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Complicated parapneumonic effusions and empyemas are associated with significant morbidity and mortality. When managing a potentially infected pleural space, current guidelines support performing diagnostic thoracentesis prior to consideration of chest tube insertion. We present a case demonstrating our clinical approach to the management of complicated parapneumonic effusions and empyemas, with patient presentation and initial point-of-care thoracic ultrasound assessment guiding consideration of immediate insertion of small-bore (14 F) chest tube. [ABSTRACT FROM AUTHOR]

Point-of-care ultrasound is a bedside tool that is increasingly being used as part of the physical examination to evaluate fluid status. Cardiac ultrasound for assessment of volume status focuses on evaluating left ventricular ejection fraction, presence of pericardial effusion, right ventricular size, inferior vena cava size and collapsibility, and stroke volume measurement at the left ventricular outflow tract. Another way in which POCUS can be used to assess for fluid overload is the use of mitral inflow doppler to measure early diastolic transmitral flow velocity (E) and tissue doppler to measure early diastolic mitral annular velocity (e'). The ratio of E/e' is then used as an estimation of left ventricular filling pressure. This is a case where a 54-year-old female with end stage renal disease presents with hypoxic respiratory failure and is found to have diffuse bilateral airspace opacities on chest radiograph. E/e' was used to determine the etiology of the patient's undifferentiated pulmonary infiltrates and guide fluid removal through ultrafiltration. Ultrafiltration was performed with subsequent improvement in E/e' and the patient was successfully weaned off mechanical ventilation. [ABSTRACT FROM AUTHOR]

Background: A lack of objective outcome measures and overreliance on subjective pain reports in early proof-of-concept studies contribute to the high attrition of potentially effective new analgesics. We studied the utility of neuroimaging in providing objective evidence of neural activity related to drug modulation or a placebo effect in a double-blind, randomized, placebo-controlled, three-way crossover trial.Methods: We chronically administered pregabalin or tramadol (first-line and second-line analgesics, respectively), recommended for neuropathic pain, in 16 post-traumatic neuropathic pain patients. We measured subjective pain reports, allodynia-evoked neural activity, and brain resting state functional connectivity from patients during the three sessions and resting state data at baseline from patients after washout of their current medication. All data were collected using a 3 T MRI scanner.Results: When compared with placebo only, pregabalin significantly suppressed allodynia-evoked neural activity in several nociceptive and pain-processing areas of the brain, despite the absence of behavioural analgesia. Furthermore, placebo significantly increased functional connectivity between the rostral anterior cingulate and the brainstem, a core component of the placebo neural network.Conclusions: Functional neuroimaging provided objective evidence of pharmacodynamic efficacy in a proof-of-concept study setting where subjective pain outcome measures are often unreliable. Additionally, we provide evidence confirming the neural mechanism underpinning placebo analgesia as identified in acute experimental imaging studies in patients during the placebo arm of a clinical trial. We explore how brain penetrant active drugs potentially interact with this mechanism.Clinical Trial Registration: NCT0061015. [ABSTRACT FROM AUTHOR]