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If your pregnant patient experiences initial "tearing" pain, then has relief from pain, then experiences pain during contractions only, what may she be presenting with?
Uterine rupture
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If your pregnant patient experiences a "tearing" pain without relief between contractions, what may she be presenting with?
Abruptio Placenta
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How should you treat a pregnant patient with third trimester bleeding?
- Treat for shock
- Rapid transport
- Aggressive tocolytics if contracting
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What sign may be present in a patient presenting with uterine rupture?
Kehr's sign - referred shoulder pain
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What position should a pregnant patient be placed in to avoid supine hypotensive syndrome?
Left lateral recumbent >24 weeks gestation
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What is Coopernail's sign and what does it indicate?
- Bruising to the genitalia
- Indicates pelvic fracture
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What is McDonald's rule?
- Estimates weeks gestation by fundal height
- 20-24 weeks the height of the fundus should be at the umbilicus
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What are some changes that take place in the pregnant female?
- Tidal volume increases by 20%
- Blood volume increases by 30-50%
- Delayed gastric emptying
- Slight respiratory alkalosis
- Hormones soften joints
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What does LOCK stand for in treating OBGYN patients?
- Left lateral recumbent position
- Oxygen
- Correct or improve contributing factors
- Keep reassessing FHR and intervene when indicated
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What are the drugs of choice when treating hypertension in pregnant patients?
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What is Leopold's manuever for?
- Determining placement of fetal monitoring transducers
- Find the top of the fundus, the spine of the fetus, and the presenting fetal part
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Where should the Tocotransducer be placed?
Approximately 2 cm from the top of the fundus
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Where should the Ultrasound transducer be placed?
- Over the fetal back
- It will be below the umbilicus for a term fetus, who is head down
- Or above the umbilicus for a fetus who is breech
- THIS ONE GETS GEL
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What do the lines on the fetal heart rate paper indicate?
- Thick red lines are at one minute intervals
- Each small horizontal square represents 10 seconds
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What is nadir?
Nadir is defined as the lowest point of the deceleration
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What criteria indicates a Category 1 Normal FHR tracing?
- Baseline rate 110-160
- Baseline variability moderate
- Late or variable decels are absent
- Early decels can be present or absent
- Accelerations can be present or absent
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What is DR. C BRAVADO and what is it used for?
- OBGYN patients in the first 20 mins of contact
- DR - determine risks
- C - contractions
- BR - baseline rate
- A - accelerations
- VA - variability
- D - decelerations
- O- overall impression and treatment plan
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What is the best indicator of fetal viability?
FHR Variability
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What criteria indicates a Category 3 Abnormal FHR tracing?
- Absent baseline FHR variability AND any of the following
- Bradycardia
- Recurrent variable decels
- Recurrent late decels
- OR Sinusoidal pattern (wave-like pattern with cycle frequency of 3-5/min persisting for >20 minutes)
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What are some common causes of fetal tachycardia?
- Maternal fever - most common
- Methamphetamine use
- Sympathomimetic use
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What are the four classifications of fetal heart rate variability?
- Absent - Undectable
- Minimal - Undetectable or less than or equal to 5 beats per minute
- Moderate - 6 to 25 beats per minute
- Marked - More than 25 beats per minute (AKA Saltatory pattern)
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What should you consider if you are seeing minimal FHR variability?
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What should you consider if you are seeing marked FHR variability?
- Hypoxia
- Mechanical cord compression
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What is a variable decleration and what does it indicate?
- V or W shaped decelerations that can occur any time during a contraction
- Indicate cord compression i.e. prolapsed cord
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What is a late deceleration and what does it indicate?
- Deceleration that begins at the top of the contraction
- Indicates uteroplacental insufficiency (i.e. pre-eclampsia, diabetes, and cardiovascular disease)
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What are some causes of sinusoidal pattern?
- Fetal anemia
- Hypoxia
- Severe acidosis
- Associated with a high rate of fetal death
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What is a pseudosinusoidal pattern?
- Wave-like pattern with less regularity
- Generally benign and transient
- Can occur in presence of narcotics
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What criteria indicates a Category 2 Indeterminate FHR tracing?
