The diagnosis of dehydration among older patients with oropharyngeal dysphagia (OD) remains a clinical challenge. We aimed to assess the prevalence of dehydration in hospitalized older adults with OD and its relationship with other comorbidities. This is a cross-sectional study involving hospitalized older patients (≥ 70 years) with OD, assessed for OD using the Volume-Viscosity Swallowing Test. Treatment for impaired safety of swallow was based on xanthan gum thickened fluids with appropriate bolus viscosity (250 mPa·s or 800 mPa·s). Hydration status was evaluated using three different methodologies: (a) osmolarity equation (> 295 mmol/L), (b) blood urea nitrogen to creatinine ratio (BUN/Cr > 20 and (c) bioimpedance analysis (BIA): phase angle (PA) < 4.5. Nutritional status (Mini Nutritional Assessment-short form), functionality (Barthel Index), frailty (Fried Index), and sarcopenia (European Working Group on Sarcopenia in Older People) were also assessed. We included 218 hospitalized (9.1 ± 7.2 days) patients with OD (87.4 ± 5.5 years), 85.3% with safety impairments. On admission, (a) up to 58.3% needed fluid thickening for safe swallowing (90.6% of them at 250 mPa·s) and 93.6% textured modified diets, (b) According to BUN/Cr ratio, 78.9% were dehydrated and to osmolarity, 81.2% and (c) 61.1% of participants had values of PA < 4.5, and (d) hydration status was significantly worse in patients with lower functional status, frailty, malnutrition, and sarcopenia. Dehydration is a highly prevalent condition among hospitalized older patients with OD. Assessment of hydration status, and promotion and monitoring of safe fluid intake with multimodal hydration interventions, is mandatory in patients with OD.

老年口咽吞咽困难 （OD） 患者脱水的诊断仍然是一个临床挑战。我们旨在评估患有 OD 的住院老年人脱水的患病率及其与其他合并症的关系。这是一项横断面研究，涉及住院老年患者（≥ 70 岁），使用容量-粘度吞咽试验评估 OD。吞咽安全性受损的治疗基于具有适当推注粘度（250 mPa·s 或 800 mPa·s）的黄原胶增稠液体。使用三种不同的方法评估水合状态：（a） 渗透压方程 （> 295 mmol/L），（b） 血尿素氮与肌酐比值 （BUN/Cr > 20 和 （c） 生物阻抗分析 （BIA）：相位角 （PA） < 4.5。还评估了营养状况 （迷你营养评估 - 简称）、功能 （Barthel 指数） 、虚弱 （Fried 指数） 和肌肉减少症 （欧洲老年人肌肉减少症工作组）。我们纳入了 218 例住院 （9.1 ± 7.2 天） 的 OD 患者 （87.4 ± 5.5 岁），85.3% 有安全障碍。入院时，（a） 高达 58.3% 的参与者需要增稠液体才能安全吞咽（其中 90.6% 在 250 mPa·s）和 93.6% 的质地改良饮食，（b） 根据 BUN/Cr 比率，78.9% 的人脱水，渗透压，81.2% 和 （c） 61.1% 的参与者的 PA < 值为 4.5，以及 （d） 功能状态较低的患者的水合状态明显较差， 虚弱、营养不良和肌肉减少症。脱水是住院老年 OD 患者中非常普遍的疾病。OD 患者必须评估水合状态，并通过多模式水合干预促进和监测安全液体摄入。