--- title: Bergson’s Time in Acute Medicine date: 2026-02-07T20:48:43Z modified: 2026-08-09T05:10:16Z permalink: "https://www.micheledpierri.com/2026/02/07/bergson-time-acute-medicine-trajectories/" type: post status: publish excerpt: "" wpid: 2560 categories: - Medicine featured_image: "https://www.micheledpierri.com/wp-content/uploads/2026/02/bergson_.png" featured_image_alt: Symbolic historical village divided between moonlit night and golden daylight, centered on a clock tower, with an hourglass and candle in the foreground and townspeople gathered along the street. timestamp: 2026-08-09T05:10:16Z tags: - Medicine --- # Bergson’s Time in Acute Medicine: Why the Patient Is a Trajectory, Not a Timestamp There’s a quiet contradiction at the heart of acute medicine. We obsess over time. We count minutes. We chart vitals every few seconds. We schedule labs at fixed intervals, because if something is dangerous, surely it must be tracked. And still, anyone who has spent enough nights in a ward or ICU knows this: two patients can look “the same” at 02:00 and be radically different at 06:00. Same blood pressure. Same lactate. Same oxygenation. Different story. That gap between _measured time_ and _clinical time_ is where Henri Bergson becomes unexpectedly useful. Not as a decorative philosopher. More like a tool to name a problem we already live inside. --- ## A short Bergson primer Henri Bergson (1859–1941) was, for a while, a cultural phenomenon. Not the usual fate of a philosopher. He studied at the École Normale Supérieure, taught for years, and later held a chair at the Collège de France, where his lectures attracted large audiences. In 1927 he received the Nobel Prize in Literature (an odd category for someone often discussed in relation to science and psychology, but it fits). Bergson tried to describe experience without crushing it into neat, static forms. His key works came in a sequence that, read from a medical perspective, feels almost like a progressive deepening of what “time” means: - _Time and Free Will_ (1889) - _Matter and Memory_ (1896) - _Creative Evolution_ (1907) Now the core ideas. ### Measured time vs lived time Bergson argues that we often treat time like space. We imagine it as a line. Then we cut that line into equal segments (minutes, hours) and we start behaving as if this segmented line were time itself. He calls this habit _spatialized time_: time turned into something we can lay out, count, and manipulate like an object. Useful, yes. But incomplete. What gets lost is what Bergson calls **duration (durée)**: time as it is lived—continuous, qualitative, changing “texture” as it flows. Duration is not made of isolated instants stacked together. It is the way the present carries the past forward, moment by moment. That sounds philosophical because it is. But it also maps onto something very concrete in acute care. ![Minimal illustration contrasting clock time with Bergson’s “duration” in acute medicine.](https://www.micheledpierri.com/wp-content/uploads/2026/02/Bergson_1-1024x683.png) ### Memory as persistence, not storage In everyday thinking, memory is an archive. A storage room. In Bergson’s framework, memory is closer to _persistence_: the past remains active in the present. It shapes how the system responds. This is not about nostalgia. It is about dynamics. If you’re a clinician, you can translate that into a blunt statement: > The patient is not only a state. The patient is a history. And once you accept that, you start noticing how often medicine pretends otherwise. --- ## Acute medicine as “physiology with memory” Acute care is where the fiction of the isolated snapshot breaks down fastest. We love snapshots because they are clean: - lactate at 3.0 - MAP at 65 - creatinine at 1.9 - PaO₂/FiO₂ at 220 Numbers are comforting. They give the illusion of a stable “now.” But in real acute physiology, the meaning of a number depends on the path taken to get there. Same value, different trajectory, different risk. That is duration made clinical. You can call it path-dependence. You can call it hysteresis. You can call it “clinical intuition.” Bergson would simply say: you are seeing that time is not a line of interchangeable units. The system carries its past inside the present. So let’s ground this with one example—developed properly, not just hand-waved. --- ## A single example: postoperative lactate is a story, not a point I’ll use a postoperative setting because it’s a clean laboratory for acute physiology: a large perturbation, a defined “time zero,” then a fight back toward stability. But the principle generalizes to sepsis, trauma, pancreatitis, postoperative general surgery—anything where the body is trying to re-organize itself after a shock. ### Two patients, same lactate Imagine two postoperative patients at the same clock time. **At 6 hours after surgery:** - Lactate: **3.0 mmol/L** - MAP: **65 mmHg** - Urine output: “acceptable” - Temperature: “fine” You could convince yourself they’re similar. Now add the missing dimension: the trajectory. **Patient A** - Lactate: **6.2 → 4.1 → 3.0** (downward trend) - Vasopressor dose: stable or decreasing - Peripheral perfusion: improving - Mental status: clearing, a bit tired, but present **Patient B** - Lactate: **1.6 → 2.4 → 3.0** (upward trend) - Vasopressor dose: creeping up - Peripheral perfusion: mottled, capillary refill slow - Mental status: vague agitation, then quieter, not reassuringly Same lactate. Completely different situation. Patient A’s lactate of 3.0 