Table 1

Demographics, preoperative data and surgical method in 175 children with infantile hypertrophic pyloric stenosis

Gender (male)148 (85%)
Age (days)40±17
Breast feeding127 (73%)
Gestational age39+4 (27+4 to 42+1)
Premature24 (14%)
Corrected age (days)37±17
SGA13 (7%)
Weight (g)3925±873*
Weight loss128 (74%)†
Severe underlying disease12 (7%)
Increased bilirubin25 (14%)
Bilirubin (μmol/L)45 (173)
Duration of symptoms (d)4 (7)
Acid base balanceFirstLast
 Metabolic acidosis2 (1%)‡2 (1%)§
 Metabolic alkalosis49 (29%)‡0 (0%)§
 Base excess4.6 (−8.0 to 22.7)¶0.6 (−7.4 to 9.0)**
 CO25.8 (1.3)††5.4 (1)‡‡
Electrolyte balanceFirstLast
 Hyponatremia17 (10%)§§9 (5%)¶¶
 Chloride101 (8)***108 (4)†††
 Lactate2.1 (1.3)‡‡‡1.9 (1)§§§
Preoperative LOH (days)2 (1)
Operation
 Umbilical incision98 (57%)
 Right upper quadrant incision75 (43%)

  • Values presented as absolute numbers and percentage of patients; n (%), mean±SD, median (min to max) or as median (IQR).

  • *Lacking data for 7 patients.

  • †Lacking data for 1 patient.

  • ‡Lacking data for 6 patients.

  • §Lacking data for 8 patients.

  • ¶Lacking data for 6 patients.

  • **Lacking data for 9 patients.

  • ††Lacking data for 6 patients.

  • ‡‡Lacking data for 8 patients.

  • §§Lacking data for 7 patients.

  • ¶¶Lacking data for 7 patients.

  • ***Lacking data for 52 patients.

  • †††Lacking data for 31 patients.

  • ‡‡‡Lacking data for 40 patients.

  • §§§Lacking data for 5 patients.

  • LOH, length of hospital stay; SGA, small for gestational age.