Fig. 5
From: An easier and safe affair, pleural drainage with ultrasound in critical patient: a technical note
A Remove the syringe from the needle and pass the guidewire through the needle. After inserting the guidewire, remove the needle, leaving the guidewire in place. B Employing a high-frequency US transducer (linear probe) it is possible to visualise the insertion of the guidewire in real-time. C Shift to low-frequency US transducer (convex probe) to define the final position of the guidewire using US. It is mandatory to check the correct insertion of the guidewire at the end of the procedure. D As shown, the guidewire is correctly positioned within pleural effusion