- All tracings not categorized as Cat 1 or Cat 3
- Require surveillance and re-evaluation
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What is the goal DBP in PIH and Pre-Eclampsia?
90-110 mmHg
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What medication should not be administered to insulin-dependent diabetic mothers?
Terbutaline - transient hyperglycemic response
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What is HELLP syndrome?
- Hemolysis
- ELevated liver enzymes
- Low Platelet ccount
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What are three factors that assist in confirming SROM?
- Positive pooling in vaginal vault with speculum exam
- Nitrazine paper
- Positive ferning
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What is macrosomia?
Large baby for gestational age
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What is Chadwick's sign?
- Darkening of cervix, vagina, and vulva
- Indicates pregnancy
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What defines PPH post partum hemorrhage?
- Decrease in/absent uterine tone
- Vaginal bleeding >500 cc/24 hrs
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What is the treatment of PPH?
- Shock treatment and rapid transport
- Infusion of oxytocics (only after placenta delivered)
- Bimanual compression of uterus maintained for 2-5 mins
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What are some causes of uterine inversion?
- Inappropriate fundal pressure
- Excessive traction on umbilical cord
- Mass in the vagina
- Uterine atony
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What is the treatment for uterine inversion?
- Treat for shock and rapid transport
- Manual replacement of the uterus
- Oxytocics should follow replacement of uterus
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What is the formula for ETT depth in neonates?
6 + weight in kg = cm at the gums
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What is the most common cause of neonatal seizure?
Hypoglycemia
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A PDA dependent patient may require the administration of which drug during transport?
- Prostaglandin
- Primary complication is apnea
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What can cause closure of a PDA?
- High concentrations of oxygen
- Indomethacin (Indacin)
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What four defects make up the Tetralogy of Fallot?
- Pulmonary stenosis
- Right ventricular hypertrophy
- Over-riding aorta
- Ventricular septal defect
- Surgical repair is called Rastelli
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What is a TET spell?
- VSD resulting in bluish skin during episodes of crying or feeding
- Peak incidence between 2 to 4 months of life
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What is a scaphoid abdomen indicative of in a neonate?
- Diaphragmatic hernia
- Requires oral gastric tube and oral intubation
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What is an omphalocele?
Malformation in which abdominal contents protrude into the base of the umbilical cord
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What is a gastroschisis?
- Opening in the abdominal wall that allows stomach and intestines to extend outside of the body
- Does not involve the umbilical cord
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What are the risks of an omphalocele or gastroschisis?
- Infection and hypothermia
- Cover the contents and administer antibiotics
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What is Potter's syndrome?
- Renal agenesis (absence of the kidney(s))
- Deformed lower extremities
- Oligohydramnios
- Pulmonary hypoplasia caused by enlarged bladder
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The pediatric patient may be pre-treated with which medication prior to administering Anectine?
- Atropine
- All children under 12 years due to increased vagal response to laryngoscopy
- Given ideally 2-3 mins prior to paralytic
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What is the formula to estimate ET tube size in peds?
16 + age in years / 4
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What is the formula to estimate ET tube depth in peds?
ETT size x 3
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What is the age of pediatric patient on which a needle cric may be performed?
11
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What is the age of pediatric patient on which a nasal intubation may be performed?
12
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What mechanical ventilation adjustments may be needed in a patient presenting with status asthmaticus?
- Large tidal volumes may be required
- Longer expiratory tims required
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What is the drug of choice in pediatric asthma sedation?
- Ketamine
- Has bronchodilatory properties
- Decreases the incidences of mucus plugging in pediatric patints with asthma
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How do we manage status asthmaticus?
- Humidified oxygen
- IV rehydration
- Continuous nebulized beta-2 agents
- Atrovent, corticosteroids, Terbutaline, intubation
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What is steeple sign?
- Narrowing of the airway seen on an A/P chest radiograph
- Laryngotracheobronchitis (croup)
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What is thumb print sign?
- Thumb print seen on lateral neck radiograph
- Epiglottitis
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What is Waddell's sign?
- Injury pattern seen in pediatric pedestrian vs MVC
- Head, abdomen, lower extremities
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What are the most commonly injured internal organs in pediatric trauma?
Spleen and liver
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What does LEMONS stand for?
