Nursing care
Septic Shock nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated September 2026
Short answer
Septic shock is life-threatening organ hypoperfusion caused by the body's dysregulated response to infection. Early on, patients are often warm, flushed and hypotensive from vasodilation; later they turn cold and clamped down as compensation fails. Fluids start within the first hour, cultures are drawn before antibiotics, and vasopressors are added when fluids alone fail to restore perfusion.
What it is and why it happens
Sepsis begins as an infection but becomes dangerous when the immune response itself causes widespread vasodilation, capillary leak and microvascular clotting. Septic shock is the point at which this response drops blood pressure and tissue perfusion despite adequate fluid resuscitation, requiring vasopressors to maintain a mean arterial pressure typically at or above 65 mmHg.
Common sources include pneumonia, urinary tract infection, intra-abdominal infection and line-related bacteraemia, though any infection can progress. Elevated lactate reflects anaerobic metabolism in underperfused tissue and is a key marker of severity, used alongside blood pressure to guide the aggressiveness of treatment.
How it presents — what you will actually see
Early septic shock often looks deceptively stable: skin warm and flushed, extremities pink, blood pressure falling from vasodilation rather than volume loss. This is the phase clinicians call warm shock, and it can be mistaken for a patient who is simply febrile rather than in shock, because the skin does not look sick.
As the condition progresses and compensatory mechanisms fail, the picture flips: skin turns cool, pale or mottled, capillary refill slows, and peripheral pulses weaken as the body shunts blood centrally in a last attempt to protect vital organs. This late, cold, clamped-down presentation resembles other forms of shock and is a sign of advancing decompensation, not improvement.
Nursing assessment priorities
Screen with a validated tool as per facility protocol and correlate findings with vital signs: temperature above 38°C or below 36°C, heart rate above 90, respiratory rate above 20, and altered mental status are common triggers for escalation. Assess skin temperature and colour specifically, since the warm-to-cold transition is a direct marker of how far the patient has progressed.
Obtain a serum lactate and reassess it as ordered, since a falling lactate over time indicates improving perfusion and a rising or persistently elevated lactate indicates ongoing tissue hypoxia. Track urine output hourly, mental status continuously, and mean arterial pressure rather than systolic alone, since MAP better reflects organ perfusion pressure in shock.
Interventions and what to do first
Time-critical sequencing matters. Draw blood cultures, ideally from two separate sites, before the first dose of antibiotics whenever this does not meaningfully delay treatment, since antibiotics can sterilise cultures and blind the team to the causative organism. Broad-spectrum antibiotics should still be given as promptly as possible after cultures, guided by local protocol.
Begin isotonic crystalloid resuscitation within the first hour of recognition, commonly around 30 mL/kg for patients with hypotension or elevated lactate, adjusted for cardiac and renal status. If blood pressure and perfusion do not respond adequately to fluids, initiate vasopressor support, typically norepinephrine as a first-line agent, titrated to the target mean arterial pressure while fluid resuscitation continues.
Complications to watch for
Acute kidney injury is common as renal perfusion falls; monitor urine output and creatinine trends closely and report oliguria promptly. Disseminated intravascular coagulation can develop from widespread microvascular clotting, so watch for unexpected bruising, oozing from IV sites, or abnormal coagulation studies.
Acute respiratory distress syndrome can follow from both the septic process and aggressive fluid resuscitation, so monitor oxygenation and work of breathing even after fluids have improved blood pressure. Multi-organ dysfunction can progress rapidly once compensation fails, so a patient who seems to be stabilising still needs frequent, not reduced, reassessment.
Patient teaching before discharge
Patients recovering from septic shock and their families should understand that fatigue, muscle weakness and cognitive fogginess, sometimes called post-sepsis syndrome, can persist for weeks or months and are expected, not a sign that something new is wrong.
Teach recognition of infection recurrence: fever, new confusion, wound changes at any prior infection site, or reduced urination, with clear instructions to seek care promptly rather than waiting. Reinforce any prescribed antibiotic course completion, follow-up appointments for organ function that was affected, such as kidney studies, and realistic expectations for a gradual physical recovery.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our cardiovascular practice questions are the closest set to what this page covers.
Common questions
Why do septic shock patients sometimes feel warm despite low blood pressure?
Early septic shock causes widespread vasodilation, which drops blood pressure while keeping skin warm and flushed because vessels are dilated rather than constricted. This warm phase can mask how serious the shock is.
Should blood cultures be drawn before or after antibiotics in septic shock?
Blood cultures should be drawn before the first antibiotic dose whenever this does not significantly delay treatment, since antibiotics can sterilise the culture. Antibiotics should still follow as promptly as possible afterward.
How much fluid is given in the first hour of septic shock treatment?
A common target is around 30 mL/kg of isotonic crystalloid within the first hour for patients with hypotension or elevated lactate, adjusted for individual cardiac and renal status. Response is then reassessed continuously.
What is done if fluids do not correct septic shock?
Vasopressor support is started, typically norepinephrine as a first-line agent, titrated to maintain a target mean arterial pressure while fluid resuscitation continues alongside it. This defines the transition from fluid-responsive sepsis to septic shock.
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