The Sepsis Hour One Bundle as a Bedside Checklist
The sepsis bundle looks simple on a laminated card. Cultures, antibiotics, fluids, lactate, reassess. Then you are standing over a 74 year old with a heart rate of 118, a pressure of 88/50, and a nurse who has three other patients, and the card is not the problem. The problem is sequence, delegation, and the fear that you will drown the patient or miss the window. This is the hour one bundle the way it actually runs at the bedside. It follows current Surviving Sepsis Campaign guidance in concept, but your hospital has its own sepsis pathway with its own order set and timers. Read that pathway. It governs, not this post.
Recognize sepsis before the page says sepsis
The page almost never says sepsis. It says "hypotension," "tachycardia," "altered mental status," or my favorite, "patient just doesn't look right." From an experienced nurse, that last one outweighs most vital signs. The bundle clock starts when sepsis is recognized, so the most important skill is not managing sepsis but suspecting it early.
Suspect it in the new confusion in the elderly patient with a Foley, the postoperative patient who is tachycardic and "anxious," the cirrhotic with abdominal pain, the dialysis patient with a line, the neutropenic patient with a temperature of 38.1 who otherwise looks fine. Fever is optional, and hypothermia is worse. A "normal" pressure of 110/70 in a lifelong hypertensive is a 40 point drop.
When you walk in, do the thirty second exam: mentation, respiratory rate, skin. Is the patient making sense? Is the respiratory rate above 22 and nobody charted it? Are the knees mottled, the hands cold, the capillary refill sluggish? Those three things tell you more about perfusion than the monitor does. If any of them is wrong and there is a plausible infection, you are running the bundle. Do not wait for the lactate to decide the patient is sick. It is the same discipline as every call about hypotension and fever at 3 a.m.: go see the patient, and let the bedside overrule the chart.
The hour one moves, in the order you actually do them
The bundle is taught as a list. At the bedside it is a choreography, mostly in parallel. Here is the order that works.
- Access and labs first. Two large bore IVs. While the second goes in, draw everything: blood cultures times two from separate sites, lactate, CBC, chemistry, LFTs, coags. Cultures before antibiotics, with one caveat: cultures must not meaningfully delay antibiotics. If cultures are proving hard to get, give the antibiotics. A dead patient with pristine culture data is not a win.
- Order the antibiotics now, not after the workup. Early broad empiric coverage based on the suspected source, narrowed later. You will never regret starting broad and de-escalating at 48 to 72 hours. You will regret the elegant narrow choice that missed the organism. Know your hospital's empiric recommendations, because local resistance patterns beat anything you memorized elsewhere.
- Start crystalloid. The classic teaching is 30 mL/kg of balanced crystalloid for hypotension or an elevated lactate, and that remains the standard starting point on most pathways. A starting point, not a commandment. More on the scary patient below.
- Send the lactate and plan to repeat it. One lactate is a snapshot. The trend is the story. If the first one is elevated, a repeat within a few hours is part of essentially every pathway.
- Ask the source control question out loud. Antibiotics do not drain an abscess, remove an infected line, or relieve an obstructed, infected kidney. If the source needs a procedure, the call to surgery, IR, or urology is a bundle element, and the one with the tightest real world time pressure.
If the working diagnosis is pneumonia, run the numbers with the CURB-65 calculator to frame disposition, but remember that a septic patient with pneumonia has already declared one. Scores support judgment, they do not replace it.
What to delegate and what only you can do
You cannot personally place two IVs, hang fluids, draw cultures, and call pharmacy in sixty minutes, and you are not supposed to. Run it like a small code: assign, verify, close the loop.
Delegate the IVs, culture draws, fluid administration, and timing documentation to nursing, and ask the charge nurse for a second set of hands early. Delegate antibiotic mixing and delivery to pharmacy, and tell them it is for suspected sepsis so it gets prioritized. What only you can do: examine the patient, commit to the diagnosis, choose the empiric regimen, decide the fluid strategy, make the source control call, and decide the disposition. Those decisions are the physician job. Everything else is a task, and tasks can be shared. The mistake juniors make is doing tasks while the decisions wait.
