The study demonstrated that SVV
might also be applied toward predicting fluid responsiveness using protective ventilation in PCV mode during OLV.
There was a significant increase in CVP and GEDV and decrease in SVV
and PPV after fluid loading.
Considering it a high-risk surgery, with significant volaemic shifts, we chose a fluid management regime guided by dynamic preload indices (SVV
, PPV) derived from the LiDCO monitor .
and BIS, monitors were continued in the intensive care unit (ICU) where norepinephrine 0.05mg/(kg.min) was required for maintenance of BP temporarily and potassium chloratum injection was required to treat hypokalaemia.
The clinical picture indicated an alteration of vestibular receptors moistened by the anterior vestibular artery, resulting in lateral semicircular canal (spontaneous nystagmus, caloric canal paresis, low VOR gain, and corrective saccades at vHIT) and utricular hypofunction (SVV
tilt toward the lesion).
Abbreviations PICU: Pediatric intensive care unit PiCCO: Pulse index continuous cardiac output GEDVI: Global end-diastolic volume index ITBVI: Intrathoracic blood volume index SVV
: Stroke volume variation CO: Cardiac output CI: Cardiac index GEF: Global ejection fraction SVRI: Systemic vascular resistance index EVLWI: Extravascular lung water index PVPI: Pulmonary vascular permeability index LOS: Length of stay SD: Standard deviation CIs: Confidence intervals.
Dynamic preload assessment with PPV or SVV
in mechanically ventilated patients is increasingly acknowledged in our daily routine but is still underused in clinical practice .
"Dynamic" parameters such as pulse pressure variation (PPV) and stroke volume variation (SVV
) are highly predictive of volume responsiveness, assessed as an increase in cardiac index of at least 10%, under very limited circumstances including mechanical ventilation with tidal volume >8mL/kg, excluding spontaneous breathing or cardiac arrhythmias [48, 49] (Table 4).
A neurophysiological vestibular examination was performed using fundus photographs and adjustments of the subjective visual vertical (SVV
) to detect otolith dysfunction.
Since vestibular dysbalance in the roll plane is associated with deviation of the subjective visual vertical (SVV
) , we applied a simple bedside test to measure SVV
in PD patients with or without LTF in an attempt to obtain further evidence for vestibular dysfunction in LTF of PD.
Table 1/Construct Correlation Matrix Construct TMS SVV
JDP RSE FMP Top Management 1 Support (TMS) (a) Shared Vision w/ .279 ** 1 Software Vendor (SVV
) (a) Joint Development .382 ** .440 ** 1 Process (JDP) (a) Return Management .446 ** .314 ** .651 ** 1 Software Effectiveness (RSE) (a) Firm Market .399 ** .377 ** .613 ** .682 ** 1 Performance (FMP) (b) Mean 4.023 4160 4.132 4.798 5.119 Standard Deviation 1.765 1.268 1.040 1.041 1.005 AVE .837 .718 .728 .646 .608 (a) 7-point Likert-type scale: (1) Strongly disagree to (7) Strongly agree.
If the stroke volume variation (SVV
) (measured in patients in sinus rhythm who were mechanically ventilated and fully adapted to the ventilator settings) exceeded 13%, a fluid challenge was given until the SVV
fell below 13%.