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10 free AEMT practice questions: Bleeding Control and Hypovolemic Shock

These are real questions from the same bank the app draws from. Each one is written to the NREMT AEMT content specifications and kept inside the AEMT scope of practice. Pick an answer and you get the full rationale, including why the other three options are wrong.

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Question 1 of 10

A 45-year-old patient caught an arm in a hay baler. The forearm is mangled and is bleeding heavily despite four minutes of direct pressure, and the fingers are still warm with a palpable radial pulse. A windlass tourniquet has been placed high on the upper arm. The vital signs are BP 106/78, P 130, R 26, and SpO₂ 96% on room air. How far should the windlass be tightened?

Show the answer and rationale

Correct answer · Until the bleeding stops and the radial pulse is gone

Tighten the windlass until the bleeding stops and the radial pulse is gone. This arm is still bleeding heavily after four minutes of direct pressure. The pulse is 130. The warm fingers and the radial pulse mean the arm still has circulation. A surgeon may be able to save the arm. A patient bleeding faster than pressure can control will die from the blood loss long before the arm becomes the problem. A tourniquet is tight enough when the bleeding stops and the pulse below the tourniquet is gone. Anything less leaves arterial blood flowing in. The cost is injury to the nerves and muscles below the tourniquet from the lack of blood flow. Current guidance accepts that cost on purpose. The older thinking about saving the limb cost patients their lives.

Why the others are wrong

Until the bleeding stops while the radial pulse is preserved: Keeping a pulse in a hand you want to save sounds careful. A tourniquet that stops blood from leaving through the veins while arterial blood still comes in makes the bleeding worse, not better.

Until the bleeding slows to an ooze and the fingers stay warm: An ooze looks like the bleeding is under control, and warm fingers seem to say the arm is fine. Oozing under a locked windlass means the tourniquet is not tight enough. A tourniquet that is only half tight increases blood loss.

Until the patient reports that the pressure has become painful: A tourniquet that is on right does hurt, and the pain grows the longer it stays on. Pain starts well before the artery is closed off. Tightening until the patient says it hurts leaves the tourniquet too loose. The endpoint is the bleeding and the pulse, not the pain.

Question 2 of 10

A tourniquet was placed on the thigh of a 46-year-old patient for arterial bleeding from a deep laceration caused by a falling pane of glass. The windlass is locked and the wound is no longer soaking dressings quickly, but a steady ooze of dark blood continues from the wound edge. The vital signs are BP 102/74, P 126, R 24, and SpO₂ 96% on room air. What does the continued ooze indicate?

Show the answer and rationale

Correct answer · The tourniquet is not tight enough and should be tightened further

This tourniquet is not tight enough. The windlass is locked, but a steady ooze of dark blood keeps coming from the wound edge. Arteries have thick walls and high pressure. Veins have thin walls and low pressure. A band that is only partly tight squeezes the veins shut first, while arterial blood keeps coming in. Blood flows into the limb and cannot flow back out. The wound can bleed more than it did with no tourniquet at all. Turn the windlass more until the bleeding stops and the distal pulse is gone. The dark color fits, because the blood pooling in the limb is venous.

Why the others are wrong

The device has failed and should be exchanged for a pressure dressing: Swapping out a device that is not working is good troubleshooting in most situations. This tourniquet has not failed. The band is set too loose, and that is the one setting that makes bleeding worse. Taking the tourniquet off for a pressure dressing gives up control of the artery completely.

Venous bleeding that a tourniquet is not designed to control: The dark color does point to venous blood. A tourniquet that is tight enough stops venous and arterial flow both. Venous blood is leaving because arterial blood is still getting in under a band that is only partly tight.

Normal residual drainage from the vessels inside the tourniquet: Some ooze from inside a limb with a tourniquet sounds believable, and it gives you a reason to stop adjusting. Steady bleeding is never the normal endpoint. Calling this ooze normal leaves the patient losing blood under a device that is supposed to have stopped it.

Question 3 of 10

A tourniquet has controlled arterial bleeding from a lower leg wound on an 85-year-old patient who fell onto a snapped metal garden stake. The bleeding has stopped and the crew is preparing to move the patient to the ambulance. The vital signs are BP 116/84, P 104, R 20, and SpO₂ 97% on room air. What should be done with the tourniquet before transport?

