Review Article
Transcranial Doppler Ultrasound: A Review of the Physical Principles and Major Applications in Critical Care
Table 2
Factors influencing MFV [
18,
20].
| Factor | Change in MFV |
| Age | Increases up to 6–10 years of age then decreases (see [26] for a full range of values) | Sex | Higher MFV in women than men | Pregnancy | Decreased in the 3rd trimester | PCO2 | Increases with increasing PCO2 | Mean arterial Pressure (MAP) | Increases with increasing MAP (CBF autoregulates between CPP 50–150 mmHg) | Haematocrit | Increases with decreasing haemotocrit |
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