is a _residual echo_ of the earlier insult. Patient B’s lactate of 3.0 is a _current signal_ that the system is failing to compensate. If you act as though “lactate 3.0” is a stable object, you will treat them similarly. And you’ll be wrong in a way that feels avoidable, even embarrassing. ![Two lactate trajectories crossing at 3.0 mmol/L, showing why trends matter in postoperative acute care.](https://www.micheledpierri.com/wp-content/uploads/2026/02/Bergson_2-1024x683.png) ### Why this happens (without pretending it’s only one mechanism) Lactate kinetics are influenced by production, clearance, perfusion, adrenergic tone, hepatic function, microcirculation, temperature, and the overall metabolic state. In acute illness, these factors don’t change independently or instantly. They move together, sometimes with delays, sometimes with overshoot. That’s why a single lactate value rarely tells you what you want to know. You don’t need to turn this into a biochemistry lecture. The bedside lesson is simpler: - **The slope matters.** - **The response to interventions matters.** - **The time it takes to recover matters.** Those are temporal concepts. They are not extra; they are the core. ### A practical way to chart “duration” at the bedside If you want a Bergson-compatible workflow that doesn’t annoy your colleagues: - **Always [pair any critical value with its recent trend](https://www.micheledpierri.com/wp-content/uploads/wp-mfa-exports/post/from-smartwatch-to-icu-5-breakthroughs-revolutionizing-hospital-monitoring.md)** Not “lactate 3.” But “lactate 3, down from 6 over 4 hours” or “up from 1.6.” - **Document the system’s response time** After fluids / vasopressor changes / ventilation adjustments: - did perfusion improve quickly? - slowly? - not at all? - **Treat recovery speed as a vital sign** Some patients bounce back. Others lag. That lag is information. Simple. And surprisingly under-formalized. --- ## Why this matters beyond one lab value If you work in acute care long enough, you start noticing that many “hard problems” are actually time problems in disguise. - A delirium that isn’t just “present” or “absent,” but fluctuates with sleep fragmentation and medication cycles - Kidney injury that looks mild on a value but severe in velocity - Respiratory failure where the trend in support requirements predicts the next 12 hours better than any single ABG You can develop each of those into its own post later. For now, just keep the lens: acute medicine is full of processes that look static only when we undersample them. And undersampling creates false certainty. The most dangerous kind. ![Infographic showing identical MAP and lactate values with opposite trends, illustrating snapshot bias in acute care.](https://www.micheledpierri.com/wp-content/uploads/2026/02/Bergson_3-1024x683.png) --- ## A bridge to a larger series Bergson is not the final word here. He’s the opening move. He gives language to a basic mismatch: clinical reality behaves like a continuous evolving process, while our documentation (and many of our models) behave as if the patient were a set of discrete states. In future posts, we can widen the frame and bring in systems thinkers who focus on irreversibility, emergence, and the way order appears under stress. Different vocabulary, same pressure point: the patient is not a static object. The patient is a becoming. But for today, one takeaway is enough: > In acute medicine, “time since admission” is a coordinate. > > “What the system has been doing during that time” is the real variable. --- ## Take-home - Bergson distinguishes **clock time** (segmented, countable) from **duration** (continuous, qualitative). - Acute care physiology behaves like a system with **memory**: the past persists in the present. - A single value (e.g., lactate 3.0) is often meaningless without **trajectory** (slope, response time, recovery speed). - This “trajectory thinking” scales beyond lactate: kidneys, lungs, delirium, hemodynamics. --- ## FAQ ### What does Bergson mean by “duration”? Duration (durée) is time as a continuous flow where the present retains the past—qualitative, not reducible to identical instants on a line. ### How is Bergson relevant to acute medicine? Because acute care decisions depend on trajectories: trends, response times, and recovery speed. Two patients can share the same measurement at a given timestamp and still differ dramatically in risk. ### Why is lactate a good example? Because lactate is commonly trended, responds with delays, and often carries more meaning in its kinetics than in a single value—making it a clean demonstration of “trajectory over snapshot.” ### Is this a philosophical metaphor or a clinical claim? Both, but the clinical claim is straightforward: ignoring trajectory discards information. --- ## Essential bibliography ### Primary texts (Bergson) 1. Bergson H. _Time and Free Will: An Essay on the Immediate Data of Consciousness._ 1889. 2. Bergson H. _Matter and Memory._ 1896. 3. Bergson H. _Creative Evolution._ 1907. ### Authoritative overviews 1. [Stanford Encyclopedia of Philosophy. “Henri Bergson.”](https://plato.stanford.edu/entries/bergson/) (Accessed 2026). 2. [The Nobel Prize. “Henri Bergson – Biographical” and “Bibliography.](https://www.nobelprize.org/prizes/literature/1927/bergson/biographical/)” (Prize in Literature 1927). 3. [Collège de France. “Henri Bergson”](https://www.college-de-france.fr/fr/chaire/henri-bergson-philosophie-moderne-chaire-statutaire) (institutional page; accessed 2026).