Show the answer and rationale

Correct answer · Write the time of application on it and leave it uncovered

The tourniquet has stopped this arterial bleed, and the time and the device both have to stay visible. Both steps are for the team that takes the patient from you. The time of application goes on the device itself, on tape, or on the skin. The receiving team decides whether to convert the tourniquet based on that time. The patient care report arrives separately from the patient, and a time written only there can go missing. The tourniquet also stays where people can see it. A tourniquet hidden under a blanket or a sheet is one nobody sees on arrival. The receiving team may then think the tourniquet went on later than it did. Once a tourniquet is on, do not loosen it, release it now and then, or peek under it.

Why the others are wrong

Cover it with a blanket so the patient does not look at it: Covering an unpleasant injury is kind, and patients do ask for it. A tourniquet the receiving team cannot see is exactly what the guidance rules out. The device and its time decide what happens next with the limb.

Loosen it slightly now that the bleeding has stopped: Bleeding that has stopped seems like a reason to ease the damage the tourniquet is doing. Loosening the tourniquet lets arterial blood back into a vessel that has not been repaired. Once a tourniquet goes on in the field, it is not loosened or released now and then.

Note the time on the patient care report and cover the limb: Writing the time down is right, and the patient care report is where most times go. This time belongs on the tourniquet itself so it arrives with the limb. Covering the limb hides the one thing the hospital has to see.

Question 4 of 10

A 70-year-old patient has a deep stab wound to the upper abdomen that is bleeding briskly, and direct pressure over the wound has not slowed it. The vital signs are BP 98/72, P 122, R 24, and SpO₂ 97% on room air. How should this wound be managed?

Show the answer and rationale

Correct answer · Cover it, keep pressure on the surface, and transport rapidly

This patient has a deep stab wound to the abdomen, and an abdominal wound cannot be packed. The wound is bleeding briskly, direct pressure has not slowed it, and the pulse is 122. Packing works for junctional wounds and deep wounds you can reach into, and packing stops at the body wall. The abdomen has no floor for the gauze to press a vessel against. Blood just runs off into a space that can hold liters. Cover the wound and keep what surface pressure you can. Treat for shock, keep the patient warm, and transport rapidly. The bleeding has to be stopped in an operating room. Start IV access and warmed crystalloid en route, not on scene.

Why the others are wrong

Pack the tract with hemostatic gauze and hold pressure over it: Hemostatic gauze is the right tool for a bleed that pressure cannot control, and stepping up your bleeding control is the right idea. The abdomen is a cavity, not a wound tract. Gauze fed into the abdomen cannot reach or squeeze the source. Packing also delays transport, and transport is the only thing that helps this patient.

Wrap a pressure dressing circumferentially around the abdomen: A circumferential wrap is how you hold a pressure dressing on an arm or a leg. A wrap looks like a way to put pressure on the trunk too. The belly is soft and holds a large volume. A wrap squeezes bowel instead of a vessel and does not control the bleeding.

Probe the wound with a gloved finger to find the bleeding vessel: Finding the bleeding vessel is how a surgeon fixes this problem. Probing a penetrating abdominal wound with a finger disturbs the clot and can make the injury worse. Probing this wound is outside what any field provider does.

Question 5 of 10

A 73-year-old patient fell from a ladder onto a garden trellis and has a wooden stake impaled in the outer thigh with dark blood welling steadily around it. The vital signs are BP 122/80, P 108, R 20, and SpO₂ 97% on room air. How should the impaled object be managed?

Show the answer and rationale

Correct answer · Stabilized in place, with pressure applied around the wound

This is an impaled object in the thigh, and the stake stays in place. Dark blood is welling steadily around the stake. The stake itself is plugging the vessel it tore. The blood you see is only what leaks past that plug. Pulling the stake out turns a partly controlled venous bleed into an open channel deep in the thigh. You would have no way to reach the source. Stabilize the stake in place with bulky dressings. Apply pressure around the entry site, not on the stake itself. Transport so the stake can be removed where the vessel can be controlled directly.

Why the others are wrong

Removed, with the tract packed with hemostatic gauze: Packing a tract with hemostatic gauze is standard for junctional bleeding you can reach directly. Here the stake would have to come out first. Pulling the stake releases the pressure it is putting on the torn vessel. The steady dark bleeding turns uncontrolled before you can pack anything. Controlling that vessel belongs in the operating room.

Removed only if it interferes with moving the patient: Some protocols allow removing an impaled object when it blocks the airway or gets in the way of moving the patient. Nothing here suggests the stake gets in the way of transport. A thigh impalement does not threaten the airway or chest compressions.

