Citation: | HUANG Jing, WANG Lin, CAO Yang. Volumetric responsiveness of total lung compliance[J]. Journal of Clinical Medicine in Practice, 2022, 26(10): 88-91. DOI: 10.7619/jcmp.20214873 |
To investigate the volumetric responsiveness of lung total compliance (C) and the effect of hypertension on its responsiveness.
Sixty-five patients who underwent elective recumbent surgery in Red Cross Hospital of Guangzhou in Guangdong Province were selected as study subjects.C, airway plateau pressure (pplat), peak airway pressure (ppeak), heart rate (HR), mean arterial pressure (MAP), cardiac output (CO), stroke volume variability (SVV) and stroke volume (SV) of patients were recorded at different time points[5 min (t1), 10 min (t2), 15 min (t3), 20 min (t4), 25 min (t5), 30 min (t6)]of 30 min after mechanical ventilation.The change of C, SV, SVV (△C, △SV, △SVV) of patients in time periods of T1(5 to 10 min), T2(>10 to 15 min), T3(>15 to 20 min), T4(>20 to 25min) and T5(>25 to 30 min) were recorded.The brachial and ankle pulse wave conduction velocity (BaPWV) of hypertensive and non-hypertensive patients was collected by Japanese Kelin arteriosclerosis detector.
There were no significant differences in HR, MAP, SVV, SV, CO, pplat, ppeak and C from t1 to t6 time points (P>0.05).The correlation coefficients (r) between △C and △SVV were-0.626, -0.650, -0.676, -0.588, -0.518, respectively, were 0.744, 0.772, 0.785, 0.698 and 0.681, respectively between △C and △SV in all subjects during T1 to T5; during T1 to T5, the correlations between △C and △SVV, between △C and △SV increased in non-hypertensive subjects, but decreased in hypertensive subjects, the correlations between △C and △SVV or △C and △SV were the strongest during T3 in both hypertensive and non-hypertensive subjects.BaPWV of hypertensive and non-hypertensive patients showed significant difference (P < 0.05).
C has capacity response and hypertension can affect its responsiveness.
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