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Introducción a la Clase de Manejo Perioperatorio

Comienzo de la Clase

• El doctor inicia la clase explicando que se abordarán temas importantes sobre el manejo perioperatorio, incluyendo las fases pre, intra y postoperatorias.

• Se mencionará también la anatomía general de la cavidad abdominal, el peritoneo y el mesenterio, así como su relación con los órganos.

Importancia del Manejo del Paciente

• Se enfatiza que el manejo intraoperatorio es crucial, pero igual de importante es cómo se maneja al paciente desde el primer contacto.

• La construcción de una relación de confianza con el paciente es fundamental para un tratamiento exitoso.

Construyendo Confianza con los Pacientes

Estrategias para Relacionarse con Pacientes

• Se aconseja tratar a los pacientes como si fueran familiares cercanos para fomentar una atención empática y cálida.

• La calidad en la atención médica no solo depende del conocimiento técnico, sino también de la empatía y calidez en las interacciones.

Impacto en la Elección del Cirujano

• Los pacientes tienden a elegir cirujanos basándose más en la confianza que en la experiencia técnica; esto resalta la importancia de construir relaciones sólidas.

Fases del Manejo Perioperatorio

Preoperatorio

• El preoperatorio incluye preparar al paciente mediante exámenes diagnósticos para confirmar o descartar presunciones diagnósticas.

Intraoperatorio y Postoperatorio

• Durante el intraoperatorio se realiza la intervención quirúrgica; mientras que el postoperatorio abarca cuidados inmediatos como manejo del dolor y administración de medicamentos.

Identificación de Problemas Médicos Previos

Evaluación Previa a Cirugía

• Es esencial identificar cualquier patología existente antes de operar, especialmente en pacientes electivos donde hay tiempo para optimizar su condición.

Comunicación Efectiva

• La comunicación bidireccional entre médico y paciente es clave; ambos deben estar informados sobre condiciones médicas relevantes y riesgos asociados.

Evaluaciones Especializadas Antes de Cirugía

Riesgos Cardiológicos y Neumológicos

• Se recomienda realizar evaluaciones cardiológicas (electrocardiogramas), así como neumológicas (radiografías), para determinar riesgos antes de proceder con cirugía.

Establecimiento del Plan Quirúrgico

• Un plan claro debe ser establecido donde se explique al paciente su diagnóstico, procedimiento quirúrgico propuesto y posibles riesgos involucrados.

Consent and Emergency Situations in Medical Procedures

Importance of Informed Consent

• The necessity for patients to be informed about their medical procedures is emphasized, highlighting the legal requirement for informed consent.

• Nayeli Castillo mentions that informed consent can be waived in emergency situations where the patient is unconscious.

Emergency Scenarios

• An example is provided where a patient, potentially a victim of an accident, arrives unconscious. Immediate surgical intervention is necessary to save their life.

• Documentation of such emergencies involves a medical board meeting with various specialists to make legal decisions regarding treatment without prior consent.

Special Cases for Consent

• In cases involving minors or patients unable to provide consent, family members are consulted for informed consent.

Preoperative Testing Protocol

Standard Tests Required Before Surgery

• A list of standard preoperative tests includes glucose levels, complete blood count (CBC), coagulation profile, and serological tests like HIV and syphilis screening.

Specific Tests Based on Conditions

• For surgeries related to the gallbladder or hepatobiliary issues, additional specific tests such as liver enzymes are requested.

Blood Management Considerations

Hemoglobin Levels and Surgical Risks

• It’s generally desirable for hemoglobin levels to be above 10 g/dL; however, surgery may proceed with lower levels if clinically justified.

Diabetes Management Prior to Surgery

• Diabetic patients should have glucose levels managed below 150–180 mg/dL before surgery; otherwise, procedures may be postponed until stable.

Understanding Blood Loss During Surgery

Signs of Blood Volume Loss

• The first sign of significant blood loss in patients is often tachycardia (increased heart rate), which occurs before hypotension (low blood pressure).

Patient Monitoring Techniques

• Patients' responses during monitoring include assessing orthostatic changes when standing quickly from a lying position; however, this method has limitations in practice.

