PRE-,PERI-,POST-OP CARE AND SURGICAL COMPLICATIONS Flashcards
Risk factors for PROPHYLACTIC ANTIBIOTICS:
- Systemic? 4
- Local factors? 4
- Systemic factors
- Diabetes
- Corticosteroid use
- Obesity
- Age - Local factors
- Foreign body
- Electrocautery
- Wound drains
- Injection with epinephrine
Selection of antibiotics
- Should be adminitsered when?
- Most commonly given antibiotics for prophylaxis?
- Gram neg and anaerobic pathogens can be covered by what? 4
- Should be administered 60 min before incision
- Most commonly given drug:
Cefazolin (Ancef, Kefzol) - Gram-neg and anaerobic pathogens can be covered by:
- Cefotetan
- Cefoxitin
- Ceftizoxime
- Each with or without metronidazole (Flagyl)
Diabetic Pt
1. Surgical stress induces a neuroendocrine response which results in what? 3
- Pre-op eval includes assessment of what? 2
- PE? 4
- insulin resistance,
- increased hepatic glucose production, and
- impaired insulin production
- metabolic control and
- any diabetes-associated complications
- Feet
- Minor injuries
- Poor hygiene
- ulcers
Diabetic pt
1. Cardiac
Men have ______ the risk, women have ______ the risk
- Can have hypotension from what?
- Gastroparesis
Delay what? Risk of? - Infection
__________ has effect on immune system - Reduced blood flow decreases what?
- twice, 4x
- cardiac neuropathy
- gastric emptying and aspiration
- Hyperglycemia
- healing
THROMBOEMBOLIC DISEASE
Despite advances in prevention and treatment of what remains most common preventable cause of death? 2
150,000 to 200,000 deaths per year in US
- Risk factors? 4
- VTE, pulmonary embolism
- Risk factors
- Extent of surgery or trauma
- Duration of hospital stay
- Previous VTE
- Immobility
THROMBOEMBOLIC DISEASE Risk model/Caprini score 1. Very low risk scores? 2 2. Low risk scores? 2 3. Moderate risk scores? 2 4. High risk scores? 2
Risk model/Caprini score
- Very low risk
- General and abdominal-pelvic surgery with Caprini score of 0
- Plastic and reconstructive surgery with Caprini score 0-2 - Low risk
- General and abdominal-pelvic surgery with Caprini score of 1-2
- Plastic and reconstructive surgery with Caprini score 3-4 - Moderate risk
- General and abdominal-pelvic surgery with Caprini score of 3-4
- Plastic and reconstructive surgery with Caprini score 5-6 - High risk
- General and abdominal-pelvic surgery with Caprini score of 5 or more
- Plastic and reconstructive surgery with Caprini score of 7-8
THROMBOEMBOLIC DISEASE
1. Prevention: Primary Prophylaxis?
- Selecting appropriate option includes 4?
- Easy to administer
- Safe and effective
- No need for lab monitoring
- Cost effective
2.
- Early and frequent ambulation for patients at very low risk
- Mechanical methods for patients with contraindication to pharmacological prophylaxis at low risk
- Pharmacological for patients at moderate and high risk
- Combination for patients at very high risk
THROMBOEMBOLIC DISEASE
Medications
4
- LMW heparins preferred in high risk patients
- SQ once or twice daily - Low dose Unfractionated heparin (UFH) alternative
- 5000 units two hours pre-op then 8-12hrs post-op SQ - Warfarin
- Alternative to LMW/UFH - Aspirin
THROMBOEMBOLIC DISEASE
- Mechanical methods? 3
- Inferior vena cava filter is used when?
- Mechanical methods
- Intermittent pneumatic compression (IPC)
- Graduated compression stockings (GCS)
- Venous foot pump (VFP) - Inferior vena cava filter (IVC)
- Failure to adequate anticoagulation
- Absolute contraindication to anticoagulation
- CDC has defined an infection related to an operation that occurs at or near the surgical incision within _________ of the procedure, or within ________ if an implant is used
- Most common _________ infection
- Impact? 2
- 30 days, 90 days
- nosocomial
- Increase in mortality
- Increase cost to patient and hospital
SSI
- Epidemiology? 3
- Risk factors? 6
- Epidemiology
- Depend on population
- Size of hospital
- Experience of surgeon - Risk factors
- Surgical technique
- Prolonged surgery time
- Instrument sterilization
- Preop preparation
- Thermoregulation/glycemic control
- Medical condition of the patient
SSI surgical environment risk factors? 4
Surgical environment
- Personnel traffic
- Excessive use of electrosurgical cautery units
- Prosthesis or foreign body
- Need for blood transfusion
SSI presentation? 4
Presentation
- Localized erythema
- Induration
- Warmth
- Pain at incision site
SSI Tx? 3
- Prophylactic antibiotics
- Infected wounds
- Antibiotics
- What kind of antibiotics for tx after already infected?
