Isolated unilateral pulmonary artery agenesis: evaluation of natural and long term evolution after corrective surgery.

Abstract:

OBJECTIVE:Unilateral pulmonary artery agenesis is an uncommon isolated anomaly and since 1978 only 119 cases have been reported. In general the condition presents as pulmonary hypertension (PH) in children and hemoptysis in adults. Interventions such as pulmonary artery reconstruction and lobectomies were performed in 17% of the cases. We analyzed four of these cases, two in natural evolution and two with late term PH regression after surgical correction. METHODS:Three 22,10 and 35 month old male children and one 20 month old female child were included in the study. The 22 month old presented right-sided heart failure (RHF) and cyanosis; the 10 month old presented RHF and the other two presented exertion fatigue. All had PH symptoms, right ventricular strain on the EKG and cardiomegaly. Cardiac catheterization showed systemic pressures in the contralateral pulmonary artery, with right-sided agenesis in three of the children and left-sided agenesis in one child. RESULTS:Surgical correction of pulmonary artery continuity was possible in the 22 month old and 10 month old using a 7 mm diameter Goretex conduit between the pulmonary arteries up to the hypoplastic contralateral pulmonary hilum. There was early and late regression of the PH signs and the children remained stable during follow-up to the ages of 7 and 2.5 years, respectively. The pressure ratio between the left and right ventricles was 30 and 40%, in both cases. Pulmonary perfusion increased from 8 to 44% and from 8 to 23%, in the two cases. The same procedure was scheduled for the other patients. CONCLUSION:This technique has become the operation of choice for similar cases, that are rarely described in literature, even in the presence of severe PH and contralateral pulmonary artery hypoplasia.

journal_name

Arq Bras Cardiol

authors

Atik E,Tanamati C,Kajita L,Barbero-Marcial M

doi

10.1590/s0066-782x2006001700005

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

423-8

issue

4

eissn

0066-782X

issn

1678-4170

pii

S0066-782X2006001700005

journal_volume

87

pub_type

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