Surgical Risk Assessment

Classification of Surgical Risks

Risk Categories Defined by Anesthesiologists

• The American Society of Anesthesiologists developed risk categories ranging from RQ1 (healthy individuals undergoing minor surgery with low mortality risk) to RQ6 (patients who are brain dead).

Detailed Breakdown of Risk Categories

• RQ2 includes patients with mild systemic disease but no functional limitations. RQ3 indicates severe systemic disease with some functional impairment but not immediately life-threatening.

Critical Condition Patients

• RQ5 represents moribund patients facing high mortality risks during surgery. Discussions around these cases involve transparency with families regarding potential outcomes.

This structured summary captures key insights from the transcript while providing timestamps for easy reference.

Considerations for Surgical Patients

Overview of Patient Conditions

• Discusses various patient conditions requiring surgical intervention, including hernioplasty and chronic renal insufficiency with appendicitis.

• Highlights the complexity of managing patients with multiple comorbidities, such as mild hypertension and gallbladder surgery.

Critical Surgical Decisions

• Emphasizes the urgency in operating on patients with severe cirrhosis and strangulated hernias, noting that these cases are often life-threatening.

• Mentions the ethical considerations when operating on moribund patients, where surgery may be seen as a heroic act despite low survival chances.

Managing Septic Patients

Challenges in Surgery

• Addresses the necessity of surgical intervention in septic patients with disseminated intravascular coagulation (DIC) and complicated appendicitis.

• Discusses risk assessment protocols for emergency surgeries involving abdominal trauma, highlighting the need for immediate action regardless of patient stability.

Cardiac Risk Assessment

Evaluating Cardiac Health

• Stresses the importance of identifying pre-existing cardiac conditions before surgery to assess stability and treatment options available to patients.

• Notes that an electrocardiogram evaluated by a cardiologist is crucial for determining surgical risk; cardiologists can recommend against surgery if necessary.

Preoperative Testing Requirements

• Indicates that further tests like echocardiograms or stress tests may be required to evaluate functional reserve before proceeding with surgery.

• Warns about potential complications from surgeries in elderly patients or those with pacemakers due to electrocautery risks during procedures.

Hypertension Management Before Surgery

Importance of Blood Pressure Control

• Describes hypertension as a prevalent issue among urban populations, emphasizing its management prior to surgical procedures to avoid complications during operations.

• Advises against operating on hypertensive patients whose blood pressure remains uncontrolled despite treatment adjustments made preoperatively.

Monitoring During Surgery

• Highlights the critical nature of maintaining controlled hypotension during operations while avoiding severe drops in blood pressure which could endanger patient safety.

Pulmonary Function Evaluation

Assessing Respiratory Health

• Discusses the significance of evaluating pulmonary function through tests like PAFI (PaO2/FiO2 ratio), especially for high-risk surgical candidates needing respiratory support assessments.

Renal Function Considerations

Kidney Health Impact on Surgery

• Emphasizes that poor kidney function can severely impact surgical outcomes; nephrology consultations are essential for managing dialysis-dependent patients preoperatively.

Diabetes Management Prior to Surgery

Blood Sugar Control Strategies

• Advises suspending metformin use on the day of surgery while managing diabetic patients' glucose levels carefully to prevent hypoglycemia during procedures.

This structured summary captures key insights from discussions regarding preoperative evaluations across various health conditions relevant to surgical candidates, providing a comprehensive overview linked directly to specific timestamps for easy reference.

Evaluating Liver Function in Surgical Patients

Importance of Assessing Liver Function

• The evaluation of liver function is crucial before subjecting a patient to significant metabolic stress, such as surgery.

• Classification of hepatic insufficiency due to cirrhosis involves various parameters, including age and type of surgery.

Risk Factors for Thromboembolic Events

• Key risk factors for thromboembolism include age, neoplasms, immobility, prolonged surgeries, trauma, previous thromboembolic episodes, and sepsis.

• Additional risks involve pregnancy, oral contraceptives, cardiac disease, nephrotic syndrome, and hypercoagulability conditions.

Preventive Measures Against Thrombosis

• Use of progressive compression elastic stockings or pneumatic devices can help prevent venous thrombosis during long surgeries.