Shortened at the skin, with the cut end covered by a dressing: Cutting a long impaled object short at the skin is a rescue technique for when its length blocks extrication. Nothing here shows the stake is too long to transport. Cutting the stake also sends vibration into the wound.

Question 6 of 10

A pressure dressing was wrapped circumferentially around the forearm of a 13-year-old patient after a laceration from a broken aquarium. Ten minutes later the fingers are cool and pale and the patient reports new tingling in them. The vital signs are BP 108/68, P 96, R 18, and SpO₂ 99% on room air. What should the AEMT do?

Show the answer and rationale

Correct answer · Loosen the bandage and reassess the fingers

The pressure dressing is too tight. Ten minutes after the dressing went on, the fingers are cool and pale and the patient has new tingling in them. A pressure dressing is meant to press on the wound while blood keeps flowing past it to the hand. After you put one on, you check the pulse, feeling, and skin color below the bandage. Cool, pale fingers or new tingling below the bandage mean the bandage is cutting off circulation. Loosen the bandage and recheck the fingers. You tighten a tourniquet on purpose until blood flow stops, and you never loosen a tourniquet. The never loosen rule belongs to tourniquets, not to bandages.

Why the others are wrong

Leave it alone, since loosening it restarts the bleeding: Not disturbing a dressing is a real rule. The rule protects a clot you cannot see from being torn away. That rule is about bleeding, and this problem is circulation. The cool, pale fingers and new tingling are telling you the blood is not getting through.

Tighten it further until the fingers stop tingling: Tightening the bandage would make sense only if the tingling came from bleeding under it. More pressure makes the lack of blood flow worse, and that lack of blood flow is causing the tingling. A tighter bandage starts acting like a tourniquet by accident.

Replace it with a tourniquet above the elbow: A tourniquet is for bleeding that is not controlled. The bleeding here is already controlled. A tourniquet would cut off blood to an arm whose only problem is a bandage that needs loosening.

Question 7 of 10

A 10-year-old patient weighing about 30 kilograms has a deep scalp and forehead laceration from a fall through a glass tabletop, and roughly 600 mL of blood is on the floor. The bleeding is now controlled with direct pressure. The vital signs are BP 104/76, P 132, R 26, and SpO₂ 98% on room air. Why does that volume matter more in this patient than in an adult who lost the same amount?

Show the answer and rationale

Correct answer · It is a much larger share of this child's total blood volume

The 600 mL is a much bigger share of this child's blood. A child has about 80 mL of blood per kilogram. This child weighs about 30 kilograms, so the child has about 2400 mL of blood in total. Losing 600 mL is a quarter of that. An adult has about five liters of blood, so the same 600 mL is closer to a tenth. Children compensate hard and for a long time. That's why this child still has a systolic pressure of 104 while the pulse is 132. The fast pulse is the finding to act on. A child's blood pressure stays normal until the child can no longer compensate, and then the pressure drops suddenly.

Why the others are wrong

A child bleeds faster than an adult from the same size wound: Children do bleed fast from scalp wounds, so this sounds close to true. Speed is not what makes this loss dangerous. The same amount of blood is a much bigger part of a smaller body.

A child's clotting system responds more slowly to an injury: Slower clotting would explain a bigger blood loss. A healthy child's clotting works fine. The difference is how much blood the child has, not how well the child stops bleeding.

Scalp wounds bleed more heavily in children than in adults: Scalp wounds do bleed a lot for their size at any age. That explains why 600 mL ended up on the floor. The size of the wound does not explain why 600 mL matters more in a child than in an adult.

Question 8 of 10

A 16-year-old patient has a tourniquet in place for a thigh wound from a snapped steel cable, and the bleeding has stopped. The patient is quiet and answers questions slowly. The vital signs are BP 84/62, P 136, R 28, and SpO₂ 95% on room air. What does the systolic reading mean for a patient of this age?

Show the answer and rationale

Correct answer · It is below the threshold for this age and calls for rapid transport

This patient is in hypovolemic shock, and the systolic of 84 is low for the age. Pediatric low blood pressure cutoffs go by age. Over age ten, a systolic below 90 is low. This patient is 16 with a systolic of 84, so the pressure is already below the line. In a child, the blood pressure drops late, because children compensate hard before the pressure falls. The pulse is 136. The quiet, slow answers are a change in mental status, not just the patient's personality. This patient lost a large amount of blood from the thigh wound. The tourniquet stopped the bleeding, but the lost blood is still gone. Transport rapidly, give warmed fluid, and notify the hospital early.

