These presentations are among the highest-yield clinical scenarios for JCF interviews. Sepsis in particular is a topic where the panel expects precise, protocol-driven answers.
Sepsis — The Sepsis Six Bundle
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection (Sepsis-3 definition, Singer et al., JAMA 2016). The UK Sepsis Trust estimates approximately 48,000 deaths per year in the UK are attributable to sepsis. In NHS hospitals, the Sepsis Six care bundle is the standard approach for initial management. All six elements should be completed within one hour of sepsis being identified. The Sepsis Six components are:
- Give high-flow oxygen (target SpO2 ≥94%, or 88–92% in COPD)
- Take blood cultures (before antibiotics, but do not delay antibiotics to obtain cultures)
- Give IV antibiotics (broad-spectrum, per trust antibiotic guidelines)
- Give IV fluid challenge (500mL–1000mL crystalloid bolus; if systolic BP <90 or lactate >4, consider 1500–2000mL)
- Check lactate (venous or arterial blood gas — lactate ≥2 mmol/L indicates significant sepsis; lactate ≥4 mmol/L indicates septic shock with approximately 40% mortality)
- Measure urine output (consider urinary catheter, target ≥0.5mL/kg/hr)
NEWS2 in sepsis: The National Early Warning Score 2 (NEWS2), developed by the Royal College of Physicians and endorsed by NHS England, is the standard tool for detecting clinical deterioration. It scores six physiological parameters: respiratory rate, oxygen saturations, systolic blood pressure, pulse rate, level of consciousness (using the ACVPU scale: Alert, Confusion, Voice, Pain, Unresponsive), and temperature. A NEWS2 score of 5 or more should trigger an urgent clinical review. A score of 7 or more should trigger an emergency response, typically involving the critical care outreach team. In your interview answer, mentioning NEWS2 demonstrates current NHS practice awareness.
Escalation: “If the patient remains haemodynamically unstable despite initial fluid resuscitation, I would escalate to the medical registrar and consider referral to critical care for vasopressor support. I would also ensure source control is addressed — for example, requesting urgent imaging if an intra-abdominal source is suspected.”
Upper GI Bleeding
Upper GI bleed is a common scenario particularly for medical and emergency medicine JCF posts. Key management: A–E approach, two wide-bore IV cannulae (14G or 16G), aggressive fluid resuscitation, crossmatch at least 2 units of packed red cells (activate major haemorrhage protocol if haemodynamically unstable), correct coagulopathy (withhold anticoagulants, consider vitamin K if on warfarin, consider tranexamic acid), IV proton pump inhibitor (e.g., omeprazole 80mg IV bolus), and urgent gastroenterology referral for endoscopy. Risk stratify using the Glasgow-Blatchford Bleeding Score (GBS) — this is the recommended pre-endoscopy scoring system per NICE guideline NG141 (2019). A GBS of 0 is low-risk and may be suitable for outpatient management; all other scores warrant admission. The Rockall Score is used post-endoscopy to predict rebleeding and mortality risk.
Diabetic Ketoacidosis (DKA)
DKA is a medical emergency characterised by hyperglycaemia (blood glucose usually >11 mmol/L), ketonaemia (blood ketones >3 mmol/L or significant ketonuria), and metabolic acidosis (venous pH <7.3 and/or bicarbonate <15 mmol/L). Management follows the Joint British Diabetes Societies (JBDS) DKA guideline: IV 0.9% sodium chloride (1L in first hour, then adjusted to clinical status), fixed-rate IV insulin infusion (0.1 units/kg/hour), potassium replacement (guided by serum potassium — do not give potassium if K+ >5.5 mmol/L), regular monitoring of blood glucose, ketones, potassium and venous blood gas (hourly initially), and continue long-acting basal insulin if the patient was already on it. Key escalation triggers: pH <7.1, GCS <12, potassium abnormalities, or failure to improve after initial management.
Anaphylaxis
Anaphylaxis management follows the UK Resuscitation Council guidelines: remove the trigger if possible, call for help, give adrenaline IM (0.5mg of 1:1000 solution into the anterolateral thigh — this is the most important intervention), lie the patient flat with legs raised (unless respiratory distress), give high-flow oxygen, give IV fluid bolus (500mL–1000mL crystalloid), and consider IV chlorphenamine 10mg and IV hydrocortisone 200mg as second-line treatments. Repeat adrenaline at 5-minute intervals if no improvement. All patients should be observed for a minimum of 6–12 hours post-anaphylaxis due to the risk of biphasic reaction. Arrange serum tryptase levels (as soon as possible after the event, and at 1–2 hours) and refer to an allergy clinic.
- Resource: Sepsis, GI Bleed & Metabolic Emergency Summary Cards with key drug doses and thresholds.