When the Average Misleads: Heart Rate Variability from Mean Heart Rate to Autonomic Dynamics

Vintage medical illustration of an early 20th-century doctor studying an electrocardiograph displaying a mix of normal ECG waveforms and surreal, distorted heart rhythm patterns beside a patient in a hospital bed.

Mean heart rate is one of the most familiar numbers in medicine. Useful, immediate, and often enough for a first description. Yet every average carries the same defect: it compresses into a single value everything that happened over time. Two patients can share a mean of 70 beats per minute (bpm) and, across the same … Read more

How Well Can a Local 30B Model Answer Medical Questions? Benchmarking Meta Muse Glimmer on an RTX 3090

Doctor in a vintage hospital ward feeds a medical report marked with a question mark into an old computer, which returns the same sheet with a green exclamation mark.

A reproducible 300-question evaluation across medical exams, biomedical literature, multilingual question answering, and clinical calculation Meta released Muse Glimmer on 10 August 2026: thirty billion parameters, open weights, built for agentic work on consumer hardware.[1,2] I tested a quantized version five days later on a single NVIDIA RTX 3090 — partly because it was the … Read more

From Chart to Variable: Extracting Computable Clinical Features from the EHR

Early 20th-century doctor looks perplexed at a bedside table crowded with medicine vials and bottles in an old hospital ward.

Vasoactive-Inotropic Score as a Worked Example Introduction: The Data Is There. The Variable Is Not. Every conversation about clinical AI opens on the same premise: hospitals are sitting on enormous quantities of data. True enough, and almost useless as a starting point. An electronic health record is a transactional system, built for documentation, for billing, … Read more

The Model Runs, the User Waits: The Paradox of Large Local LLMs

distressed early 20th-century doctor struggles to inject an enormous syringe labeled “Llama 3.1 405B Parameters” into a tiny desktop PC

Hunting for the largest language model you can run on a personal computer has turned into a discipline of its own. Forums, repositories and social feeds circulate configurations that load models of 70, 120, even several hundred billion parameters, using consumer GPUs, generous amounts of system RAM and increasingly aggressive quantisation. The results are frequently … Read more

AI & Digital Health: Quarterly Review 2026Q2

A man in early 20th-century clothing flips through a calendar and stops at July 1, 2026, in a modest hospital ward lit by warm, soft light.

Article authored by Michele D. Pierri, MD Cardiac Surgeon & Medical Technology Researcher Last updated: July 2026 Reading time: 5 minutes Ten patients. Zero recurrences. That’s the headline buried inside a small New England Journal of Medicine report that, frankly, deserved more attention than it got. In April, a Johns Hopkins team used personalized “digital … Read more

Multi‑Agent AI in Healthcare

small “town band” made of poorly dressed boys plays using improvised instruments

From passive Q&A to autonomous agents that debate, challenge, and assist clinicians. Article authored by Michele D. Pierri, MD Cardiac Surgeon & Medical Technology Researcher Last updated: June 2026 Reading time: 15 minutes Key takeaways 1. Redefining AI in Medicine: What Is an Agentic System? The first wave of AI in healthcare gave us chatbots. … Read more

OpenAI, Healthcare, and the Limits of Access

A doctor tries to open a door to extraordinary tools.

ChatGPT for Clinicians: A First Look from Italy Article authored by Michele D. Pierri, MD Cardiac Surgeon & Medical Technology Researcher Last checked: April 28, 2026 Reading time: 7 minutes OpenAI has rolled out a set of healthcare-oriented products built around ChatGPT. The headline reads, at first, like the launch of a single “medical GPT” … Read more