ArticleJA clinical reports2025
Capnogram plateau micro‑oscillations preceding end‑tidal CO
Article in JA clinical reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundVenous air embolism (VAE) is a potentially fatal complication of craniotomy. When a TEE is not used, attention to waveform-level changes during conventional monitoring is crucial. CASE PRESENTATION: A woman in her 70 s underwent supratentorial tumor resection in the supine position with a slight head-up tilt. Approximately 1 h after the craniotomy, gradual decreases in SpO2 (98% → 96%), systolic blood pressure (105 → 90 mmHg), and EtCO2 (37 → 30 mmHg) were observed. New micro-oscillations appeared on the capnogram plateau, followed by an EtCO2 decrease to 22 mm Hg. VAE was suspected. Treatment, including field flooding, head-down positioning, as well as FiO2, dobutamine, and rapid fluid supplementation, stabilized her and allowed the uneventful completion of surgery. Arterial blood gas levels improved concurrently with EtCO2 recovery.
conclusionsCareful scrutiny of capnogram morphology, not only numeric EtCO2, can expedite the suspicion and timely management of VAE when advanced monitoring is unavailable.
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