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C B Watson

Publications and source records attributed to C B Watson.

5 recordsLinked to original sources

Is routine preoperative hemodynamic evaluation of nonagenarians necessary?

An Incidence of co-morbid cardiac disease in the elderly surgical patient as high as 66% has been previously reported. Even in the absence of clinically significant cardiac disease, advanced age alone is often considered sufficient indication for Swan-Ganz placement, hemodynamic evaluation, adjustment of fluid states, and inotropic support. Yet data clearly documenting the need for this evaluation and therapy are difficult to obtain. All major general surgical and orthopedic operations in non-agenarians were reviewed in our institution from July 1, 1987 through December 31, 1988. Fifty-one procedures were performed on 46 patients. None of these patients had preoperative Swan-Ganz catheterization or hemodynamic evaluation. Eighteen general surgical, 30 orthopedic, 2 neurosurgical, and 1 gynecological procedures were performed. Forty-three were performed under general anesthesia, 7 under spinal anesthesia, and 1 with local anesthesia. Seven out of 51 patients (14%) experienced major complications, and 16 out of 51 (31%) experienced minor complications. Thirty-day mortality was 0%, and 6-month survival was 92%. Only one complication occurred within 48 hours of surgery that might possibly have been prevented with hemodynamic evaluation, adjustment of fluid status, inotropic support, and intensive care unit monitoring.

Aged

Changes in plasma atrial natriuretic peptide--immunoreactivity in patients undergoing coronary artery bypass graft placements.

Plasma atrial natriuretic peptide immunoreactivity (IrANP) was measured before, during, and after cardiopulmonary bypass for coronary artery bypass graft placement. Eight subjects scheduled for elective operation had in the premedicated preoperative state slightly elevated IrANP compared to controls. Neither induction of anesthesia with a high dose narcotic/non-depolarising relaxant/diazepam technique nor cardiopulmonary bypass changed IrANP significantly. Mixed venous and arterial IrANP increased immediately after discontinuing bypass, and remained elevated 1 h later. Because ANPs affect peripheral resistance as well as urinary sodium loss, the post-bypass elevations in these peptides may contribute to cardiovascular and diuretic effects after cardiopulmonary bypass.

Anesthesia

Anesthesia for tonsillectomy and adenoidectomy.

Despite advances in the anesthetic pharmacopeia and improved noninvasive monitoring techniques, subjective bias and individual clinical experience remain major determinants of individual practice. Medicolegal pressures have increased in recent years, as has the concept of shared responsibility for surgical and anesthetic complications. New standards of anesthesia monitoring and practice are evolving in response to the need for perioperative risk management and cost-effective surgical care. Continued vigilance and close communication between the otolaryngologist and anesthesiologist remain key elements for safe anesthetic practice.

Adenoidectomy

Anesthesia for trauma.

This article presents basic anesthetic management problems and procedures together with newer anesthetic drugs and monitoring techniques that are likely to be encountered by intensive care physicians. The author's goal is to familiarize all critical care unit based members of the resuscitation team with current aspects of anesthetic management of the trauma patient.

Anesthesia