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Surgical Principles Exam 1
Exam 1
82
Medical
Graduate
02/21/2011

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Cards

Term
Where is the greatest risk for a TPN central line?
Definition
closer to the heart
Term
What are crystalloid solutions
Definition
contain electrolytes and non-electrolytes which difuse into all body fluid compartments.  Ex: Ringers Lactate & 5% dextrose in water
Term
When do you start thinking about nutritional supplements?
Definition
48 hrs post op
Term
Best lab to check protein status for nutritional assessment? 
Definition
Pre-Albumin
Term
What fluid is most commonly used for surgery and fluid resuscitation?
Definition
NS & Lactate Ringers
Term
What is normal osmolality
Definition

280-300

 

2xNa+BUN/2.8+glc/18

Term
The purpose of intake and output measurements of patients
Definition
Make sure patient isnt dehydrated or edematous
Term
Avg insensible fluid loss per day in post surgical patients
Definition
500-1000 ml/day
Term
Why is testing Albumin for nutritional status important
Definition
To prevent hypoalbuminemia which is associated with mortality in post-op complications
Term
Why is testing pre-albumin important in determining nutritional status
Definition
Pre-elbumin is increased in renal failure and with steroids and decreased in liver failure and with infection
Term
What is the major intracellular cation
Definition
K+
Term
How are the caloric needs affected in patients having surgry/trauma/burns
Definition
Increased.  Burn patients need 200% above baseline
Term
Calculate water deficit
Definition

TBW=0.5xBW

BWD=TBWx(serumNa-140)/140

Term
When is TPN used
Definition
when enteral feedig can not be donw and bowel recovery >7days
Term
What are the major lines used for TPN and complications
Definition
IJV, SCV, PICC & line infections
Term
Can you use hypertonic solutions in peripheral veins fo nutrition?
Definition
NO.  need to use isosmotic solution.
Term
What are the 4 goals of general anesthesia
Definition
unconsciousness, amnesia, analgesia, NM blockade
Term
What is the best fluid replacement for NG fluid loss by suction
Definition
D5% 1/2NS w/ 20KCl
Term
How do you treat an abscess
Definition
Incision and drainage with regular dressings and antbx
Term
Name types of sutures
Definition
Nonabsorbale, Absorbable, Monfilament, Multifilament
Term
Describe the use, risk and reaction of nonabsorbable sutures
Definition

For interrupted suture

Tensile strength >60days, walled off by bodys fibroblasts & remain encapsulated.  Used when h/o rxn to absorbable sutures

For prosthetic atachment

Nylon, silk, stainless steel, prolene, polyester

Term
Describe the use, reaction risk and size of absorbable sutures
Definition

Tensile strength <60days, used to hold edges together temporarily, maybe treated chemically to lentghen aborption time, colored artificially, digested naturally by body enzymes

vicryl, dexon, PDS, plain gut, chromic gut

Term
Name types of surgical wounds
Definition

Clean - uninfected, no resp or GU tracts entered

Clean/containated - uninfected, resp or GU tracts entered

Contaminated - open wounds with GI spillage causing infection

Dirty contaminated - infecetd prior to operation, heavily contaminated

Term
Factors affecting wound healing
Definition
cold, pain, hypovolemia, fear, b-blockers, cigarettes, hypoxemia, age, weight, nutritional status, blood supply, immune responses, chronic diseases, radiation therapy, inadequate closure
Term
Decubitus ulcers
Definition
bedspores or pressure ulcers
Term
Primary suture closure
Definition
Closure with suture; hairline scar
Term
Secondary suture closure
Definition
Not surgically closed
Term
delayed tertiary closure
Definition
 For management of contaminated & dirty, infected wounds where tissue loss is extensive & chances of infection high. Debride  nonviable tissue and leave wound open & covered by (wet) gauze If there is no evidence of infection after 3-5 days, wound is sutured
Term
Signs & symptons of SSI
Definition

occurs w/in 30 days usually btw day 5-10

Accompanied by purulent discharge and one of the following: pain, tenderness, local swelling, redness, heat, fever, erythema >2cm, fluctuance, dehiscance

Term

Local anesthesia

 

Definition
any technique to render part of the body insensitive to pain without affecting consciousness.  i.e. lidocaine
Term
Topical anesthesia
Definition
local anesthetic that is used to numb the surface of a body part.  i.e. EMLA cream patch
Term
Regional anesthesia
Definition
anaesthesia affecting only a large part of the body, such as a limb.  Lung fxn preserved.  Blood loss minimized.  Aspirate before injection
Term
MAC (monitored anesthesia care)
Definition
often referred to as twilight sleep, is a type of light anesthesia used for minor procedures
Term
General anesthesia
Definition
unconsc, amnesia, analgesia, NM blockade, w/in 3-5 min
Term
Spinal anesthesia
Definition
into intrathecal space; headache common and hypotension may occur.  block innervation of bladder
Term
Epidural
Definition
into extradural space.  mm fxn preserved
Term
Most common side afect of general anesthesia
Definition
nausea
Term
Time needed for blood typing and crossmatching
Definition
5 min for typing and 45 min for cross matching
Term
What blood type is the universal donor
Definition
O-
Term
What blood type is the universal recipient
Definition
AB+
Term
Most important part of pre-op evaluation
Definition
HISTORY
Term
DVT risks
Definition

