Hemodynamic Changes during a Deep Inspiration Maneuver Predict Fluid Responsiveness in Spontaneously Breathing Patients
Table 4
Hemodynamic parameters before and after volume expansion in responders and nonresponders.
Before volume
After volume
expansion
expansion
RR, cycles/min
Nonresponders
23 ± 4
22 ± 4
Responders
23 ± 4
22 ± 4
HR, beats/min
Nonresponders
97 ± 22
97 ± 23
Responders
112 ± 22
107 ± 18b
MAP, mm Hg
Nonresponders
79 ± 13
83 ± 13b
Responders
80 ± 14
90 ± 16b
PP, mm Hg
Nonresponders
66 ± 19
68 ± 20
Responders
63 ± 22
71 ± 26b
VF, mm Hg
Nonresponders
82.1 ± 20.5
87.5 ± 22.9b
Responders
79.2 ± 27.8
94.6 ± 33.4b
SVi, mL/m²
Nonresponders
28.7 ± 4.9
31.3 ± 5.4b
Responders
28.9 ± 10.7
39 ± 14.1b
ΔPP, %
Nonresponders
6.6 ± 2.5a
4.5 ± 2.2b
Responders
13.5 ± 10.6
5.5 ± 2.5b
ΔPPdim, %
Nonresponders
7.2 ± 3.5a
5.7 ± 2.5a
Responders
20.6 ± 10
10.2 ± 6.1b
ΔVF, %
Nonresponders
6.6 ± 1.9a
5.1 ± 1.1b
Responders
13.4 ± 10.6
6.6 ± 3.1b
ΔVFdim, %
Nonresponders
7.4 ± 3a
6.3 ± 1.8a
Responders
20.4 ± 10.1
10.9 ± 5.2b
RR, respiratory rate; HR, heart rate; MAP, mean arterial pressure; PP, pulse pressure; VF, velocity peak of femoral artery flow; SVi, stroke volume index; ΔPP, respiration-induced change in PP; ΔPPdim, deep inspiration maneuver-induced change in PP; ΔVF, respiration-induced change in VF; ΔVFdim, deep inspiration maneuver-induced change in VF; responders, patients with volume expansion-induced changes in stroke volume ≥ 15%. versus responders; versus before volume expansion. Values given as mean ± SD.