset and progression, vomiting, bowel function, bleeding, urinary symptoms and relevant reproductive history. Use the likely mechanism to focus detail while checking for important alternatives.
- 2Reconcile comorbidity, previous operations, usual function, prescribed and non-prescribed medicines, allergies and the last oral intake. Where the patient cannot answer, obtain collateral information and state its source.
- 3Present a short synthesis that includes the time course, current organ dysfunction, leading explanation and dangerous alternatives. Explain what information would change the plan rather than reciting every normal finding.
03Reassessment and dispositionMake the next stage explicitInitial treatment has produced partial improvement but the cause and safest destination remain unresolved.+
- 1Repeat the examination and observations against the pretreatment baseline. Distinguish a real improvement in perfusion or breathing from a single altered numerical value.
- 2Agree the required observation frequency, senior review, imaging access and location of care. Consider whether the current ward can actually provide the interventions and monitoring required.
- 3Assign responsibility for pending results and deterioration triggers. Explain the plan to the patient when possible and provide a concise handover to the receiving team with acknowledgement.
05Feedback, follow-up and evidenceReview outcomes, seek feedback and identify what to improve.
- Record observation times and the time of each intervention so that the treatment response can be interpreted; a chart without timing can obscure a rapidly worsening trajectory.
- When oxygen is adjusted, record both the delivery device and saturation. A similar saturation achieved with much more oxygen represents worsening support requirements.
- Review urine production over a defined interval and confirm the collection method. A reported low hourly volume requires clinical interpretation rather than an automatic fluid prescription.
- Follow every urgent investigation through to a clinical decision. A scan report in the record is not a completed safety process if no responsible clinician has read and acted on it.
06Special situationsVariants, exceptions and circumstances that change the usual approach.
Shared mechanism, different treatment
Hypotension is a description, not a diagnosis. Blood loss, vasodilatation, ventricular failure and impaired cardiac filling can all produce it, yet the safest definitive actions differ. State which mechanism the examination currently supports and actively search for evidence that would challenge it.
Assessment under time pressure
For an oral or practical assessment, prioritisation is demonstrated by the order of actions. Opening with help, ABCDE and the physiological threat is stronger than naming an uncommon surgical diagnosis while ignoring hypoxia. After stabilisation, return to the local examination and explain what it adds.
Avoid premature closure
A plausible postoperative complication can coexist with a second process. For example, pain may contribute to tachycardia while internal bleeding explains deteriorating perfusion. Reassess whether the proposed diagnosis accounts for the complete pattern and subsequent response.
Respect and decision making
Explain urgent actions in short understandable sentences whenever the patient can participate. If confusion limits engagement, treat reversible causes and seek the relevant decision-making support. Emergency treatment and thoughtful communication can occur together rather than being treated as competing tasks.
07Common pitfallsFrequent interpretation and management errors.
- 01
Completing a long admission form before addressing a failing airway or circulatory deterioration reverses the clinical priorities.
- 02
Using the word stable without documenting oxygen requirement, perfusion, consciousness and their trends can conceal significant deterioration.
- 03
Attributing every postoperative abnormality to the operation risks missing myocardial, pulmonary, metabolic or medication-related illness.
- 04
Assuming that requesting a scan or leaving a voicemail transfers responsibility can create a dangerous gap before another clinician accepts care.