Why the others are wrong

It is acceptable in a teenager whose bleeding has been controlled: Once a bleed is controlled, the emergency can seem over, and teenagers handle a lot before they look sick. Stopping the bleeding does not replace the blood that is already gone. A systolic of 84 is below the cutoff for anyone over age ten, tourniquet or not.

It is expected after a tourniquet and will rise without treatment: Some patients do improve once a bleed is controlled. A pressure this low comes from lost volume, and only fluid replacement and a hospital fix the lost volume. Waiting for the number to come up wastes time this patient does not have.

It is above the 70 mm Hg pediatric floor, so it does not count as low: There is no single pediatric floor. The cutoff rises with age. Under one year, the cutoff is 70. From one to ten years, the cutoff is 70 plus twice the age in years. Over ten, the cutoff is the adult number, 90. A 16-year-old is in that last group, so 84 is low.

Question 9 of 10

A 77-year-old patient has a deep groin wound from a falling sheet of roofing metal, and packing has slowed but not stopped the bleeding. There is no head injury. An intravenous line is running warmed isotonic crystalloid. The vital signs are BP 86/64, P 124, R 24, and SpO₂ 96% on room air. What endpoint should the fluid be titrated to?

Show the answer and rationale

Correct answer · A radial pulse you can feel and a patient who still answers you

This patient is in hemorrhagic shock, and the bleeding is still not stopped. The packing slowed the groin bleeding but did not stop it, and the pressure is 86/64. With an open bleed, you give fluid to keep the patient perfusing, not to hit a normal number on the cuff. A radial pulse you can feel tells you blood is still getting to the brain and kidneys. A patient who still answers you tells you the brain is getting enough. Titrate the fluid to those two and stop there. Crystalloid is not blood. Pushing the pressure toward normal against an open vessel can knock loose the weak clot. The extra fluid also thins out the platelets and clotting factors that are left, and it cools the patient down. Getting to the hospital with a systolic in the low 90s is the goal here, not a failure.

Why the others are wrong

A saturation that comes back above 94 percent: Saturation tells you how much oxygen the blood is carrying. Saturation does not tell you how much blood is left or where it is going. A patient who has lost a third of their blood can still read 96 percent.

Two liters of crystalloid given, whatever the numbers do: Giving a set amount of fluid is not an endpoint. Fluid here gets titrated to what the patient shows you. A fixed number of bags either stops short or pushes the pressure high enough to break the clot open again.

A capillary refill time of less than two seconds: Capillary refill is a real sign of perfusion, and you should recheck it. Capillary refill changes slowly and is not reliable in a cold patient. The endpoint the guidelines use is a radial pulse together with mental status.

Question 10 of 10

A 91-year-old patient has a packed and bandaged forearm wound after catching an arm in a garage door spring, and is being transported with an intravenous line running. The compartment is cool, the patient's clothing is wet from the rain, and the skin feels cold to the touch. The vital signs are BP 94/70, P 118, R 22, and SpO₂ 96% on room air. Why does warming this patient matter?

Show the answer and rationale

Correct answer · Cold blood clots poorly, so cooling worsens the bleeding

Hypothermia in a bleeding patient makes the bleeding worse. Clotting runs on enzymes, and those enzymes slow down as the body cools. A cold patient clots poorly and keeps bleeding. The bleeding causes acidosis, and acidosis makes clotting even worse. That loop is called the lethal triad: hypothermia, acidosis, and coagulopathy, which means poor clotting. Each one feeds the other two. This patient is losing heat three ways: wet clothing, a cool compartment, and cool fluid running into the vein. Take off the wet clothing and put blankets on. Warm the compartment, and warm the IV fluid whenever you can. All of that is treatment for the bleeding, not just comfort.

Why the others are wrong

A warm patient reports less pain during a long transport: Warming does make a cold, wet patient more comfortable. If you treat warming as comfort only, warming ends up at the bottom of your priority list. Warming belongs right next to the dressing as bleeding control.

Warming raises the blood pressure toward a normal range: Warming a cold patient can improve perfusion. Raising the blood pressure is not what warming is for. In a bleed that is not controlled, the pressure target is kept low on purpose anyway.

Cold skin makes the pulse oximeter read falsely low: Cold fingers can make a pulse oximeter reading less accurate. A bad reading is a problem with the monitor, not the reason warming is treatment. The danger from hypothermia here is worse clotting, and the saturation number has nothing to do with that.

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