BACKGROUND Ocular perfusion pressure is commonly defined as mean arterial pressure minus intraocular pressure (IOP). Changes in mean arterial pressure or IOP can affect ocular perfusion pressure. IOP has not been studied in this context in the prone anesthetized patient. METHODS After institutional human studies committee approval and informed consent, 20 patients (American Society of Anesthe...

In the prone knee-chest position the spread of plain 0.5% bupivacaine in the cerebrospinal fluid and associated haemodynamic changes may be different compared with the horizontal position. A randomized comparison was performed in 40 ASA I-II patients, aged 24-61 yr, undergoing lumbar disc surgery. Subarachnoid injection (27-gauge needle) at the L2-3 interspace with 3 ml of 0.5% bupivacaine was ...

Obstructive sleep apnea (OSA) is well known to often improve with non-supine positioning as opposed supine positioning. Emerging research supports a role for position management in patients central (CSA) well. We report case of de novo complex syndrome (CompSAS) 78-year-old female, who presented after car accident due unclear syncope. Diagnostic polysomnography (PSG) showed moderate OSA. A Comp...

Given the current worldwide epidemic of obesity, it is likely that an increasing number of obese patients will be admitted to hospital in the future [1]. Caring for morbidly obese patients is a critical task that is time-consuming, and requires a trained and motivated staff. One particular hurdle to overcome in the management of these patients is positioning. Unfortunately, this is rarely consi...

Methods: A consecutive series of 309 patients underwent arthroscopic and/or open knee ligament reconstruction surgery. Seven patients were excluded based on the inability to perform a side-to-side comparison of internal rotation. Tibial internal rotation was assessed bilaterally on 302 patients during examination under anesthesia by a single orthopaedic surgeon measuring tibial tubercle excursi...

PURPOSE To test a prone position against the international-standard supine position in women undergoing whole-breast-radiotherapy (WBRT) after wide-local-excision (WLE) of early breast cancer (BC) in terms of feasibility, set-up errors, and respiratory motion. METHODS Following WLE of BC with insertion of tumour-bed clips, patients underwent 4D-CT for WBRT-planning in supine and prone positio...