BACKGROUND Conflicting reports exist on the effect of sildenafil on ophthalmic artery blood flow; many visual disturbances due to vascular insult were reported with the use of sildenafil in diabetic patients like nonarteritic ischemic optic neuropathy. OBJECTIVES The present work aimed to investigate whether sildenafil modulates ophthalmic artery vasoreactivity in patients with type 2 diabete...

The present study evaluated the effect of smoking deprivation on a biobehavioral index of distress tolerance, breath-holding duration, among 43 adult smokers in a repeated measures test (Session 1=smoking-as-usual, Session 2=12-h smoking deprivation). We theorized that distress tolerance is a context-dependent individual difference variable whose expression varies prospectively, within-individu...

OBJECTIVE Breath holding spells (BHS) are common involuntary reflexes in infancy and early childhood. Differential diagnosis should embrace Long QT Syndrome (LQTS) and paroxysmal abnormalities of rhythm. The aim of this study was to compare QT dispersion (QTd) in children with breath holding spells and normal controls. MATERIALS & METHODS QT dispersion and Corrected QT(QTc) dispersion were me...

The diffusing capacity of the lungs (DL) is defined as the rate of a gas transferred, divided by the difference in the mean partial pressure of that gas across the alveolar-capillary "membrane." Direct determination of the diffusing capacity for oxygen (DLo2) has been limited by technical difficulties and by the problematical calculation of the mean oxygen pressure on the capillary side of the ...

Background: Coronary artery bypass graft (CABG) is still associated with frequent development of postoperative pulmonary complications, which are particularly concerning given its link to increased patient morbidity and mortality and resource utilization. Aim of the Work: The aim of this study was to compare between the effects of two inpatient respiratory retraining techniques post coronary ar...

From clinical history 58 children were diagnosed as having reflex anoxic seizures secondary to provoked cardioinhibition (also known as white breath-holding attacks). Before referral, these seizures were commonly misdiagnosed as epileptic either because the provocation was ignored, not recognised, or was a febrile illness, or because there was no crying, no obvious breath-holding, little cyanos...

Background. Orthostatic hypotension (OH) is an important nonmotor manifestation of Parkinson's disease (PD). Changes in cerebrovascular reactivity may contribute to this manifestation and can be monitored using transcranial Doppler. Objective. To identify possible changes in cerebrovascular reactivity in patients with OH. Methods. Twenty-two individuals were selected and divided into three grou...

Cardiac arrest is rare in children. Breath-holding, on the other hand, is fairly common. We report a case in which one complicated the other with serious consequences. A review of the literature on the subject was undertaken.

Background In patients with breath-holding difficulties or arrhythmia, real-time CINE-MRI is preferred over segmented acquisitions in one breath-hold. However, common real-time sequences require a deteriorating trade-off between spatial and temporal resolution. In the current work, highly accelerated real-time CINE-MRI which features compressed sensing with k t regularization [1] was evaluated ...

Regulating the breath is an important part of yoga practice. Descriptions in traditional yoga texts mention breath regulation as a way of getting spiritual realization. In yoga, there are several ways to modify breathing, such as changing the rate and depth, holding the breath, breathing through the mouth, or breathing alternately through one or both nostrils. These voluntarily regulated yoga b...