The fact that operating a patient in the supine position is easier than in a prone position is rather intuitive: apart from PCNL and, obviously, spinal surgery, there is no surgery of retroperitoneal organs performed in the prone position. So, why is it that nowadays PCNL is performed in the supine position only in 20% of cases worldwide? [1]. Indeed, the prone position was adopted in the pione...

Supine hypertension is difficult to manage in patients with pure autonomic failure (PAF), because treatment can worsen orthostatic hypotension. Supine hypertension in PAF has been associated with left ventricular hypertrophy, but end organ damage in the kidney has not been assessed. We reviewed hemodynamic and laboratory data of 64 male patients with PAF who were 69 11 (mean SD) years old. Syst...

BACKGROUND Severe obesity causes respiratory morbidity and mortality. The impact of obesity on the mechanics of breathing is not fully understood. PATIENTS AND METHODS We undertook a comprehensive observational study of lung volumes and elasticity in nine obese and nine normal weight subjects, seated and supine, during spontaneous breathing. Seated and supine total lung capacity (TLC) and sub...

Study Design Retrospective radiological review. Purpose To quantify the effect of sitting vs supine lumbar spine magnetic resonance imaging (MRI) and change in anterior displacement of the psoas muscle from L1-L2 to L4-L5 discs. Overview of Literature Controversy exists in determining patient suitability for lateral lumbar interbody fusion (LLIF) based on psoas morphology. The effect of pos...

Supine hypertension is difficult to manage in patients with pure autonomic failure (PAF), because treatment can worsen orthostatic hypotension. Supine hypertension in PAF has been associated with left ventricular hypertrophy, but end organ damage in the kidney has not been assessed. We reviewed hemodynamic and laboratory data of 64 male patients with PAF who were 69+/-11 (mean+/-SD) years old. ...

PURPOSE Post-implant dosimetric assessment is essential for optimal care of patients receiving prostate brachytherapy. In most institutions, post-implant computed tomography (CT) is performed in the supine position. This study aimed to assess variability in dosimetric parameters with postural changes during acquisition of post-implant CT scans. MATERIAL AND METHODS In total, 85 consecutive pa...

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...