[Risk factors for pulmonary hypertensive crisis (PHC) following VSD repair in infants].
We examined 100 patients who had undergone VSD repair from 1988 to 1991 to determine the risk factors to induce PHC postoperatively. We analyzed age, weight, preoperative Pp/Ps, Rp/Rs, Qp/Qs, and postoperative Pp/Ps using discriminant analysis. We had 34 cases of pulmonary hypertension (PH: Pp/Ps > 0.7) preoperatively. Among 100 cases, PHC developed in 6 patients and 2 of them died postoperatively. Incidence of PHC in all patients was 6%, and that in patients with PH was 18%. PHC fatality rate was 33%. The analysis revealed that the occurrence of PHC was significantly higher among those whose ages were below 2.1 years, and with weight of under 9.85 kg, preoperative Pp/Ps > 0.73, Rp/Rs < 0.34, and postoperative Pp/Ps > 0.43. In those with preoperative PH, the risk for PHC increased significantly when their postoperative Pp/Ps exceeded 0.44.
Matsumoto
M
M
Department of Anesthesiology, Kobe West City Hospital.
Naitoh
H
H
Higashi
T
T
Kurasako
T
T
Takatori
M
M
Tada
K
K
Ohba
O
O
D000293:Adolescent; D000367:Age Factors; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D005260:Female; D006345:Heart Septal Defects, Ventricular / Q000601:surgery*; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000453:epidemiology / Q000209:etiology*; D007223:Infant; D008297:Male; D011183:Postoperative Complications; D012307:Risk Factors