Abstract
Peroral endoscopic myotomy (POEM) is natural orifice transluminal endoscopic surgery to treat esophageal achalasia. During POEM, cardiovascular dynamics can be impaired by capnoperitoneum, capnomediastinum, and systemic carbon dioxide accumulation. We systematically investigated changes in cardiovascular dynamics during POEM. We included 31 patients having POEM in this single-center prospective observational study. Before and every 5 min during POEM we measured mean arterial pressure (MAP), heart rate (HR), cardiac index (CI), stroke volume index (SVI), and systemic vascular resistance index (SVRI) using non-invasive finger cuff-derived pulse wave analysis. During POEM, the median MAP was higher than the median baseline MAP of 77 (67;86) mmHg. HR (median at baseline: 67 (60;72) bpm), CI (2.8 (2.5;3.2) L/min/m2), SVI (42 (34;51) mL/m2), and SVRI (1994 (1652; 2559) dyn × s × cm−5 × m−2) remained stable during POEM. Mixed model-derived 95% confidence limits of hemodynamic variables during POEM were 72 to 106 mmHg for MAP, 65 to 79 bpm for HR, 2.7 to 3.3 L/min/m2 for CI, 37 and 46 mL/m2 for SVI, and 1856 and 2954 dyn × s × cm−5 × m−2 for SVRI. POEM is a safe procedure with regard to cardiovascular dynamics as it does not markedly impair MAP, HR, CI, SVI, or SVRI.
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BS: This author conceived and designed the study, was responsible for data analysis and interpretation, drafted the manuscript, and supervised the study. CV: This author collected the data, was responsible for data analysis and interpretation, and drafted the manuscript. HOP: This author was responsible for data analysis and interpretation, performed the statistical analyses, and critically revised the manuscript for important intellectual content. TR: This author was responsible for data analysis and interpretation and critically revised the manuscript for important intellectual content. MP: This author was responsible for data analysis and interpretation and critically revised the manuscript for important intellectual content. BL: This author conceived and designed the study, was responsible for data analysis and interpretation, and drafted the manuscript.
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BS has received institutional restricted research grants, honoraria for giving lectures, and refunds of travel expenses from CNSystems Medizintechnik GmbH (Graz, Austria). For all other authors there is no conflict of interest to disclose.
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Ethical approval for this study (PV5540) was provided by the Ethics Committee of the Medical Board of Hamburg, Germany (Prof M. Carstensen) on 22 August 2017.
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Glossary
- POEM
-
Peroral endoscopic myotomy
- ASA
-
American Society of Anesthesiologists
- MAP
-
Mean arterial pressure
- HR
-
Heart rate
- CI
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Cardiac index
- SVI
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Stroke volume index
- SVRI
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Systemic vascular resistance index
- CO2
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Carbon dioxide
- etCO2
-
End-tidal carbon dioxide
- MV
-
Minute ventilation
- TV
-
Tidal volume
- RR
-
Respiratory rate
- PEAK
-
Peak inspiratory pressure
- PEEP
-
Positive end-expiratory pressure
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Saugel, B., Vokuhl, C., Pinnschmidt, H.O. et al. Cardiovascular dynamics during peroral endoscopic myotomy for esophageal achalasia: a prospective observational study using non-invasive finger cuff-derived pulse wave analysis. J Clin Monit Comput 35, 827–834 (2021). https://doi.org/10.1007/s10877-020-00541-8
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DOI: https://doi.org/10.1007/s10877-020-00541-8