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Sample medical chronology: a post-op infection, entry by entry

Sample medical chronology for a post-op infection: 1 fictional patient, followed from a lumbar fusion on 08/12/2024 through a deep wound infection, septic shock and a revision surgery. Every entry below comes from the Medrecords AI PDF and cites its source page, so a physician reviewer or risk manager can check any line against the record.

By Ahmed Jemaa, Co-Founder & CEO of Medrecords AI · Published 3 Nov 2026

What does a medical chronology look like?

A medical chronology is a table with 1 row per encounter, in date order: the date, the provider or facility, what happened, and the page it came from. Rows that need a reviewer's attention carry a flag, so alerts and gaps sit in the timeline where they happened.

The table holds 23 of the PDF's 24 entries. We left out the 24th, a May 2026 IME, because it is an opinion about this record rather than care in it. It is in the full PDF.

Date	Provider / facility	Event and findings	Source	Flag
07/30/2024	Lakeside Spine & Ortho, Dr. C. Harmon	Pre-op visit. 63-year-old with L4-L5 degenerative spondylolisthesis and neurogenic claudication. Surgery scheduled; medical clearance obtained.	p. 8	None
08/12/2024	Lakeside Surgical Center	Admission and procedure. L4-L5 decompression and posterolateral fusion with instrumentation. Estimated blood loss 350 mL; operative time 3h 40m.	p. 24	None
08/12/2024	PACU	PACU. Stable; vital signs WNL; pain controlled; neuro exam intact.	p. 31	None
08/13/2024	Lakeside Surgical Center	POD 1. Tmax 38.2 C (100.8 F); incision clean, dry, intact; WBC 12.1; IV antibiotics (cefazolin) continued.	p. 38	None
08/14/2024	Lakeside Surgical Center	POD 2, fever. Tmax 38.8 C (101.8 F); WBC 14.8; HR 108; nursing note flags fever and malaise; discharge planned despite fever per order set.	p. 44	Alert
08/14/2024	Lakeside Surgical Center	Discharge. Discharged home POD 2. Discharge note documents "low-grade fever, presumed atelectasis"; no blood cultures drawn; no wound cultures; no imaging.	p. 48	Alert
08/15/2024	Home	Post-discharge day 1. Patient called clinic reporting chills and incisional drainage; advised to monitor, offered an appointment in 5 days.	p. 55	Alert
08/17/2024	Lakeside Medical Center, ED	ED readmission. Tmax 39.4 C (102.9 F); HR 122; BP 92/58; incision erythematous with purulent drainage; lactate 3.8; sepsis protocol initiated; admitted.	p. 63	None
08/18/2024	ICU	ICU admission. Septic shock; vasopressors; blood cultures x2; wound cultures; empiric vancomycin plus piperacillin/tazobactam.	p. 74	None
08/20/2024	OR, Dr. C. Harmon; ID consult	Surgical debridement. Deep wound infection; 400 mL purulent collection; extensive debridement; instrumentation retained; wound vac placed.	p. 89	None
08/21/2024	ICU, ID	ID follow-up. Cultures: methicillin-sensitive S. aureus. Narrowed to cefazolin 2 g q8h; 6-week course planned.	p. 96	None
09/02/2024	Medical unit	Step-down. Improved; wound vac changes; ambulation with assistance; glucose control.	p. 105	None
09/18/2024	Lakeside Medical Center	Discharge. Discharged to home health on IV antibiotics; wound vac in place; PICC line.	p. 117	None
10/14/2024	Wound clinic	Wound follow-up. Wound granulating; vac removed; wet-to-dry dressings; cultures negative.	p. 128	None
11/12/2024	Ortho follow-up, Dr. C. Harmon	Post-op follow-up. X-rays: hardware intact, no loosening. Persistent back and left leg pain; referred to pain management.	p. 136	None
01/09/2025	Lakeside Medical Center	CT lumbar. Mild lucency at left L5 pedicle screw; question of early loosening. MRI with contrast shows residual epidural enhancement.	p. 147	Gap
04/03/2025	Second opinion, Dr. E. Vance	Orthopedic second opinion. Nonunion of L4-L5 with hardware loosening; chronic pain; revision discussed.	p. 158	None
04/22/2025	OR, Dr. E. Vance	Revision surgery. L4-L5 revision with explant of loose hardware, decompression, autograft plus BMP, new instrumentation.	p. 172	None
06/10/2025	Post-op follow-up, Dr. E. Vance	Follow-up. Healing progressing; left leg pain improved 50%; gait stable.	p. 184	None
09/08/2025	Pain management	Pain consult. Chronic post-operative pain; gabapentin, PT, cognitive-behavioral referral.	p. 196	None
12/12/2025	Ortho follow-up, Dr. E. Vance	Follow-up. X-rays show consolidation; range of motion limited; permanent restriction: no lifting over 15 lb.	p. 205	None
03/11/2026	Lakeside Medical Center	MRI lumbar. No recurrent infection; hardware intact; mild epidural fibrosis at L4-L5.	p. 214	None
07/01/2026	Ortho follow-up, Dr. E. Vance	Final treating note. MMI reached; maintenance gabapentin; annual follow-up; future care plan documented.	p. 231	None

