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Ventilación mecánica no invasiva en una población anciana que ingresa en una unidad de monitorización respiratoria: causas,complicaciones y evolución al año de seguimiento
Authors:Gonzalo Segrelles Calvo  Enrique Zamora GarcíaRosa Girón Moreno  Emma Vázquez EspinosaRosa Mar Gómez Punter  Gilda Fernandes VasconcelosClaudia Valenzuela  Julio Ancochea Bermúdez
Institution:Servicio de Neumología, Hospital Universitario La Princesa, Madrid, España
Abstract:

Objective

To determine the usefulness of non-invasive ventilation (NIV) in elderly patients (≥75) admitted to a respiratory monitoring unit (RMU) during hospitalization and one year later in comparison with the results from the younger age group (<75).

Material and methods

Ours is a prospective observational study carried out at the Hospital Universitario La Princesa (Madrid, Spain). We recruited all patients who were ≥75 years old and were admitted to our RMU during the period 2008-2009 with respiratory acidosis (pH <7.35 and PaCO2 >45 mmHg) requiring NIV. We gathered data for basic variables as well as sociodemographics, history of previous pathologies, reason for hospitalization and severity, analysis upon admission and the evolution of blood gases at the start of NIV (within the first hour and after 24 hours), complications and evolution at the one-year follow-up.

Results

Mean age of the sample was 80.6 years. The Charlson index was 3.27. About half of the patients had some limitation for performing daily activities. The main reasons for admission were COPD exacerbation and heart failure. There were complications in 36% of the cases (11 renal failure and 6 atrial fibrillation). The survival rate at the one-year follow-up was 63.21%.

Conclusions

NIV is a good alternative in elderly patients admitted to the hospital with respiratory acidosis. We did not detect differences in mortality during admission between the two groups. The elderly patients were more frequently re-admitted than the younger group in the 6-12 months after hospital discharge. This could be due to their poorer functional state after hospitalization requiring NIV.
Keywords:Ancianos  Ventilació  n mecá  nica no invasiva  Enfermedad pulmonar obstructiva cró  nica  Insuficiencia cardí  aca  Unidad de monitorizació  n respiratoria
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