Fluids in the patient you are scared to fill
Everyone is brave with fluids in the 45 year old with pyelonephritis. The fear shows up with the dialysis patient, the EF of 20 percent, the tight aortic stenosis. The honest answer: septic patients with heart failure still die of underresuscitation, and they also drown. The way out is not a smaller number memorized in advance. It is smaller aliquots with more frequent reassessment.
Give 250 to 500 mL boluses instead of a liter at a time. Reassess after each one: pressure, heart rate, mentation, urine output, lung exam, oxygen requirement. If you have the skill and the machine, look at the IVC or the lungs with ultrasound. If the pressure is not responding after reasonable crystalloid, stop chasing it with water. That patient needs a vasopressor and a higher level of care, and norepinephrine through a good peripheral IV while a central line is arranged is accepted practice in most shops now, but confirm with your ICU. The worst move is the timid middle path: enough fluid to cause pulmonary edema, not enough to restore perfusion, given over four hours without a single reassessment.
Call the ICU early, not when you are failing
The right time to call the ICU is when you first think "this patient might need the ICU." Not after the second liter fails. Not when the pressure is 70. Persistent hypotension after initial fluids, a climbing lactate, a rising oxygen requirement, or fading mentation: any of these is a phone call. If your hospital has a rapid response system, use it without embarrassment. I wrote about this in the guide to rapid response teams, and the principle is the same here: the call you feel slightly silly making is usually the call you should have made an hour ago. The intensivist would rather meet a patient who turns the corner on the floor than one who just arrested. The deeper version of what happens after the handoff, pressors, lines, and the first ICU night, lives in the critical care rotation guide and the main sepsis and septic shock page.
Reassessment is the forgotten bundle element
Every element of the bundle gets charted except the one that changes management: going back. The bundle is not finished when the orders are in. It is finished when you have gone back after the fluids and looked. Repeat the exam, check the repeat lactate, ask the nurse about urine output. A falling lactate in a patient who is warm and making urine is a battle you are winning. A flat or rising lactate despite fluids and antibiotics means something is wrong: the source is not controlled, the coverage is wrong, or the patient needs pressors and an ICU bed. Put the reassessment on your own timer, a phone alarm if you have to. Nobody will page you to say the patient is quietly not improving.
Documentation that protects the patient and you
Sepsis charting has two audiences: the next clinician and, occasionally, a lawyer. Serve both with time stamps and reasoning. Write when sepsis was recognized, the suspected source, when cultures were drawn, when antibiotics were ordered and given, what fluid was given and why you chose that volume, and what the reassessment showed. If you gave less than 30 mL/kg because of heart failure or dialysis, say why. "Limited initial resuscitation to 1 liter given EF 20 percent, reassessing after each 500 mL, low threshold for early norepinephrine" is defensible medicine. "Fluids given" is not. Document the ICU conversation, who you spoke with, and the plan. The chart should let a stranger reconstruct your hour. That protects the patient tonight and you in two years.
The checklist, compressed
Suspect early. Two IVs, cultures times two, lactate, labs. Broad antibiotics now, cultures first unless they cause delay. Crystalloid at 30 mL/kg as the classic starting point, smaller aliquots in the fragile patient. Source control question out loud. Repeat the lactate. Go back to the bedside. Call the ICU when the thought first occurs to you. Write down the times and the reasoning. And before any of this, pull up your institution's sepsis pathway, because that document, not this one, is your actual protocol.
If you want this drilled into you before the boards or your ICU month, that is what the board review question bank is built for, and the membership adds the full set of practice exams, protocols, and clinical guides in one place. The bundle is easy to recite and hard to run. Reps make it reflex.
Where HistoryandPhysical.net fits in
Hour one is a checklist. Hours two through forty eight are where the patient is actually managed.
- Free guides for the whole course. The sepsis bundle, IV fluids, antibiotic coverage and duration and de escalation.
- Calculators that settle the arguments. CURB-65 and the rest of the risk scores, free, on a phone, showing their working.
- Infectious disease and critical care banks. A 120 question ID board review bank and a critical care bank, each with full explanations.
- Evidence, cited. The Evidence tool leads with the guideline when one covers your question, and names the body and the year.
The guides and calculators are free forever. The banks are $10 a month or $59 a year at the founding rate, refundable within 30 days.
Keep going with Alo Academy
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