Twenty patients were enrolled in the study. The mean age was 36 ± 13 years. There were 14 males and six females. The average TBSA was 44 ± 17%. Screening and monitoring of IAP were applied by: oliguria (42%), abdominal distension (31.5%) and gastrointestinal trouble (21%). IAH occurred between day 2 and day 3 after early burn resuscitation, respectively in 52% and 63%. IAH was observed in 69% of cases in patients admitted to the ICU with a delay of 1.6 days post burn injury. IAH was noted in 13 patients; of these, five patients developed an abdominal compartment syndrome. The mean IAP was 16 ± 7 mmHg. Patients were assigned into two groups: G1 (IAH+; n = 13) and G2 (IAH-; n = 7). Comparative study of the two groups shows that HIA increases significantly body weight gain within the first 5 days after injury: 8 kg for G1 versus 2 kg for G2 (P = 0.04), occurrence of ARDS (70% for G1 vs. 16.7% for G2, P = 0.02), respiratory failure (77% for G1 vs. 28.5% for G2, P = 0.06), shock (70% for G1 vs. 16.7% for G2, P 0.02) and mortality (61.5% vs. 50%).