George M. Hanna

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BACKGROUND Multiple lines of evidence suggest that the adrenergic system can modulate sensitivity to anesthetic-induced immobility and anesthetic-induced hypnosis as well. However, several considerations prevent the conclusion that the endogenous adrenergic ligands norepinephrine and epinephrine alter anesthetic sensitivity. METHODS Using dopamine(More)
BACKGROUND Intrathecal drug delivery systems represent an increasingly common treatment modality for patients with a variety of conditions, including chronic pain and spasticity. Pumps rely on electronic programming to properly control and administer highly concentrated medications. Electromagnetic interference (EMI) is a known exposure that may cause a(More)
Intrathecal drug delivery systems are an effective and increasingly common pain treatment modality for certain patient populations. Pumps are surgically inserted in a subcutaneous abdominal pocket and refilled with highly concentrated medication at regular intervals. Inadvertent injection of medication outside the pump is a known complication of the refill(More)
BACKGROUND Total hip arthroplasty (THA) is a common surgical treatment for several conditions of the hip. While the majority of patients obtain satisfactory results, many develop chronic post-arthroplasty hip pain that can be difficult to treat. OBJECTIVE We evaluate the effectiveness of cooled (60°C) radiofrequency lesioning of the articular branches of(More)
1129 November 2012 A woman with a massive liver sarcoma presented with severe hypotension requiring high-dose vasopressor support (norepinephrine at 50 mcg/min), increased central venous pressure (more than 20 mmHg), and respiratory failure (requiring volume control ventilation with inspiratory oxygen fraction FIO2, 0.8 and positive end expiratory pressure,(More)
OBJECTIVE Patients in remote areas lack access to specialist care and pain management services. In order to provide pain management care to patients remote from our center, we created a telemedicine pain clinic (telepain) at Massachusetts General Hospital (MGH) in Boston, MA to extend services to the Island of Martha's Vineyard. DESIGN Over 13 months, 238(More)
Ten normal volunteers were studied in the hydrated and dehydrated states with the new renal radiopharmaceutical technetium-99m N,N'-bis(mercapto acetyl)-2, 3-diaminopropanoate [( 99mTc]CO2 DADS). The data were used to determine the effect of hydration and dehydration and to determine the normal range in each state. Visual evaluation of the images indicated(More)
To investigate the association between airway size and lung size, the relationships between upstream conductance (reflecting airway size) and vital capacity (reflecting lung size) was explored in 22 male and 15 female subjects free of respiratory disease. The size-corrected maximal flows and size-corrected upstream conductances were not significantly(More)
INTRODUCTION Spinal cord stimulation (SCS) for the treatment of lower extremity pain is believed to the result of increased activity in the descending inhibitory and decreased activity in the ascending excitatory tracts. Evidence suggests that the analgesia afforded by SCS may be altered using certain neuropathic pain medications that also modulate(More)