AIMS The study set out to assess the relative contributions of donor heart rate, respiration and recipient atrial contraction on the mean of pulsed wave transmitral Doppler flow indices in orthotopic heart transplant recipients. This would provide information on the theoretical usefulness of pacemaker synchronization of recipient atrial contraction, as well as on the validity of certain strateg...

The monkey (Macacus rhesus) usually tolerates readily the repeated intraspinal injection of large doses of 0.3 per cent. tricresol antimeningitis serum. The spontaneous respiration is generally not disturbed. Doses of 0.3 per cent. tricresol serum as large as 8 c.c. per kilo were injected intraspinally with subsequent recovery, even when the monkey had a partial pneumothorax. Dangerous alterati...

Background. Correct volume management is essential in patients with respiratory failure. We investigated the ability of respiratory variations in noninvasive pulse pressure (ΔPP), photoplethysmographic waveform amplitude (ΔPOP), and pleth variability index (PVI) to reflect hypovolemia during noninvasive positive pressure ventilation by inducing hypovolemia with progressive lower body negative p...

BACKGROUND Noninvasive positive pressure ventilation (NPPV) using a face mask is the ventilatory mode of choice in selected patients experiencing acute exacerbation of chronic obstructive pulmonary disease (COPD). A high incidence of intolerance limits the use of this approach. OBJECTIVE To evaluate the sequential use of mask and helmet during NPPV in patients with severe exacerbation of COPD...

a rigor and during some bouts there was a daily rigor. Examination showed a well-developed man. There was marked emaciation. Temperature 99; pulse 105; respiration 26; blood pressure 90/60. Examination of the abdomen revealed a lump situated in the left hypochondriac and left lumbar regions, extending from about 1^ inches below the left costal margin to the level of the umbilicus. It moved slig...

The efficacy of two triggering systems was compared during neonatal patient triggered ventilation: the Graseby MR10 respiration monitor and airway pressure changes. Ten preterm infants were studied, median gestational age 33 weeks (range 28-35). Patient triggered ventilation was administered via the SLE ventilator at a series of inflation times (0.24, 0.3, and 0.4 seconds). Comparison was made ...