MAXIMAL SNIFF MOUTH PRESSURE COMPARED WITH MAXIMAL INSPIRATORY PRESSURE IN ACUTE RESPIRATORY-FAILURE
MAXIMAL SNIFF MOUTH PRESSURE COMPARED WITH MAXIMAL INSPIRATORY PRESSURE IN ACUTE RESPIRATORY-FAILURE
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DOI：
10.1378/chest.100.1.175
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发表时间：
1991-07-01
期刊：
影响因子：
9.6
通讯作者：
FITTING, JW
中科院分区：
文献类型：
--
作者：
HERITIER, F;PERRET, C;FITTING, JW
吸气肌力量通常通过嗅觉 Pes 比 PImax 更好地反映阻塞情况。 此外，可以通过测量正常受试者和呼吸肌无力患者的嗅探 Pmo 无创地估计嗅探 Pes。 本研究的目的是比较嗅探 Pmo 和 P.PImax，以评估急性呼吸衰竭患者的吸气肌力量。 61% 的测量中，最高压力是由 P.PImax 产生的，39% 是由 sniff Pmo 产生的。 在 55% 的情况下，高于 35 cm H2O P.PI max 会产生最高压力，嗅探 Pmo/P.PImax 之比为 1.20 +/- 0.54。 在 35 cm H2O 以下，P.PImax 在 75% 的情况下产生最高压力，嗅探 Pmo/P.PImax 之比为 0.76 +/- 0.35 (p < 0.02)。 因此，嗅探 Pmo 和 P.PImax 的测量在评估吸气肌力量方面是相互补充的。 然而，嗅探 Pmo 低估了严重吸气肌无力患者的吸气肌力量。
Inspiratory muscle strength most often is better reflected by sniff Pes than PImax against occlusion. Furthermore, sniff Pes can be estimated noninvasively by the measurement of sniff Pmo in normal subjects and in patients with respiratory muscle weakness. The aim of this study was to compare sniff Pmo and P.PImax to assess inspiratory muscle strength in patients with acute respiratory failure. The highest pressure was produced by P.PImax in 61 percent of measurements, and by sniff Pmo in 39 percent. Above 35 cm H2O P.PI max yielded the highest pressure in 55 percent of cases and the ratio sniff Pmo/P.PImax was 1.20 +/- 0.54. Below 35 cm H2O, P.PImax yielded the highest pressure in 75 percent of cases and the ratio sniff Pmo/P.PImax was 0.76 +/- 0.35 (p < 0.02). Thus, measurements of sniff Pmo and P.PImax complement one another for assessing inspiratory muscle strength. However, sniff Pmo underestimates inspiratory muscle strength in patients with severe inspiratory muscle weakness.