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Sepsis bundle

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In one line

·Sepsis is an infection that has triggered a harmful immune reaction, causing organs to fail — measured as a SOFA score of 2 or more.

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Normal physiology

·Your immune system is like a guard dog: it patrols your body, barks at germs, and bites just hard enough to kill invaders without tearing up your own house. Keep that picture in your head, because every weird sepsis finding is what happens when the guard dog goes berserk.

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What goes wrong

·In sepsis, the immune system dumps way too many alarm chemicals into the blood, and those chemicals damage the lining of blood vessels everywhere — not just at the infection site. Vessels leak fluid, widen too much, and tiny clots form. Blood pressure drops, organs starve for oxygen, and the body spirals.

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Hallmark signs

·Fast breathing (22 breaths per minute or more)
·Confusion or being much sleepier than usual
·Low blood pressure (systolic, the top number, below 100)
·Very high or very low body temperature (above 101°F or below 96.8°F)
·Heart racing (more than 90 beats per minute)
·Making very little urine or none at all
·Skin that is cold, clammy, or has purple blotches (mottling)
·Trouble breathing or feeling short of air

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Red flags · escalate now

·Systolic blood pressure below 90 despite giving fluids through an IV — the patient may need medicines (vasopressors like norepinephrine) to squeeze blood vessels and raise pressure.
·Urine output less than 0.5 mL per kilogram per hour for two hours — kidneys are failing and the patient may need dialysis (a machine that cleans the blood).
·Lactate (a waste chemical that builds up when cells burn fuel without enough oxygen) above 4 mmol/L — tissues are starving for oxygen and death risk is very high.
·New confusion, extreme sleepiness, or inability to wake the patient — the brain is not getting enough blood and oxygen.
·Breathing rate above 30 or needing a machine to breathe (mechanical ventilation) — the lungs are failing.

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Workup

·Blood lactate
·Blood cultures (at least two sets, from different sites, before antibiotics)
·Complete blood count (CBC) with differential
·Basic metabolic panel (BMP) and creatinine
·Procalcitonin
·Chest X-ray
·Urinalysis and urine culture
·Imaging for source (CT abdomen/pelvis, ultrasound, etc.) if source unclear

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Treatment

·Draw blood cultures (at least two sets) and check lactate before giving antibiotics
·Give broad-spectrum IV antibiotics within 1 hour of recognizing sepsis
·Give 30 mL per kg of IV crystalloid fluid (normal saline or lactated Ringer's) within 3 hours
·Start norepinephrine (a vasopressor) if MAP stays under 65 mmHg after fluids
·Find and control the infection source (drain abscess, remove infected catheter or hardware, surgery for burst bowel or dead tissue)
·Add IV hydrocortisone (200 mg per day in divided doses) if shock does not improve despite fluids and norepinephrine
·Recheck lactate within 2–4 hours if the first lactate was elevated

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NCLEX trap

·Draw blood cultures BEFORE antibiotics. Cultures need live germs to tell you what is growing. Once antibiotics kill germs, cultures come back negative and you will not know what to treat. In sepsis, cultures + lactate come first; antibiotics within 1 hour after cultures are drawn.
·In sepsis, give 30 ml/kg of fluid within 3 hours, then STOP and reassess. If the patient still has low blood pressure, use vasopressors (drugs that squeeze blood vessels) instead of more fluid. Septic shock needs both fluids AND squeezers — not just one or the other.
·In sepsis, fever is not the enemy — infection is. Fever helps the immune system fight sepsis. Cool the room if needed, but do not chase the fever itself. Treat sepsis by finding and killing the infection and supporting organs.
·Use SOFA scoring, not blood pressure alone. Sepsis is infection + organ dysfunction (SOFA ≥2). Even with normal blood pressure, if lactate is high or there is confusion or low urine output, start lactate, cultures, and antibiotics now. Wait too long, and the patient tips into septic shock.
·Medicine treats the emergency (fluids, vasopressors, antibiotics), but only surgery or drainage fixes the source. If there is an abscess, infected line, or dead tissue, it must come out. Antibiotics alone will fail if the source is still there.
·Organ recovery is slow. Keep supporting the patient until lactate stays low, urine output is good, and consciousness returns. Wean vasopressors slowly over hours to days. Sepsis is a marathon, not a sprint.

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