Cancer/Contraceptives

Obesity

Myocardial dysfunction

Prior Hx of DVT

Age >45

Surgery

Travel/Trauma

Term
Seroma
Definition
collection of fluid other than pus or blood
Term
Hematoma
Definition
collection of blood
Term
Wound dehiscence
Definition
partial or total disruption of any or all layers of operative wound
Term
Major cause of fat embolus
Definition
Closed frx of long bone
Term
ASA classifications of patient risk before surgery
Definition

1. No issues

2. mild-mod issue may/may not related (diabetes)

3. Severe issue may/may not related (HTN, heart disease)

4. Severe life threatening issie w/ or w/o surgery (CHF, angina)

5. Litle chance of survival, surgery last resort (ruptured aneurysm)

E - pt needs emergency operation

Term
Common infection 2nd to atbx use
Definition
C. dif
Term
W's of post surgical causes of fever
Definition

Wind (atelectasis most commong)

Wound (SSI)

Water (UTI or sepsis)

Walking (thrombo)

Wonder drug (Rx rxn)

Whopper (deep abscess)

Term
Are you allowed to take instruments off the Mayo tray
Definition
No
Term
Does the patient have hairy areas shaved w/ a razor before surgery?
Definition
Electric shaver day of surgery
Term
If pt is allergic to betadine what else can be used
Definition
Chlorhexidene
Term
Single or double glove for surgery
Definition
Double
Term
Maximum amount of plain lidocaine that can be safely injected into adult pt
Definition
4.5mg/kg not to exceed 300 mg
Term
Max amount of lidocaine w/ epi safely injected into an adult pt
Definition
7 mg/kg not to exceed 500 mg
Term
When to intubate on Gladcow Coma score
Definition
3-8 intubate
Term
Soot in nose and mouth needs?
Definition
intubation
Term
Parkland formula
Definition

4mlxBSA%xkg=adults

3mlXBSA%xkg=kids

Term
First degree burn
Definition
epidermis only.  no blisters
Term
2nd degree burn
Definition
into dermis but not through dermis
Term
3rd degree burn
Definition
destruction of epidermis and dermis
Term
Name 4 categories of shock
Definition

Hypovolemic

Distributive

Cardiogenic

Obstrtuctive

Term
How are lab tests affected in shock
Definition

BUN and Cr are increased

La- is increased

Glucose is increased

Term
Treatment of Hypovolemic shock
Definition
control bleeding, blood transfusion if loss >20%, isotonic electrolytes, AVOID vasopressors
Term
TReatment of Cardiogenic shock
Definition
Reversal of undelrying disease (ischemia, LV critical mass >40%); diuretics and vasodilators to reduce pre and afterload; b-blockers reduce myocardial O2 consumption, inotropic agents increase myocardial contractility, IABP if hypotensive and not responsive
Term
Tx of distributive shock
Definition
control etiology by antbx, epi, antihx, steroids, volume expansion, support organ fxn, AIRWAY
Term
Tx of obstructive shock
Definition
Needle decompression, chest tube (tension pneumothorax); volume expansion, pericardiocentesis (cardiac tamponade); inotropic agents, thrombolysis, embolectomy-rare (pulmonary embolism)
Term
Signs and symptoms of a patient in shock
Definition

alterd mental status, HR>100 bpm, RR >22bpm, PCO2 <32mmHg, La->4mmol/L; Urine output <0.5cc/kg/hr, SBP <90mmHG for >20 min, arterial base deficit >5mEq/L

**4 of these symptoms must be present

Term
When does pt begin to have BP changes w/ fluid loss
Definition
1500-2000cc
Term
At what fluid level does HR change in hypovolemic shock
Definition
750-1500cc
Term
What is FAST
Definition

Focused Assessment with Sonography for Trauma

cheap, fast, effective, easily reproducible

Term
Tx for tension pneumothorax
Definition
immediate decompression w/ 14 gauge catheter 2nd MCICS
Term
What constitutes and is the treatment of flail chest
Definition
Frx of rib in >2 places.  Treat by intubation.  Think thoracic aortic anurysm/rupture
Term
Becks triad for cardiac tamponade
Definition
Hypotension, venous distention, muffled heart sounds
Term
Most common cause of life threatening hemorrhage in automobile accidents
Definition
Splenic rupture
Term
3 indications for damage control surgery (Triad of death)
Definition
Hypothermia, coagulopathy, acidosis
Term
3 goals of damage control surgery
Definition
Hemorrhage control and repair of vascular injuries, stop GI contamination, temp abdominal wound closure
Term
3 stages of abdominal damage control surgery
Definition

Stage I - limited operation for control of hmorrhage and contamination

Stage II - resuscitation in ICU

Stage III - reoperation

Term
3 types of hip frxs
Definition

Intertrochanteric

neck of femur

head of femur

Hip had EBL od 8-10 units

Term
Difference btw Gustilo and Tscherne classifications systems
Definition
Gustilo is commonly use din open frx and emphasizes on size of skin injury.  Tscherne is based on extremity of soft tissue damage
Term
How to classify exercise tolerance in regards to surgical survival
Definition
poor exercise tolerance = inability to climb 2 flights of stairs or walk 4 blocks
Term
When is it safe to take a patient for elective surgery after angioplasty? Bare metal stent? Drug eluding stent?
Definition

Balloon angioplasty <14d since PCI

Bare metal stent <30-45d since PCI

Drug eluding stent < 365d since PCI

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