• Septic patients are at higher risk for thrombus formation leading to deep vein thrombosis or pulmonary embolism.

Managing Anticoagulation Before Surgery

Aspirin Usage Prior to Surgery

• Patients on aspirin should suspend its use 5 to 7 days before surgery to ensure proper coagulation.

• Failure to inquire about aspirin usage can lead to complications during surgical procedures.

Surgical Considerations During Pregnancy

• Elective surgeries should ideally be postponed until after pregnancy; however, certain conditions like gallbladder colic may necessitate intervention during the second trimester.

Timing for Elective Surgeries Post Myocardial Infarction

Guidelines for Surgery After Heart Attack

• The timing for elective surgery post-myocardial infarction varies by individual circumstances; generally recommended after three months if possible.

Monitoring INR Levels in Anticoagulated Patients

Warfarin Management Pre-Surgery

• For patients on warfarin undergoing elective surgery, it’s essential to monitor INR levels closely.

• Warfarin should be suspended on the day of surgery while aspirin requires cessation 5–7 days prior.

Anatomy Overview: Abdominal Cavity

Understanding Abdominal Structures

• The abdominal cavity contains critical structures including the diaphragm above and perineal muscles below.

• Anatomical divisions include nine regions: right/left hypochondrium, epigastrium (upper), mesogastrium (middle), and hypogastrium (lower).

Organ Locations within the Abdomen

• Key organs are located in specific quadrants: liver and gallbladder in the right hypochondrium; stomach in the epigastrium; spleen in the left hypochondrium.

Anatomía del Peritoneo y su Función

Estructura del Peritoneo

• El peritoneo se divide en dos tipos: parietal, que cubre la pared abdominal, y visceral, que recubre las vísceras.

• El peritoneo tiene un alto grado de absorción y se utiliza en diálisis para pacientes renales.

• Se identifican órganos intraperitoneales (como el ciego y el colon transverso) frente a los extraperitoniales (ascendente y descendente).

Funciones del Peritoneo

• Actúa como un aislante térmico, protector y facilita el intercambio de líquidos.

• La diferencia entre el peritoneo parietal (cubriendo la pared abdominal) y visceral (cubriendo vísceras).

Mesenterio y Estructuras Relacionadas

Organización del Colon

• El mesenterio es una duplicatura del peritoneo parietal que permite la irrigación de los órganos.

• Los epiplones incluyen ligamentos importantes como el hepato gástrico y hepatoduodenal.

Importancia Clínica

• Conocer estas estructuras es crucial para entender procedimientos quirúrgicos relacionados con el abdomen.

Protocolos Quirúrgicos Modernos

Introducción a ERAS

• Un grupo de cirujanos daneses ha desarrollado protocolos basados en evidencia para mejorar la recuperación postoperatoria.

Estrategias Preoperatorias

• Se enfatiza evitar sobrecarga de carbohidratos y ayuno prolongado antes de cirugía.

Cambios en Prácticas Quirúrgicas

• Se discuten cambios significativos en prácticas preoperatorias e intraoperatorias para optimizar resultados.

Preparación Preoperatoria

Nuevas Perspectivas sobre Ayuno

• La duración del ayuno previo a la cirugía ha cambiado; líquidos no retienen mucho tiempo en el estómago.

Preparación Mecánica del Colon

• Ya no se recomienda preparación mecánica con laxantes o enemas antes de ciertas cirugías.

Manejo Intraoperatorio

Anestesia y Profilaxis

• Uso preferido de anestésicos de vida media corta; se evita drenajes como norma general.

Normotermia Postquirúrgica

• Mantener normotermia usando calentadores corporales durante la cirugía es esencial.

Consideraciones Postoperatorias

Manejo del Dolor

• Se promueve analgesia epidural multimodal evitando opioides cuando sea posible.

Alta Temprana

• Aplicar estrategias adecuadas puede reducir hasta 7 días la estancia hospitalaria tras cirugía.

Preguntas Finales sobre Sondas Nasogástricas

• , En casos excepcionales, como obstrucciones intestinales, se justifica dejar sondas nasogástricas temporalmente.