- Look externally
- Evaluate 3:3:2 rule
- Mallampati
- Obstructions/Obesity
- Neck mobility
- Saturation
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What is the 3:3:2 rule?
- 3 finger mouth opening
- 3 finger chin to hyoid bone
- 2 finger floor of mouth to thyroid cartilage
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What does BOOTS stand for?
- Beards, beware of full stomach
- Obesity/obstructions
- Older patients
- Toothless
- Snores/stiff lungs
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What does CHANGES stand for?
- Change blade, smaller tube
- Help of another provider
- Alternative airway
- Neck alignment/release of C-collar
- Gum-elastic bougie
- External laryngeal manipulation
- Suction
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What is the LOAD mnemonic used for and what does it stand for?
- RSI prepatory steps
- Lidocaine
- Opiates
- Atropine for peds
- Defasiculating dose prior to Sux administration
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What are the 7 P's of RSI?
- Pre-oxygenation
- Preparation
- Position
- Protection and induction
- Paralysis
- Placement
- Proof
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What are the primary and secondary causes of bradycardia?
- Primary is hypoxia
- Secondary is ICP
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What is Hamman's sign?
- Crunching sound heard with chest auscultation, synchronized with heartbeat
- Indicates tracheobronchial injury
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What are the sxs of tracheobronchial injury?
- Hamman's sign
- Persistent hypoxia despite needle decompression
- Increasing SQ air/crepitus
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What is the treatment of tracheobronchial injury?
Intentional right mainstem intubation below level of injury
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What are the most commonly injured areas of the heart in myocardial contusion?
Right ventricle and right atrium
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What are predictable injuries in a rear-end collision?
- C2 fx Hangman's fx
- T12-L1 injuries
- Femur fx
- Tib/fib fx
- Ankle fx
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What are predictable injuries in a motorcycle side impact or lay-it-down collision?
- Open femur fx
- Pelvic fx
- Trapped arms break ribs
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What is a Colles' fracture?
- Distal radius fx with posterior displacement of the wrist and hand
- Common in falls
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Which is the most common type of hip dislocation?
- Posterior
- Extremity flexed and adducted
- Internal rotation
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What is the primary treatment of any fracture?
Immobilize above and below the injury
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What is the formula for CPP?
CPP = MAP - ICP
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What is the formula for MAP?
MAP = DBP + 1/3 PP
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What is cavitation?
Formation of air bubbles in a liquid at low pressure when the liquid is accelerated
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What does TOES stand for and what does it mean?
- Temporal
- Occipital
- Ethmoid
- Sphenoid
- Possible bones associated with basilar skull fractures
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What is Brudzinski's sign?
- Nuchal rigidity causes a patient's hips and knees to flex when neck is flexed
- Can indicate meningitis or subarachnoid hemorrhage
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What is Kernig's sign?
- Inability to straighten the leg when hip is flexed to 90 degrees
- Indicates meningitis
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What is the most severe type of LeFort fracture?
- Transverse or cranioacial dissociation
- Involves the zygomatic arch
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What are the sxs of subarachnoid hemorrhage?
- Severe HA
- vomiting
- Nuchal rigidity
- Brudzinski's sign
- Confusion/ALOC
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What artery does an epidural bleed typically involve?
Middle meningeal
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What are some target lab values to maintain an ICP patient at?
- pCO2 at 35-45, no less than 30
- Sodium at 155
- Serum Os <320 mOsm/kg
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What is the doll's eyes reflex?
- Eyes move with head turning
- Also known as oculocephalic reflex
- Negative is BAD - eyes remain in mid-position
- Can indicate brainstem dysfunction
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What is Babinski reflex?
- Initial inflection of great toe in response to stroking of sole
- Abnormal response is extensor plantar response
- Can indicate upper motor neuron lesion if abnormal
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What is consensual response?
- Normal pupil will constrict in direct and indirect light
- No response to either indicate a brain problem
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What is autonomic dysreflexia?
- Massive imbalanced reflex sympathetic discharge which can be caused by fecal impaction or bladder distention
- Occurs in patients with spinal cord injuries above T6
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What cardiac rhythm is common in AC electrical injuries?
VFib
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What cardiac rhythm is common in DC electrical injuries?
