Lung deposition and systemic bioavailability of different aerosol devices with and without humidification in mechanically ventilated patients.
Background During mechanical ventilation medical aerosol delivery has been reported to be upto two fold greater with dry inhaled gas than with heated humidity. Urine levels at 0.5 h post dose (URSAL0.5%) has been confirmed as an index of lung deposition and 24 h (URSAL24%) as index of systemic absor...
| Publicado en: | Heart & Lung Vol. 46; no. 6; pp. 464 - 468 |
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| Autores principales: | , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Nov2017
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=125779962&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 125779962 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01479563 04L jtl: Heart & Lung issn: 01479563 maglogo: N pubinfo: dt: Nov2017 vid: 46 iid: 6 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 125779962 125779962 125779962 10.1016/j.hrtlng.2017.08.004 125779962 ppf: 464 ppct: 4 formats: tig: atl: Lung deposition and systemic bioavailability of different aerosol devices with and without humidification in mechanically ventilated patients. aug: au: Moustafa, Islam O.F. Ali, Mohammed R. A.-A. Al Hallag, Moataz Rabea, Hoda Fink, James B. Dailey, Patricia Abdelrahim, Mohamed E.A. affil: Clinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt sug: subj: Aerosols Nebulizers and Vaporizers Respiration, Artificial Biological Availability Drug Delivery Systems Human Crossover Design Male Female Albuterol Urine Male Female ab: Background During mechanical ventilation medical aerosol delivery has been reported to be upto two fold greater with dry inhaled gas than with heated humidity. Urine levels at 0.5 h post dose (URSAL0.5%) has been confirmed as an index of lung deposition and 24 h (URSAL24%) as index of systemic absorption. Our aim was to determine the effect of humidification and aerosol device type on drug delivery to ventilated patients using urine levels. Methods In a randomized crossover design, 36 (18female) mechanically ventilated patients were assigned to one of three groups. Groups 1 and 2 received 5000 μg salbutamol using vibrating mesh (VM) and jet nebulizers (JN), respectively, while group 3 received 1600 μg (16 puffs) of salbutamol via metered dose inhaler with AeroChamber Vent (MDI-AV). All devices were placed in the inspiratory limb of ventilator downstream from the humidifier. Each subject received aerosol with and without humidity at >24 h intervals with >12 h washout periods between salbutamol doses. Patients voided urine 15 min before each study dose and urine samples were collected at 0.5 h post dosing and pooled for the next 24 h. Results The MDI-AV and VM resulted in a higher percentage of urinary salbutamol levels compared to the JN (p < 0.05). Urine levels were similar between humidity and dry conditions. Conclusions Our findings suggest that in-vitro reports overestimate the impact of dry vs. heated humidified conditions on the delivery of aerosol during invasive mechanical ventilation. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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