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The population of the world is ageing. This has led to an increase in interventions and surgical procedures that would have been unheard of about fifty years ago. In this chapter we discuss the perioperative management of older patients, and the emphasis is on hip fracture patients. Factors such as limited physiological reserve, comorbidities, and the trauma of surgery itself are discussed, together with their perioperative management. The impact of pre-existing dementia and of post-operative delirium and depression is also covered here. The pre-operative management of fluid and electrolyte imbalance, the reversal of anticoagulation before surgery, and the treatment of infections are included. The evidence base around cut-offs for haemoglobin levels acceptable for surgery is also discussed. Finally, the post-operative management of acute kidney injury, infections, myocardial infarction, congestive cardiac failure, post-operative delirium, post-operative cognitive dysfunction, and depression is explored in conjunction with their evidence base.
The direct oral anticoagulants (DOACs) are a relatively new class of drug. This chapter provides prescribers with some general rules for their use, describes which patients are eligible and which are not, and discusses dosing regimens for atrial fibrillation and venous thromboembolism. In addition, the reader can learn about monitoring, interactions and reversal.
The number of patients with autonomic hyperreflexia returning for various surgeries is increasing due to improved medical management of urinary tract and respiratory tract complications in patients with spinal cord injury. This chapter presents a case study of a 44-year-old male who sustained a motor vehicle accident 6 years previously that resulted in paraplegia secondary to T6 spinal cord injury. The surgery was performed under the block and light sedation using midazolam without any complications or significant hemodynamic perturbations. Spinal cord injuries can be caused by either traumatic or nontraumatic causes. Most of these patients survive to return for elective surgeries, most commonly urological and orthopedic procedures. General anesthesia can be employed while maintaining adequate depth using potent volatile anesthetic, narcotics, and systemic sympatholytics to decrease the afferent sensory discharge. Perioperative management of these patients requires knowledge of the risks associated with this phenomenon as well as the pathophysiology.
The role of the anesthesiologist as a perioperative consultant requires a thorough knowledge of current guidelines, a deep understanding of perioperative risk associated with various noncardiac surgeries in order to follow an evidence-based approach to perioperative management. This chapter presents a case study of a 76-year-old male was scheduled for a right carotid endarterectomies (CEA) under general anesthesia after an episode of transient monocular blindness (amaurosis fugax) prompted a duplex ultrasound of the carotid vessels. Preoperative laboratory work-up was significant for a hematocrit of 33 and a serum creatinine of 1.6 mg/dL. The vascular surgeon consulted the anesthesia team for preoperative evaluation. The classification of cardiac risk in noncardiac surgery is based on the incidence of cardiac death and nonfatal myocardial infarction. Patients undergoing vascular surgery have a high incidence of concomitant coronary artery disease and cardiac causes are the most common causes of morbidity and mortality after CEA.
The increasing use of coronary artery angioplasty with deployment of stents for treatment of coronary artery disease poses several dilemmas for perioperative management. These conflicting requirements are manifested most acutely in the management of patients with neurovascular disease. This chapter presents a case study of a 51-year-old female with a past medical history of ischemic heart disease, hypertension, and undifferentiated autoimmune disease with interstitial lung involvement, as an example. The presence of coronary stents in patients undergoing neurosurgical procedures warrants specific consideration prior to anesthesia. It is necessary to balance the risks of stent thrombosis, and the subsequent risk of myocardial infarction, arrhythmia, or cardiac arrest, against the risks of hemorrhage during or after a neurosurgical procedure. There is currently an irresolvable conflict between the risks of with holding and continuing antiplatelet agents in the perioperative period.
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