A 55‐year‐old male with acute pericarditis presented with low‐pressure cardiac tamponade (LPCT) unresponsive to volume infusion. Subsequent pericardiocentesis resulted in hemodynamic improvement and unmasking of pericardial constriction. This case provides illustrative hemodynamic tracings of LPCT. Additionally, the presence of concurrent pericardial constriction that may indicate a plausible underlying mechanism for the blunted responsiveness to fluid expansion in LPCT. The underlying physiologic processes and the associated hemodynamic tracings are discussed.

中文翻译：

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低压心包填塞的血流动力学：说明性病例报告

一名 55 岁男性，患有急性心包炎，出现低压心包填塞 (LPCT)，对容量输注无反应。随后的心包穿刺术导致血流动力学改善并揭示了心包缩窄。本病例提供了 LPCT 的说明性血流动力学描记。此外，并发心包收缩的存在可能表明 LPCT 中对液体扩张反应迟缓的潜在机制。讨论了潜在的生理过程和相关的血流动力学描记。