![Figure 4. Plasma values of antidiuretic hormone (ADH), atrial natriuretic hormone (ANP), aldosterone (Aldo), plasma renin activity (PRA) during spontaneous respiration with continuous positive-pressure aiway pressure (CPAP) of 4 cm H2O, positive end-expiratory pressure (PEEP), and again CPAP. [black diamond] Normovolemic, intact;[white heart] normovolemic, renally denervated; hypervolemic, intact;[white square] hypervolemic, renally denervated (n = 8; means +/− SE). Significant differences (P < 0.05):#CPAP first hour vs. CPAP fourth hour;[section] CPAP first hour vs. PEEP;[dagger] PEEP vs. CPAP fourth hour;* normovolemic vs. hypervolemic.](https://asa2.silverchair-cdn.com/asa2/content_public/journal/anesthesiology/89/4/10.1097_00000542-199810000-00019/2/19ff4.png?Expires=1716613291&Signature=NjHcgXDIdQDGt1D9CBCuLHuGLJolyngkBkbKEs9XOKDbwDHpnX0La9BuarOudaeSlIDzT1Ax-88m5CpRpFhypp0lgSuEYl1hIfDSncmiSvVf7Is5e4MpMoSalTg~qZI25~kPefYQnTAh9NtFiCAD2bYqJYyl2Ia-Fn6r6Dgi62iozzQ3UcaRpXqaWYug~PQeAkIMBbW1p9YIuNDT4xG3zOTNjfev4kX2T8jOl4akZcQzBDz-1gq-wwvRE51bq8JoNuUIeMEX3GtgU-y5l7JD2lRLqe~OsGccuuBnIe9-qV1U-rgWumKefCBLY4Wr3zeLe~atrGtSuyvgWxZsDa~M-w__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 4. Plasma values of antidiuretic hormone (ADH), atrial natriuretic hormone (ANP), aldosterone (Aldo), plasma renin activity (PRA) during spontaneous respiration with continuous positive-pressure aiway pressure (CPAP) of 4 cm H2O, positive end-expiratory pressure (PEEP), and again CPAP. [black diamond] Normovolemic, intact;[white heart] normovolemic, renally denervated; hypervolemic, intact;[white square] hypervolemic, renally denervated (n = 8; means +/− SE). Significant differences (P < 0.05):#CPAP first hour vs. CPAP fourth hour;[section] CPAP first hour vs. PEEP;[dagger] PEEP vs. CPAP fourth hour;* normovolemic vs. hypervolemic.
