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Published on: February 10, 2023
Magic bullets in cardiac anesthesia and intensive care
Giovanni Landoni1, Laura Ruggeri, Alberto Zangrillo
1Department of Anesthesia and Intensive Care, Università Vita-Salute San Raffaele, Milan, Italy. landoni.giovanni@hsr.it
Insights
Evidence-based medicine is crucial, especially in cardiac anesthesia where few interventions definitively reduce mortality. Physicians must balance limited scientific evidence with clinical judgment for critical patient care.
Area of Science:
- Anesthesiology
- Clinical Research
- Evidence-Based Medicine
Background:
- The historical development of quasi-randomized studies highlights the ongoing need for robust medical evidence.
- Cardiac anesthesia currently lacks numerous definitive interventions to reduce perioperative mortality.
- Medical decisions are often based on experience or reasoning in the absence of strong evidence.
Purpose of the Study:
- To emphasize the critical need for evidence-based medicine in clinical practice.
- To discuss the challenges and implications of decision-making with limited scientific data.
- To highlight the benefits of patient involvement in clinical trials.
Main Methods:
- Review of historical context of medical research methodology.
- Analysis of current practices in cardiac anesthesia decision-making.
- Discussion of the impact of research bureaucracy and patient awareness.
Main Results:
- Despite historical advancements, evidence-based medicine remains underdeveloped in certain fields like cardiac anesthesia.
- Bureaucracy and lack of data significantly impede medical research progress.
- Patients in randomized trials may experience improved outcomes due to the Hawthorne effect.
Conclusions:
- Physicians must rely on their expertise to manage critical patients amidst scientific uncertainty.
- Clinical decisions often involve trade-offs based on incomplete evidence and educated guesses.
- There is a compelling need to advance evidence-based practices to improve patient outcomes and reduce mortality.
Abstract:
Even if the first quasi-randomized study in history was published in 1747, there is still a need for evidence-based medicine. In the specific field of cardiac anesthesia, there are few magic bullets (ie, drugs/techniques/strategies that might reduce perioperative mortality), and a recent international consensus conference attempted to list them all. In the absence of evidence-based medicine, medical decisions are made by eminence, experience, or physiopathologic reasoning. Even if increased or decreased mortality could be observed when administering almost every drug used in the current clinical context, if correctly studied, research is slowed by bureaucracy, which, together with ignorance, is indirectly killing thousands of patients per year. Patients should be fully aware of the reduced complication rates and the improved outcomes that occur in patients involved in randomized "researcher-driven" clinical trials, the so-called "Hawthorne effect." In conclusion, physicians have to do their best although they sometimes have little information. Their ability must counteract the lack of scientific evidences. Caring for critical patients involves making decisions based on realistic tradeoffs of clinical benefit and side effects, but too often these choices are made on the basis of extrapolations and educated guesses.
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