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26.08.2019 | Original Article | Ausgabe 5/2019

Journal of Anesthesia 5/2019

Pre-anesthetic ultrasonographic assessment of the internal jugular vein for prediction of hypotension during the induction of general anesthesia

Zeitschrift:
Journal of Anesthesia > Ausgabe 5/2019
Autoren:
Kenta Okamura, Takeshi Nomura, Yusuke Mizuno, Tetsuya Miyashita, Takahisa Goto
Wichtige Hinweise
A comment to this article is available online at https://​doi.​org/​10.​1007/​s00540-019-02710-9.

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Abstract

Purpose

Severe hypotension caused by anesthetic administration for anesthesia induction, which might cause ischemic stroke, myocardial injury, acute kidney injury and postoperative mortality, should be prevented. Anesthesiologists are familiar with ultrasound examination of the internal jugular vein (IJV). This study aimed to clarify whether ultrasonographic IJV evaluation just before induction could predict the occurrence of such hypotension.

Methods

Adult patients undergoing surgery under general anesthesia were enrolled after excluding patients with cardiovascular disease or ASA-PS ≥ III. Ultrasonographic IJV images were recorded in both the supine and 10° Trendelenburg positions immediately before induction. Using these images, IJV area (IJV-A), diameter and change rate with posture were measured. Hypotension during induction was defined as mean BP < 60 mmHg or > 30% decrease from baseline.

Results

Hypotension during induction was observed in 37 of 82 patients. IJV-A in the Trendelenburg position was 2.02 ± 0.86 and 1.72 ± 0.68 in the hypotensive and non-hypotensive groups, respectively (P = 0.08). Logistic regression analysis performed using age, use of calcium antagonists, angiotensin converting enzyme inhibitors/angiotensin receptor blockers, baseline mean BP and IJV-A in the Trendelenburg position as variables showed that IJV-A in the Trendelenburg position was an independent predictor of hypotension, with an adjusted odds ratio of 3.11 (95% CI 1.07–9.03, P = 0.04). Area under the curve was 0.595 (95% CI 0.469–0.722) for IJV-A in the Trendelenburg position.

Conclusion

IJV-A in the Trendelenburg position was an independent predictor of hypotension during induction. Further study is required to examine the diagnostic accuracy of IJV-A as a predictor for hypotension during induction.

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