David O. Warner

Development of an LSTAT Venilator. (1998)

Warner, David O.

There is a critical need for a small, portable device to provide ventilatory support to critically-ill battlefield casualties. The goal of this work is to develop a prototype ventilator suitable for...

Development of an LSTAT Ventilator. (1998)

Warner, David O.

There is a critical need for a small, portable device to provide ventilatory support to critically-ill battlefield casualties. No prior device is available which can operate independently of...

Epidural anesthesia and intrathoracic blood volume. (1993)

Warner, David O, Brichant, Jean-François, Ritman, Erik L, Rehder, Kai

To investigate how epidural anesthesia changes intrathoracic gas volume, high epidural anesthesia was administered to five pentobarbital-anesthetized dogs lying supine, and the total intrathoracic...

Chest wall motion during epidural anesthesia in dogs. (1991)

Warner, David O, Brichant, Jean-François, Ritman, Erik L, Rehder, Kai

To determine the relative contribution of rib cage and abdominal muscles to expiratory muscle activity during quiet breathing, we used lumbar epidural anesthesia in six pentobarbital...

Halothane, enflurane, and isoflurane depress the peripheral vagal motor pathway in isolated canine tracheal smooth muscle. (1991)

Brichant, Jean-François, Gunst, Susan J, Warner, David O, Rehder, Kai

Volatile anesthetics are potent bronchodilators, but the site of action for the dilation is unclear. To determine the site of action of halothane, enflurane, and isoflurane on the peripheral vagal...

Muscarinic receptor subtypes in canine trachea. (1990)

Brichant, Jean-François, Warner, David O, Gunst, Susan J, Rehder, Kai

Prejunctional and postjunctional muscarinic receptor subtypes were characterized in canine trachealis muscle strips. In vitro contractile responses of muscle strips to acetylcholine or electric field...

Direct and neurally mediated effects of halothane on pulmonary resistance in vivo. (1990)

Warner, David O, Vettermann, Jörg, Brichant, Jean-François, Rehder, Kai

It has been suggested that halothane inhibits contraction of airway smooth muscle in vivo mainly by reducing reflex activity in nerves innervating the muscle with only minimal direct effects on the...

Halothane decreases both tissue and airway resistances in excised canine lungs. (1989)

Vettermann, Jörg, Warner, David O, Brichant, Jean-François, Rehder, Kai

Studies of the anesthetic effects on the airway often use pulmonary resistance (RL) as an index of airway caliber. To determine the effects of the volatile anesthetic, halothane, on tissue and airway...

Nicotine increases initial blood flow responses to local heating of human non-glabrous skin

Warner, David O, Joyner, Michael J, Charkoudian, Nisha

Nicotine affects the regulation of skin blood flow (SkBF), but the mechanisms involved are not well understood. We tested the hypothesis that acute exposure to nicotine inhibits both the initial...

Nicotine increases initial blood flow responses to local heating of human non-glabrous skin

Warner, David O, Joyner, Michael J, Charkoudian, Nisha

Nicotine affects the regulation of skin blood flow (SkBF), but the mechanisms involved are not well understood. We tested the hypothesis that acute exposure to nicotine inhibits both the initial...

Stereospecific effects of ketamine enantiomers on canine tracheal smooth muscle

Pabelick, Christina M, Rehder, Kai, Jones, Keith A, Shumway, Robin, Lindahl, Sten G E, Warner, David O

Ketamine is a potent bronchodilator which relaxes airway smooth muscle (ASM). Clinically, ketamine is used as a 1:1 racemic mixture of enantiomers that differ in their analgesic and anaesthetic...

F-actin stabilization increases tension cost during contraction of permeabilized airway smooth muscle in dogs

Jones, Keith A, Perkins, William J, Lorenz, Robert R, Prakash, Y S, Sieck, Gary C, Warner, David O

Dynamic actin reorganization involving actin polymerization and depolymerization may play an important functional role in smooth muscle.This study tested the hypothesis that F-actin stabilization by...

Prolonged treatment of porcine pulmonary artery with nitric oxide decreases cGMP sensitivity and cGMP-dependent protein kinase specific activity

Perkins, William J., Warner, David O., Jones, Keith A.

A cultured porcine pulmonary artery (PA) model was used to examine the effects of prolonged nitric oxide (NO) treatment on the response to acutely applied NO, cGMP analog, or atrial natriuretic...