About this sample. The case is fictional and de-identified. Source pages refer to the page numbers of the demo packet, as printed in the PDF.

Where a standard-of-care review starts

The 3 alerts fall on 08/14 and 08/15/2024, between a fever on post-op day 2 and the ED readmission on 08/17. A reviewer has to answer 3 questions from those pages:

Was discharge per the order set reasonable with a Tmax of 38.8 C, a WBC of 14.8 and a heart rate of 108 (p. 44)?
Why does the discharge note attribute the fever to presumed atelectasis with no blood cultures, wound cultures or imaging (p. 48)?
Did an appointment 5 days out fit a call reporting chills and incisional drainage the day after discharge (p. 55)?

The gap flag on 01/09/2025 is a different kind of item. The CT raises early screw loosening and residual epidural enhancement nearly 3 months before the second opinion found nonunion (p. 147, p. 158). The chronology does not say what that means. It puts the page in front of the reviewer.

Medrecords AI drafts and cites. The physician or reviewer reviews and signs. A flag is a prompt for that review, never a finding.

Get the full file and the template

Full PDF, 4 pages The same chronology with the case overview, encounter times and all 24 entries. Download the PDF.

The sample page The post-op infection chronology in the samples library, with a page 1 preview. Open the post-op infection sample.

A blank template The same columns in a spreadsheet you fill in by hand, with a filled example from this case. Use the chronology template.

For the product view, see medical chronology software and how every line links to its source page. For hospital and physician review work, see medical malpractice record review.

Sample medical chronology FAQs

What is a medical chronology used for in standard-of-care review? It gives the reviewer the sequence of care with a page behind every entry, so the question of what was known, when, and by whom gets answered from the record. In this sample that sequence is a fever on post-op day 2, discharge the same day, and readmission with sepsis 3 days later.

What do the Alert and Gap flags mean? Alert marks an entry to read first, such as a discharge with a documented fever and no cultures. Gap marks something the record raises but does not resolve, such as the 01/09/2025 CT that questions early screw loosening. A flag is a prompt for review, not a conclusion.

How is each entry cited? Each row carries the page of the source packet it came from, for example p. 48 for the discharge note. In Medrecords AI each citation opens that source page, so you check the entry against the original instead of trusting the summary.

Is this a real patient? No. The case is fictional and de-identified. The names, facilities and case number in the PDF belong to a demo case built to show the format.

How long does Medrecords AI take to build a chronology like this? It reads about 100 pages a minute, so a packet the size of this one, cited up to p. 231, is read in a few minutes. Your review of the draft takes longer, and it should.

What does it cost? Pricing starts at 10 cents per deduplicated page, down to 5 cents with volume. Exact duplicates are never charged, there is no subscription, and credits never expire. First case is free on us.

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