What will cause an increase in mean arterial pressure?

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Patient characteristic	(n = 19)
Age (years)	74 ± 11
Gender (%)	13 males (68)
Duration of shock prior to inclusion (hours)	16 ± 6
APACHE II score	24 ± 10
Intensive care unit length of stay (days)	12 ± 8
In-hospital mortality (n (%))	10 (53)
Source of infection (n (%))
Respiratory infection	11 (58)
Abdominal infection	6 (32)
Bacteremia	1 (5)
Urinary tract infection	1 (5)
Comorbidities (n (%))
Chronic hypertension	19 (100)
Diabetes	2 (10)
Chronic renal failure	2 (10)
Usual mean arterial pressure acquired from previous medical records (mmHg)	93 ± 7
Fluid infusion during the study (ml)	185 ± 55