Asystole (D for Dead)
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What are the three drugs contained in the cyanide antidote kit?
- Amyl nitrite
- Sodium nitrite
- Sodium thiosulfate
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What drug administered for hypertensive emergencies can result in cyanide toxicity?
Nipride in absence of sufficient thiosulfate
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What is the antidote for hydroflouric acid burns?
Calcium gluconate
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What is the hallmark indicator that rhabdomyolysis is occurring in a patient?
Elevated CK/CPK >20,000
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What is Boyle's law?
- Expansion and contraction of gases at a constant temperature due to pressure changes
- Ascent - Expansion
- Descent - Contraction
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What is Gay Lussac's law?
- Temperature increases, pressure increases
- Temperature decreases, pressure decreases
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What is Henry's law?
- Gas in liquid
- The mass of a gas which dissolves in a volume of liquid is proportional to the pressure of the gas
- AGE (arterial gas embolism)
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What is Charles' law?
- Volume of gas is directly proportional to temperature of gas
- Gas volume expands as temp increases
- Gas volume contracts as temp decreases
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What is Dalton's law?
- Decreased amounts of oxygen with increased altitude
- The total prssure of gas mixture is the sum of the partial pressures in the mixture
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What temperature change should you expect while flying?
Every 1,000 feet of altitude gained = 1-2 degree decrease in temperature
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What is Graham's law?
- Gas diffusion from higher to lower area of concentration
- Gas exchange at the cellular level
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One ATM (atmosphere) of water pressure equals how many feet of depth?
33 feet
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What is the number one cause of aeromedical crashes?
Pushing the weather
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What are the weather minimums for local day flights for rotor-wing?
500 ceiling feet and 1 mile visibility
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What are the weather minimums for local night flights for rotor-wing?
800 ceiling feet and 2 miles visibility
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What are the weather minimums for cross-country day flights for rotor-wing?
1000 ceiling feet and 1 mile visibility
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What are the weather minimums for cross-country night flights for rotor-wing?
1000 ceiling feet and 3 miles visibility
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What is TUC?
- Time of useful consciousness
- 15 seconds or less at 40,000 feet or above in an oxygen deprived environment
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What is sterile cockpit?
Only discussion pertinent to flight operations in all phases of flight, except cruise level
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If you have experienced a crash landing, what do you do first?
- Remember TFB
- Throttle, fuel, battery
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Where should you meet in event of a crash landing?
- Nose of the aircraft
- aka 1200 position
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What is your survival priority order in case of a crash?
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What organs are the first to be affected in an oxygen deprived atmosphere?
Eyes
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What are the cones of the eyes responsible for?
Bright vision
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What are the rods of the eyes responsible for?
- Dimly lit areas
- Do not detect color or detail
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How long does it take to achieve complete dark adaptation?
30 minutes
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What color light retains dark adaptation?
Red
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What is the time limit between communications with ground while in flight?
15 mins (45 on ground)
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When should the PAIP be implemented?
15 mins after an aircraft fails to give a position report or is overdue to arrive
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What is hypoxic hypoxia?
Altitude hypoxia, decrease in alveolar oxygen
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What is hypemic hypoxia?
Decreased oxygen carrying capacity in the blood, anemia
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What is histotoxic hypoxia?
Inability of cells to take up or utilize oxygen, poisoning
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What is stagnant hypoxia?
Decreased cardiac output results in blood pooling, CHF
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What are some stressors of flight?
- Decreased partial pressures of oxygen
- Decrease in barometric pressure
- Decrease humidity
- Thermal changes
- Noise
- Vibration
- Fatigue
- G-Forces
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The type of radio band most frequently used for air to ground communication is?
- UHF
- Limited range, fluctuates with terrain
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A repeater system is which type of radio system?
Half duplex
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What is simplex?
One frequency for transmission and reception - one at a time
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What is duplex?
TWo frequencies used to transmit and receive simultaneously
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What is multiplex?
Combines signals to transmit simultaneously on one frequency
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Which radio signal follows the curvature of the earth and has the greatest range?
VHF low-band FM
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Which radio signal follows a straight line?
VHF high-band FM
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Which radio signal is typically used for aviation-related communication?
VHF AM
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