Table 1 : Transcranial doppler findings*.

Physiological parameters
at the time of TCD
Left MCA Right MCA Left ICA Right ICA Lindegaard
Day pCO2 MAP BIS PSV EDV Mean RI PI PSV EDV Mean RI PI PSV EDV Mean PSV EDV Mean Left Right
Onset
11/19
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Day 1
11/24
30.6 96 -- 108 28 47 0.74 1.70 83 23 37 0.72 1.62 70 18 38 54 17 27 1.24 1.37
Day 3
11/26
57.2 68 -- 121 35.2 64 0.71 1.34 113 34.4 61 0.70 1.29 -- -- -- -- -- -- -- --
Day 4
11/27
43.4 71 60 181 39 70 0.78 2.03 161 39.5 65 0.75 1.87 -- -- -- -- -- -- -- --
Day 5
11/28
54.3 69 65 141 37.6 70.1 0.73 1.48 114 32 55.3 0.72 1.48 -- -- -- -- -- -- -- --
CTA
11/28
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Day 6
11/29
55.9 68 14 135 25 56 0.81 1.96 82 0 19 1 4.32 165 44 -- 167 85 -- 0.82 0.49

*Day 1 represents first day of transcranial Doppler (TCD) values available. MCA: Middle cerebral artery; ICA: Internal carotid artery; pCO2: Partial pressure CO2 on arterial blood gas; MAP: Mean arterial pressure;
BIS: Bispectral index values; PSV: Peak systolic velocity; EDV: End diastolic velocity; RI: Resistivity index; PI: Pulsatility index.
Lindegaard ratio or interhemispheric index is the ratio between mean flow velocities in the middle cerebral artery and the distal extracranial internal carotid artery.

Sarwal et al.Journal of Medical Disorders  2014 2:2DOI : 10.7243/2053-3659-2-2