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Rev. Assoc. Med. Bras. (1992) ; 62(2): 157-161, Mar.-Apr. 2016. tab, graf
Article in English | LILACS | ID: lil-780966

ABSTRACT

Summary Objective: To determine the lung age (LA) in obese people before and after bariatric surgery, compare the LA with the chronological age (CA) before and after the peration, and verify whether there was a functional pulmonary rejuvenation after it. Methods: A prospective longitudinal study including 43 morbidly obese patients who underwent bariatric surgery. The patients underwent clinical and spirometric evaluation in two stages, before and after the surgery. In both stages, LA, CA and spirometric variables were measured. Results: A significant improvement in the spirometric variables (FVC; FEV1; and FEV1/FVC ratio) was found after the operation (p≤ 0.0001). Comparing the LA before (50.93±13.36 years) and after the surgery (39.02±12.95 years), there was an important reduction of 11.90±9.12 years (95CI:9.10-14.71; p≤0.0001) in LA after surgery. The difference between LA and CA before surgery was 12.20± 11.71 years (95CI:8.60-15.81) with significant difference (p≤0.0001), and the difference between LA and CA after surgery was -1.95±11.83 years (95CI: -5.59-1.69) with no significant difference (p≤0.28). Regarding LA, we observed a pulmonary aging of 12.20±11.71 years before the surgery and a pulmonary rejuvenation of 11.90±9.12 years after it. Conclusion: Morbid obesity is responsible for early damage and functional accelerated pulmonary aging. After the correction of the body weight by surgery, there is a functional pulmonary rejuvenation demonstrated by the normalization of LA in relation to CA.


Resumo Objetivo: determinar a idade pulmonar (IP) em obesos no pré e pós-operatório de cirurgia bariátrica, comparar a IP com a idade cronológica (IC) antes e após a cirurgia, e verificar se houve rejuvenescimento pulmonar funcional após a cirurgia. Métodos: estudo longitudinal, prospectivo, envolvendo 43 pacientes obesos mórbidos submetidos à cirurgia bariátrica. Os pacientes foram submetidos à avaliação clínica e espirométrica antes e após a cirurgia, sendo determinadas IP, IC e variáveis espirométricas. Resultados: observou-se melhora significativa nas variáveis espirométricas (VEF1, CVF e razão VEF1/CVF) após a cirurgia (p≤0,0001). Comparando a IP antes (50,93±13,36 anos) e após a cirurgia (39,02±12,95 anos), observou-se redução significativa da IP no pós-operatório de 11,90±9,12 anos (IC 95% 9,10-14,71; p≤0,0001). A diferença entre IP e IC no pré-operatório foi de 12,20±11,71 anos (IC 95% 8,60-15,81) com diferença significativa (p≤0,0001). A diferença entre IP e IC no pós-operatório foi de -1,95±11,83 anos (IC 95% -5,59-1,69), sem apresentar diferença significativa (p≤0,28). Quando comparamos a IP antes e após a cirurgia, observamos um envelhecimento pulmonar de 12,20±11,71 anos antes e um rejuvenescimento pulmonar de 11,90±9,12 anos após a cirurgia. Conclusão: a obesidade mórbida causa dano precoce e envelhecimento pulmonar funcional acelerado. Após a correção do peso corpóreo pela cirurgia, há um rejuvenescimento pulmonar funcional, mostrado pela normalização da IP em relação à IC.


Subject(s)
Humans , Male , Female , Adult , Rejuvenation/physiology , Obesity, Morbid/surgery , Obesity, Morbid/physiopathology , Bariatric Surgery , Lung/physiopathology , Postoperative Period , Spirometry , Aging/physiology , Weight Loss/physiology , Vital Capacity/physiology , Forced Expiratory Volume/physiology , Prospective Studies , Longitudinal Studies , Age Factors , Treatment Outcome , Middle Aged
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