Background: Measurement of intrapleural pressure is useful during various pleural procedures. However, a pleural manometer is rarely available. Objectives: The aim of this study was to (1) construct an electronic pleural manometer, (2) assess the accuracy of the measurements done with the new device, (3) calculate the costs of the manometer construction and (4) perform an initial evaluation of the device in a clinical setting. Methods: Only widely accessible elements were used to construct the device. A vascular pressure transducer was used to transform pressure into an electronic signal. Reliability of the measurements was evaluated in a laboratory setting in a prospective, single-blind manner by comparing the results with those measured by a water manometer. Functionality of the device was assessed during therapeutic thoracentesis. The cost of the new pleural manometer was calculated. Results: We built a small, portable device which can precisely measure intrapleural pressure. The measurement results showed very high agreement with those registered with a water manometer (r = 0.999; p < 0.001). The initial evaluation of the electronic manometer during therapeutic thoracentesis showed it was easy to use. The total time needed for 6 measurements after withdrawal of different volumes of pleural fluid in 1 patient did not exceed 6 min. The total cost of the device was calculated to be <2,000 EUR. Conclusions: In the face of very limited offer of commercially available pleural manometers, it is possible to successfully construct a self-made, reliable, electronic pleural manometer at modest costs. The device is easy to use and enables data display and storage in the personal computer.

Keywords:
Electronic manometer, Intrapleural pressure, Pleural effusion, Pleural manometry, Thoracentesis
1.
Jacobs J: Manometry in the conduct of artificial pneumothorax. Chest 1937;3:18–26.
2.
Brandt HJ, Loddenkemper R, Mai J: Atlas der diagnostischen Thorakoskopie. Stuttgart, Thieme, 1983.
3.
Faurschou P, Viskum K: Artificial pneumothorax by the Veress cannula: efficacy and safety. Respir Med 1997;91:402–405.
4.
Light RW, Jenkinson SG, Minh VD, George RB: Observations on pleural fluid pressures as fluid is withdrawn during thoracentesis. Am Rev Respir Dis 1980;121:799–804.
5.
Villena V, López-Encuentra A, Pozo F, De-Pablo A, Martín-Escribano P: Measurement of pleural pressure during therapeutic thoracentesis. Am J Respir Crit Care Med 2000;162:1534–1538.
6.
Feller-Kopman D, Berkowitz D, Boiselle P, Ernst A: Large-volume thoracentesis and the risk of reexpansion pulmonary edema. Ann Thorac Surg 2007;84:1656–1662.
7.
Huggins JT, Sahn SA, Heidecker J, Ravene JG, Doelken P: Characteristics of trapped lung. Pleural fluid analysis, manometry, and air-contrast chest CT. Chest 2007;131:206–213.
8.
Lan RS, Lo SK, Chuang ML, Yang CT, Tsao TC, Lee CH: Elastance of the pleural space: a predictor for the outcome of pleurodesis in patients with malignant pleural effusion. Ann Intern Med 1997;126:768–774.
9.
Spencer J: A place for aspiration in the treatment of spontaneous pneumothorax. Thorax 1985;40:66–67.
10.
Herrejon A, Inchaurraga I, Vivas C, Custardoy J, Marin J: Initial pleural pressure measurement in spontaneous pneumothorax. Lung 2000;178:309–316.
11.
Froudarakis MR, Noppen M: Medical thoracoscopy: new tricks for an old trade. Respiration 2009;78:373–374.
12.
Froudarakis ME: New challenges in medical thoracoscopy. Respiration 2011;82:197–200.
13.
Janssen JP, Collier G, Astoul P, Tassi GF, Noppen M, Rodriguez-Panadero F, Loddenkemper R, Herth FJ, Gasparini S, Marquette CH, Becke B, Froudarakis ME, Driesen P, Bolliger CT, Tschopp JM: Safety of pleurodesis with talc poudrage in malignant pleural effusion: a prospective cohort study. Lancet 2007;369:1535–1539.
14.
Doelken P, Huggins JT, Pastis NJ, Sahn SA: Pleural manometry: technique and clinical implications. Chest 2004;126:1764–1769.
15.
Huggins JT, Doelken P: Pleural manometry. Clin Chest Med 2006;27:229–240.
16.
Feller-Kopman D: Therapeutic thoracentesis: the role of ultrasound and pleural manometry. Curr Opin Pulm Med 2007;13:312–318.
17.
Heidecker J, Huggins JT, Sahn SA, Doelken P: Pathophysiology of pneumothorax following ultrasound-guided thoracentesis. Chest 2006;130:1173–1184.
18.
Froudarakis ME, Pataka A, Makris D, Kouliatsis G, Anevlavis S, Sotiriou I, Steiropoulos P, Eleftheriadis S, Bouros D: Respiratory muscle strength and lung function in patients undergoing medical thoracoscopy. Respiration 2010;80:220–227.
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2011
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