John E. Tetzlaff

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BACKGROUND AND OBJECTIVES The purpose of this study was to determine whether intra-articular injection of bupivacaine, morphine, or a combination prior to surgery provided pain control after arthroscopic anterior cruciate ligament (ACL) reconstruction. METHODS These data were collected as a two-stage prospective, randomized, blinded observer study. All(More)
EVOKED potentials (EPs) are the electrophysiologic responses of the nervous system to sensory or motor stimulation. Stimulating the nervous system initiates the transmission of neural signals that may be recorded as EPs from various points along the stimulated pathway. Intraoperative monitoring (IOM) of EP has gained popularity because EPs reflect the(More)
BACKGROUND AND OBJECTIVES The incidence of postdural puncture headache (PDPH) after epidural wet tap for obstetric patients may be as high as 75%. We have studied how subsequent placement of a subarachnoid catheter immediately after confirmation of a wet tap, and leaving the catheter in place for 24 hours affects the incidence of PDPH. METHODS Over a(More)
STUDY OBJECTIVE To determine the autonomic changes associated with pneumatic tourniquet-induced hypertension as measured by power spectral heart rate analysis (PSHR). DESIGN Prospective study. SETTING Tertiary teaching hospital. PATIENTS 21 healthy-patients scheduled for lower extremity surgery, during which pneumatic tourniquet inflation was expected(More)
The pharmacology of local anesthetics is an integration of the basic physiology of excitable cells and the mechanism by which local anesthetics are capable of interrupting conduction of neural messages. The common characteristics of the molecules with local anesthetic action have been identified and can explain the properties of the agents. These same(More)
BACKGROUND Obstructive sleep apnea (OSA), which is linked to the prevalence of obesity, continues to rise in the United States. There are limited data on the risk for sedation-related adverse events (SRAE) in patients with undiagnosed OSA receiving propofol for routine EGD and colonoscopy. OBJECTIVE To identify the prevalence of OSA by using the STOP-BANG(More)
Spinal anesthesia provides a safe and highly satisfactory alternative to general anesthesia in patients undergoing limited lumbar surgery. Nevertheless, it is not commonly used for spinal surgery, and in some centers it is not even considered as an option for spinal procedures. This study presents the current anesthetic technique for patients undergoing(More)
STUDY OBJECTIVE To assess the effects of implementing an ambulatory and same-day surgery preoperative evaluation patient triage system over a 3-year period. DESIGN Retrospective analysis of 63,941 ambulatory surgical patients presenting for elective surgery. SETTING Tertiary care, academic medical institution. INTERVENTIONS The following preoperative(More)
We describe the successful anesthetic management of a patient with stiff-person syndrome (SPS) undergoing a right inguinal hernia repair, using a somatic paravertebral block supplemented with conscious sedation. We also present the implications of general anesthesia in patients with SPS. The use of regional anesthetic techniques in patients with SPS has the(More)
PURPOSE Even though clinical safety has been established in large studies, ondansetron has been reported to cause adverse cardiovascular events. We present a case of atrial fibrillation in association with ondansetron in the postoperative period. CLINICAL FEATURES A 47-yr-old, 81 kg female presented with a benign lump in her left breast for lumpectomy.(More)