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The effect of continuous positive airway pressure therapy on intraocular pressure in patients with OSA: a systematic review and meta-analysis.
J Clin Sleep Med
January 2025
Department of Otorhinolaryngology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Study Objectives: To assess the effect of continuous positive airway pressure (CPAP) therapy on intraocular pressure in Obstructive sleep apnea (OSA) patients.
Methods: The search was performed in Ovid Medline and Embase database then followed by a manual bibliography search. Abstract search and screening were independently performed followed by eligible full-text versions reviewed.
Resting state BOLD-perfusion coupling patterns using multiband multi-echo pseudo-continuous arterial spin label imaging.
Sci Rep
January 2025
Department of Radiology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
The alteration of neurovascular coupling (NVC), where acute localized blood flow increases following neural activity, plays a key role in several neurovascular processes including aging and neurodegeneration. While not equivalent to NVC, the coupling between simultaneously measured cerebral blood flow (CBF) with arterial spin labeling (ASL) and blood oxygenation dependent (BOLD) signals, can also be affected. Moreover, the acquisition of BOLD data allows the assessment of resting state (RS) fMRI metrics.
View Article and Find Full Text PDFCerebrovascular Compliance during Progressive Hypotension in Patients with Autonomic Failure.
J Appl Physiol (1985)
January 2025
School of Kinesiology, Western University, London, Ontario, Canada.
The compliant nature of cerebral blood vessels may represent an important mechanical protection for sustained cerebral perfusion during reductions in arterial blood pressure (ABP). However, whether the rise in cerebrovascular compliance (Ci) with falling ABP persists and exhibits a threshold effect remains unknown. Therefore, we analyzed Ci changes during graded head-up tilt (HUT) in individuals with autonomic failure (AF), a group that tolerates graded and progressive reductions in ABP.
View Article and Find Full Text PDFFeasibility of indocyanine green fluorescence imaging to predict biliary complications in living donor liver transplantation: A pilot study.
Ann Hepatobiliary Pancreat Surg
January 2025
Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
Backgrounds/aims: Liver transplantation (LT) is now a critical, life-saving treatment for patients with liver cirrhosis or hepatocellular carcinoma. Despite its significant benefits, biliary complications (BCs) continue to be a major cause of postoperative morbidity. This study evaluates the fluorescence intensity (FI) of the common bile duct (CBD) utilizing near-infrared indocyanine green (ICG) imaging, and examines its association with the incidence of BCs within three months post-LT.
View Article and Find Full Text PDFVenous compression causes chronic cerebral ischaemia in normal pressure hydrocephalus patients.
Fluids Barriers CNS
January 2025
Department of Neurosurgery, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan.
Background: Cerebral autoregulation is a robust regulatory mechanism that stabilizes cerebral blood flow in response to reduced blood pressure, thereby preventing cerebral ischaemia. Scientists have long believed that cerebral autoregulation also stabilizes cerebral blood flow against increases in intracranial pressure, which is another component that determines cerebral perfusion pressure. However, this idea was inconsistent with the complex pathogenesis of normal pressure hydrocephalus, which includes components of chronic cerebral ischaemia due to mild increases in intracranial pressure.
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