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Comparison of Function of Commercially Available Pleural Drainage Units and Catheters: Thoracentesis catheters

Interestingly, the lengths of both the Argyle and Arrow thoracentesis PDCs are shorter than their comparable pneumothorax catheter of the same internal bore (Table 2); shorter length should enhance not reduce flow rates. The lower flow rates of the thoracentesis catheters may be accounted for by the equipment attached proximally to the thoracentesis catheters including a three-way stopcock and a self-sealing valve.
Once a chest tube is placed, whether small or large bore, the tube may then be attached to a PDU. Similar to the selection of a PDC, the appropriate use of a PDU is well delineated in the ACCP spontaneous pneumothorax guidelines and less well defined for traumatic and iatrogenic pneumothoraces. Regardless, if a PDU is connected to a PDC, the same flow considerations exist. Appropriate size selection of a PDC to accommodate bronchopleural fistula air flow may be thwarted by selecting a PDU unable to handle the air flow with subsequent development of a tension pneumothorax. The mean flow rates handled by commercial PDU at — 20 cm H2O vary considerably, from 10.8 to 42.1 L/min (Table 1). The Sentinel Seal PDU has the lowest flow rate at 10.8 L/min and is lower than any other PDU tested. This average flow is substantially less than may be encountered in various clinical situations, outlined above, and could lead to the development of a tension pneumothorax. Several PDUs deliver < 16 L/min (discussed above) at — 10 cm H2O (Table 1), but all PDUs except the Sentinel Seal deliver > 16 L/min at — 20 cm H2O. my canadian family pharmacy
The accuracy of the pressures delivered by the PDU varies considerably (Table 3) with multiple interdevice differences; however, the clinical significance of these differences is questionable. For example, the Atrium 3612 was the least accurate PDU, with a mean error of 15.5% at — 20 cm H2O.