2. What kind of labs to detect bug? 2
- Broad spectrum antibiotic with coverage of gram positive cocci
- Culture and gram stain reports
SSI Tx: Surgical technique prevention? 5
Surgical technique
- Limit electrocautery
- Closure subq tissue
- Skin closure
- Delayed closure and heal by secondary intention
- Limit hypothermia
HEMATOMA AND SEROMA
- What are these?
- Which is more common?
- Cause what? 2
- Presentation? 3
- Collection of blood or serum under the incision
- Hematomas more common
- Cause
- wound separation and
- infection - Presentation
- Appear a few days after surgery
- Swelling
- Pain
HEMATOMA AND SEROMA
- Tx? 2
- Prevention? 3
- Treatment
- Percutaneous drains
- Wound exploration (Packed and heal by secondary intention) - Prevention
- Closure of dead space
- Meticulous hemostasis
- Placement of drains controversial
FASCIAL DEHISCENCE
- What is it?
- Occur when in the post op period?
- Complication?
- Risk factors? 4
- Abdominal wall tension overcoming tissue or suture strength
- Occur late or early post-op period
- Complications are incisional hernia
- Risk factors
- Age
- Males
- COPD
- Ascites
FASCIAL DEHISCENCE
1. Suture
Main cause is failure to what? 3
- Presentation? 2
- Treatment?
- Prevention? 2
- remain anchored,
- knot failure,
- large stitch intervals
- Profuse serosanguinous drainage
- Popping sensation with abdominal bulge
- Closure in operating room
- Continuous mass closure or interrupted
- Internal or external retention sutures
Wound healing: Primary intention
1. How is the wound managed? 2
- May drain a small amount of what? 2
- Generally kept protected from getting wet with a plastic cover for _____ days depending on wound site, if allowed to get wet—shower only, no bathtub or hot tub
- Monitor for what? 4
- Wound closed with stitches or staples
- Covered w/ sterile dressing
- blood or serosangueness fluid
- 2-10
- erythema,
- swelling,
- warmth and
- drainage
Wound healing: Secondary Intention
1. What are not closed, sometimes other layers not closed allowed to granulate in? 2
- When do we use this? 3
- Should be managed how?
- Epidermas and dermas
- Usually if there has been
- contamination,
- an infected wound,
- peritonitis - Has to be packed daily to every other day w/ saline moistened gauze or sponges and covered w/ a sterile dressing
- Pulmonary complications? 3
- Occurs in what percent of pts?
- Accounts for what percent of peroperative mortality?
- Complications
- Hypoventilation
- Pneumonia
- Atelectasis - Occur in about a third of patients
- Accounts for half of perioperative mortality
CATEGORIES OF PULMONARY COMPLICATIONS:
5
- Atelectasis
- Infection (including bronchitis & pneumonia)
- Prolonged mechanical ventilation & respiratory failure
- Exacerbation of underlying chronic lung dz
- Bronchospasm
Physiology
1. Residual effects of anesthesia & post-op opioids depress what?
- Inhibition of what? 3
- After abdominal and thoracic surgery how are the following affected:
- Vitial capacity?
- Functional residual capacity? - What are these capacity changes due to?
- respiratory drive
- cough,
- impairment of mucociliary
- clearance of respiratory secretions
- After abdominal and thoracic surgery:
- Vital capacity reduced by 50-60%
- Functional residual capacity reduced by 30% - Due to diaphragmatic dysfunction and postop pain
Pulmonary compliction risk factors? 5
- Age: age > 50 yrs independent risk factor
- Chronic lung disease (COPD)
- Asthma: if controlled not a higher risk
- Smoking: > 20 pack year hx higher incidence of postop pulmonary complications
- General health status
What kind of general health problems comtribute to pulmonary complications? 2
- CHF increases risk
2. URI—best to postpone elective surgery until resolved
Pulmonary: Procedure-related risk factors? 4
- Surgical site: abdominal and thoracic (especially upper abdominal)
- Duration of surgery: those lasting > 3-4 hrs
- Type of anesthesia: regional vs general—more complications w/ general
- Type of neuromuscular blockade: using long acting agent (pancuronium) higher risk then w/ short acting agents