BACKGROUND We evaluated the effects of intravenous dexmedetomidine during spinal anesthesia on hemodynamics, respiratory rate, oxygen saturation, sedpain, and compared them with those of saline infusion. Sixty American Society of Anesthesiologists physical status I and II cases were randomly divided into two groups. Patients were connected to the monitor after premedication, and spinal anesthes...

We introduce a new multi aperture system capable of capturing six identical images of the human fundus at six different spectral bands. The system is based on a lenslet array architecture and is well suited for spectroscopy application. The multi-aperture system was interfaced with a fundus camera to acquire spectroscopic sensitive images of the retina vessel and ultimately to calculate oxygen ...

A univentricle with parallel pulmonary and systemic circulations is inherently inefficient because mixing of pulmonary and systemic venous return occurs. Thus a cavopulmonary anastomosis is used as a staged palliative procedure to reduce volume overload in patients with cyanotic congenital heart disease. On the basis of oxygen uptake and consumption, an equation was derived that related cardiac...

OBJECTIVE Determining the blood flow through intra and extra-cranial arteries during neck extension may be helpful but is a controversial issue. We aimed to elucidate the changes in cerebral blood flow related to head positioning during thyroid surgery by carotid Doppler examination and regional oxygen saturation variations. METHODS Thirty patients were recruited to the study. Patients were p...

The bidirectional cavopulmonary anastomosis (BCPA) is an operation often performed on children with functionally single ventricles, and is meant to prepare a future total cavopulmonary anastomosis. In the circulation ensuing from a BCPA, the lower circulation is external to the lung perfusion, with a propensity to low oxygen saturation, being only oxygenated by the mixing with the blood from th...

Blood pressure, heart rate, and oxygen saturation were monitored prospectively during 40 echocardiography recordings on 17 preterm infants (25-29 weeks; 510-1430 g), to examine whether echocardiography can be performed without disturbing cardiorespiratory status in preterm infants. There was no impact on absolute blood pressure. Heart rate increased by a mean of 4 beats per minute, and oxygen s...

Submit Manuscript | http://medcraveonline.com Abbreviations: PNP: Pneumoperitoneum; SVR: Systemic Vascular Resistances; PVR: Pulmonary Vascular Resistances; HR: Heart Rate; PaO2:-Arterial Saturation of Oxygen; MBP: Mean Blood Pressure; IV: Intravenously; SpO2: Peripheral Oxygen Saturation; Vt: Tidal Volume; IPPV: Intermittent Positive Pressure Ventilation; EtCO2: End Tidal Carbon di Oxide; ECG:...

OBJECTIVE To evaluate the changes in cerebral blood flow during awake off-pump coronary artery bypass grafting and compare with the changes during off-pump coronary artery bypass grafting under general anesthesia, using continuous monitoring of regional cerebral oxygen saturation. METHODS The study population comprised 3 groups of patients who had undergone off-pump coronary artery bypass gra...

Considering the growing trend of laryngeal surgeries and the need to protect the airway during and after surgery, among several therapeutic regimens to induce sedation, two regimens of propofol-fentanyl and propofol-midazolam were compared in microlaryngeal surgeries. Forty ASA I-II class patients undergoing microlaryngeal surgeries and referring routinely for postoperative visits were randomly...