Anesthesiologists
43 years of experience

Lowest Greenville
East Tower
6301 Gaston Ave
Dallas, TX 75214
214-217-8001
Locations and availability (2)

Education ?

Medical School
University of London (1967)
Foreign school

Affiliations ?

Dr. Walling is affiliated with 2 hospitals.

Hospital Affilations

Score

Rankings

  • Baylor University Medical Center
    3500 Gaston Ave, Dallas, TX 75246
    • Currently 4 of 4 crosses
    Top 25%
  • Dallas Day Surgery Center
  • Publications & Research

    Dr. Walling has contributed to 15 publications.
    Title Nonlinear Changes in Brain Dynamics During Emergence from Sevoflurane Anesthesia: Preliminary Exploration Using New Software.
    Date December 2006
    Journal Anesthesiology
    Excerpt

    BACKGROUND: New software was used during a pilot study of nonlinear changes in the electroencephalogram during emergence from sevoflurane anesthesia. METHODS: Digitized electroencephalographic signals were recorded from bipolar forehead electrodes between 1.2 and 40 k s/sec. Trajectories derived from underlying attractors were displayed continuously, and attractor dimensions were estimated. Observations are reported from 13 patients emerging from sevoflurane anesthesia. RESULTS: Qualitative observations and quantitative analysis of the data demonstrated four dynamical stages during emergence from deep anesthesia to consciousness. CONCLUSIONS: The dynamical stages of emergence from sevoflurane anesthesia into consciousness demonstrate a classic route toward chaos, but the presence of chaos in the conscious state remains unproven. These stages are apparent both pictorially and analytically. Pre-emergent attractor patterns are usually distinctive; their real-time display could be a useful adjunct to depth of anesthesia monitors because they may provide warning of an imminent return to consciousness.

    Title Consciousness: a Brief Review of the Riddle.
    Date January 2006
    Journal Proceedings (baylor University. Medical Center)
    Title Dimensions of Consciousness.
    Date November 2005
    Journal Proceedings (baylor University. Medical Center)
    Title Converting Ph and H+.
    Date November 1997
    Journal British Journal of Anaesthesia
    Title Successfully Treated Pulmonary Artery Rupture Complicated by Aneurysm Formation.
    Date April 1992
    Journal Journal of Cardiothoracic and Vascular Anesthesia
    Title A Pressure and Volume-limited Inflation Syringe.
    Date August 1989
    Journal Anesthesiology
    Excerpt

    Excessive pressures generated in balloon-tipped pulmonary artery (PA) catheters, which have migrated distally, contribute to the morbidity and mortality associated with their use. A simple syringe modification is described by which additional dead space is added to the inflation syringe. The volume of injected gas is also increased to compensate for the dead space, thus ensuring correct balloon inflation. The added dead space acts as a compression chamber should normal balloon inflation be restricted (Safety Syringe). An additional modification is described in which the syringe nozzle is reduced to a pinhole, thus decreasing the rate of gas escape and lessening the possibility of rapid lateral impact of the balloon on the PA wall (Super Safety Syringe). The syringes were compared with a standard volume-limited syringe. Pressures were recorded at the intraluminal site of balloon contact in rigid tubes, live porcine PA, and human cadaver PA. The Safety Syringe consistently generated pressures of less than 975 mmHg, the lowest pressure at which human PA rupture has been demonstrated, under the most adverse simulated clinical conditions. The currently used volume-limited syringe generated a pressure of approximately 1500 mmHg when balloon inflation was restricted, and in one human cadaver PA, produced rupture. The pinhole modification of the Super Safety Syringe increased the time to generate maximum pressure from less than 0.25 s to about 1.5 s.

    Title Potential Problems with Autotransfusion During Hepatic Transplantation.
    Date May 1989
    Journal Transplantation Proceedings
    Title Preliminary Experience with a Circuit to Increase the Airways Pressure in Adults Breathing Spontaneously.
    Date October 1976
    Journal British Journal of Anaesthesia
    Title A Comparison of Oesophageal and Central Venous Pressures in the Measurement of Transpulmonary Pressure Change.
    Date August 1976
    Journal British Journal of Anaesthesia
    Excerpt

    Oesophageal (oes) and central venous pressure (CVP) were compared as indices of transpulmonary pressure change (deltap). The mean increase of deltaPoes over deltapCVP was 2.8 cm H2O. The size and variability of the increase were similar to the expected difference between oesophageal and pleural pressure fluctuations occurring in the supine patient. Central venous pressure may be more accurate and reliable than oesophageal pressure for estimations of transpulmonary pressure change in the supine position.

    Title Proceedings: The Use of a Central Venous Cannula in the Measurement of Transpulmonary Pressure in Supine Patients During Ippv.
    Date July 1976
    Journal British Journal of Anaesthesia
    Title Intravenous Anaesthesia by Infusion. A Technique Using Alphaxolone/alphadolone (althesin).
    Date March 1976
    Journal Anaesthesia
    Excerpt

    Two hundred and seventy-three patients were anaesthetised using aphaxolone/alphadolone as a sole anaesthetic agent, administered in either a 10% solution or in increments of neat drug. Analgesics were given where necessary. This technique was instituted to provide a method of anaesthesia that avoided pollution of the atmosphere, with its possible harmful effects. As experience was gained, better results were obtained. Overall, 86% of the anaesthetics administered were without problems, 12% presented some difficulty, usually minor movement of the patient, and in 2% this technique was abandoned.

    Title The Effect of Carbon Dioxide on the Neuromuscular and Haemodunamic Effects of Ah 8265, a New Non-depolarizing Muscle Relaxant.
    Date September 1975
    Journal British Journal of Anaesthesia
    Excerpt

    The influence of carbon dioxide on the neuromuscular and haemodynamic effects of AH 8165, a new non-depolarizing muscle relaxant, was determined in nine healthy patients before the onset of minor elective surgery. Five patients (hypocapnic, group I) were maintained at an arterial Pco2 ranging from 25 to 31 mm Hg; four patients (hypercapnic, group II) at a Cco2 from 54 to 57 mm Hg. AH 8165 0.25 MG/KG (one-quarter of the dose required for intubation) was given by rapid central venous injection. Haemodynamic responses were similar in the two groups; there were increases in heart rate ranging from 45 to 60 per cent, increases in mean arterial pressure of 17 - 20 percent, and increases in cardiac output of 22-32 per cent. The intensity of neuromuscular blockade of the forearm muscles after AH 8165 was similar in the two groups, and there was no significant difference in recovery rates; group I patients were 80 percent recovered in 36.6 min. group II patients in 47.3 min. It was concluded that the activity of AH 8165 was not influenced by moderate changes in respiratory acid base status.

    Title Blocked or Non-functioning Cannulae.
    Date June 1973
    Journal British Journal of Anaesthesia
    Title Arterial Blood Pressure Measurement.
    Date June 1973
    Journal British Journal of Anaesthesia
    Title Pneumopericardium Complicating the Treatment of Respiratory-distress Syndrome of the Newborn.
    Date March 1973
    Journal British Journal of Anaesthesia

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