Pre And Post Op Dr Bishoy Flashcards
Function of heparin
Formation of complex between antithrombin and activated thrombin factor 7,9,10,11,12
Antidote of heparin
Protamine sulfate but has risk of hypersensitivity reaction
Antidote of heparin
Protamine sulfate but has risk of hypersensitivity reaction
Clearing time of low molecular heparin
Within 2 hours
But must be stoped 6 hours before surgery
Clearing time of low molecular heparin
Within 2 hours
But must be stoped 6 hours before surgery
Antidote of benzodiazepine
Flumazenil
By completing at GABA binding site
Propofol
Rapid onset
Antiemetic
Moderate myocardial depression
Thiopental sodium
Extremely rapid onset so rapid induction
Rapid metabolism so not for maintenance
*Marked myocardial depression
Little analgesic effect
Ketamine
Nightmare
Little myocardial depression
Etomidate
Loves heart but hates Adrenal
(Favourable cardiac profile but adrenal suppression)
No analgesia
Not emecics
Before and after thyroid surgery we should check….
Vocal cord function
What is used for visualizing parathyroid during surgery
Methylene blue
Which drugs needed for pheochromocytomas
Alpha and beta blockers
Drug needed for coverage during carcinoma tumor
Octreotide
Bowl preparation needed for which type of colorectal surgery
Left side surgery
Stages of wound healing
Hemostasis: minutes to hours
Inflammation: one to five days
Regeneration: seven days to two months
(Fibroblast growth factor and Platelet derived growth factor stimulates Fibroblast to produce collagen and angiogenesis occurs)
Remodeling: six weeks to one year
(Fibroblast differentiates into myofibroblast and this facilitates wound contraction also there is regression of blood vessels)
Importance of inferior epigastric artery during surgery
Maybe injured during laparoscopy port insertion of drainage tube
Nerve injury during pelvic surgery and it’s effect
Pelvic autonomic nerve and this may cause impotence
Name of Formula for fluid requirement and calculation in children and young people
Holiday-Segar formula
For first 10 kg:100ml/kg/day
Next 10 kg:50ml/kg/day
Above 20kg:20ml/kg/day
For a week
1st day 50-60ml/kg/day(roughly)
2nd day add 10 ml so 60-70 ml/kg/day
3rd another 10ml upto 100 ml top
Time of transfusion of platelet in ITP patient during splenectomy
Just after ligation of splenic artery
Too soon will be ineffective
Too late will cause bleeding
Time of transfusion of platelets in ITP patient during splenectomy
Just after ligation of splenic artery
Too soon will be ineffective
Too late will cause bleeding
Action of warfarin
On vitamin K
So inhibiting factor 2,7,9,10 and protein C
Analgesia after orchidopexy
*Cadudal block is very effective
But spinal block and epidural block will be inspiring,TAP(trans abdomen plane) block may cover inguinal canal but not generally reliable
What to do in an old man of prostate cancer with vertebral body metastasis not responding to analgesia?
Radiotherapy to lumber spine
What are the compliications of TURP (trans urethral resection of prostate)?
Urethral stricture
Retrograde ejaculation
Perforator of prostate
Cause of TURP syndrome
This occurs when too much of the fluid (normal saline/glycine) used to wash the area around the prostate during the procedure is absorbed into the bloodstream. Initial symptoms of TURP syndrome include: feeling or being sick. confusion.
What are the triads of TURP/TUR syndrome and triads of symptoms?
Hyponatremia
Fluid overload
Glycine toxicity
Symptoms-
Hypertension
Beautiful
Changes in mental status
Route of administration of dopamine and dobutamine for inotropic effect
Via central line with close monitoring
Most commonly used inotropes
Dobutamine
Dopamine
Glucagon
Basic ports makes of laparoscopic surgery
Mainly 3
Section
Radiation
Instrumentation
Broviac line vs Hickman line
Port of Broviac in tunneled under skin so less chance of infection than Hickman’s outside skin port
A Broviac/Hickman central venous line is a special intravenous (IV) line inserted under the skin on the chest wall and into a large vein that leads to the heart. It’s used in children and teens who need IV therapy for a long time. CVLs are helpful for: • chemotherapy and other medications.
While smaller lumen Broviac catheters have been used successfully for blood withdrawal, their small lumen sizes increase the chance of clotting.The larger Hickman single- lumen catheter is intended for both infusion of I.V.fluids, medications, and nutritional solutions, and for withdrawal of blood samples.
Broviac line vs Hickman line
While smaller lumen Broviac catheters have been used successfully for blood withdrawal, their small lumen sizes increase the chance of clotting.The larger Hickman single- lumen catheter is intended for both infusion of I.V.fluids, medications, and nutritional solutions, and for withdrawal of blood samples.
What is the difference between a peripheral IV and a central venous catheter?
Central lines and peripheral IVs enter your body through different veins. Central lines enter a large vein in your chest, neck, arm or groin. It’s usually a deep vein that’s not close to the surface of your skin. Peripheral IVs enter a vein close to your skin’s surface in your hand or arm.
Toxicity of aminoglycoside
Ototoxicity
Nephrotoxicity
Risk factors of DVT
Surgery greater than 90 minutes at any sites
Surgery greater than 60 minutes at hips and lower limbs
Acute inflammatory process in abdominal cavity
Expected significant reduction in mobility
Age over 60
Known malignancy
Thrombophilia
Previous thrombosis
BMI>30
Taking HRT or even contraceptives
Varicose veins with phlebitis
How to do mechanical thromboprophylaxis?
Early mobilization after surgery
Compression stockings(contraindicated in peripheral s artery disease)
Intermittent pneumatic compression device
CAUSES of voice and respiratory difficulty after thyroid surgery
Recurrent laryngeal nerve injury
Laryngeal edema
Confined hematoma(Rx: put drain tube)
Contraindications of lidocaine
Cardiac arrhythmia
With anti arrhythmic drugs
What to do immediately in hypervalent
Fluid resuscitation by normal saline and sometimes adding diuretics with normal saline
ECG changes in hypercalcemia
Shortening of QT interval
Disease like drug for neuropathic passion
Pregabalin