Chapter 46: Upper Gastrointestinal Problems

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Okay, let's unpack this.

Welcome back to the Deep Dive.

Today we're taking a deep dive into Chapter 46 from Lewis's Medical Surgical Nursing.

You know the one, Assessment and Management of Clinical Problems, our mission, to give you the absolute essential nuggets on upper gastrointestinal problems, the kind of high -yield knowledge that helps you ace your courses and truly excel in clinical practice.

Think of this as your shortcut to understanding not just what happens with these common GI conditions, but why it matters for your patients.

We'll zero in on the pathophysiology, critical risk factors, key clinical manifestations, those vital diagnostic tests, and most importantly, the nursing process that brings it all together.

Our goal is really to connect the dots so you can approach patient care with, well, confidence.

Right.

We're cutting through the textbook density to give you those aha moments and practical insights you'll actually use.

Let's get started.

All right, let's kick off with something every nurse will encounter,

nausea and vomiting.

It's often dismissed as just a stomach bug, but for us, it's a critical distress signal from the, well, the entire body.

What's maybe the most surprising thing about how it's triggered?

That's a fantastic point because while we often think of the GI tract, the real insight is that your brain's vomiting center, you know, in the medulla, it's taking orders from everywhere.

Not just your gut, but things like a heart attack, brain tumors, even strong emotions can trigger it.

It's wild.

And there's a specialized alarm bell in your brain stem, the chemoreceptor trigger zone or CTZ.

The CTZ, right.

And that's particularly sensitive to chemicals from drugs, toxins, or even like the inner ear's motion signals.

So that persistent nausea might actually be a reaction to a new medication, not just something you ate.

Huh.

So it's like a central command center getting input from all over, making it super complex.

But for a nurse, when should we really start worrying beyond just discomfort?

What are the absolute critical red flags?

Okay.

Crucially for nurses, focus on two big things.

Rapid dehydration and metabolic alkalosis from losing all that stomach acid.

Yeah.

Both can become life -threatening really quickly.

And always, always look at the color of the emesis.

That's key.

The color.

Okay.

Tell me more.

Bright red blood means active bleeding.

That's a real emergency.

Like a Mallory Weiss tear or varuses.

Coffee grounds appearance suggests older blood that's interacted with stomach acid, still indicates gastric bleeding, just maybe not as acute.

And if a patient is projectile vomiting without nausea, that immediately points to a central nervous system issue.

Like a tumor needs urgent investigation.

That color crew is vital.

And when we're managing it, what are, say, the top one or two drug classes that are truly workhorses for nurses?

And maybe what's a critical alert we absolutely can't miss.

Good question.

For drug therapy, you'll definitely see on Dancitron, that's a 5 -HT3 receptor antagonist used frequently, especially for chemo -induced nausea or post -op nausea and vomiting.

Yeah.

That's very effective Zofran, right?

Right.

Zofran.

And a major alert, really important, metoclopramide or raglan.

Well, it helps with gastric emptying, chronic or high doses risk, tardive dyskinesia, you know, those involuntary movements.

And they can be permanent.

Oh, wow.

Permanent.

Yeah.

So always weigh the benefits and risks carefully.

And, I mean, never use antibiotics just to mask an undiagnosed potentially serious problem.

Get the diagnosis first.

That's a crucial nursing point.

Okay.

So after we've got the immediate situation maybe under control, how do we guide patients back to eating?

What's the approach?

You start cautiously.

Very cautiously.

Clear liquids, first sips of room temperature water, maybe 5 to 15 millimellas every 15 to 20 minutes.

Gradually increase.

Yeah.

Avoid super hot or super cold drinks or, you know, those really salty broths or sports drinks initially.

Then slowly introduce bland, high -carb, low -fat foods like dry toast, crackers, maybe some plain gelatin, baked potatoes, rice.

Got it.

Bland and easy.

The key is small, frequent meals, eating slowly.

And here's a tip.

Drinking liquids between meals, not with them.

And always remind patients to avoid just grabbing OTC antibiotics before they have a diagnosis because like we said, they can mask serious underlying issues.

Okay.

Moving on from that generalized distress, let's zoom in on the gateway.

The oral cavity, often overlooked until something hurts, right?

But it can signal systemic problems or even harbor serious stuff like oral cancer.

We often think oral problems, gum disease, but it's so much more interconnected, isn't it?

That's where the real insight lies, absolutely.

The oral cavity isn't just a local concern, it's a potential reservoir for respiratory pathogens.

And we're seeing more links.

All pathogens are associated with things like diabetes and heart disease, it's systemic.

So good oral hygiene truly impacts overall health, not just your teeth and gums.

We see various oral inflammations, you know, painful canker sores, those shallow white ulcers or gingivitis, the inflamed bleeding gums.

But for a nurse, recognizing oral candidiasis or thrush is critical.

Thrush?

Okay.

What does that look like?

It presents as these pearly, bluish -white milk curd lesions.

You often see it in debilitated or immunosuppressed patients, maybe after prolonged antibiotics or corticosteroids.

And it requires antifungal treatment, like nystatin swish and swallow.

That connection to systemic health is a huge takeaway.

Now, shifting to a more serious concern, oral cancer.

What's maybe one unexpected fact about this that nurses might often miss?

This is really important.

What if the patient reports no pain?

Remember, about 30 % of oral cancer patients present initially with an asymptomatic neck mass.

Just a lump they found.

30%, wow.

Yeah.

So that underscores the importance of a thorough head -to -neck assessment in everyone.

Early detection dramatically improves prognosis.

Oral cancer is most common on the lower lip and the lateral border of the tongue, often in men over 35.

And sadly, there's a disparity.

Incidents in mortality are highest in black men.

Needs targeted education.

An asymptomatic neck mass that's definitely a critical nursing pearl.

What are the main culprits behind oral cancer, then?

Well, the primary risks are pre -stark, tobacco use, any form, smoking, chew, snuff, and frequent heavy alcohol consumption.

That accounts for like 75, 90 % of cases.

Beyond those, prolonged sun exposure for lip cancer, poor oral hygiene, chronic irritation like from a jagged tooth.

And human pepulomavirus, HPV, is a significant contributor now to maybe 25 % of cases, often linked to multiple oral sex partners.

So as nurses, health promotion is key here.

Absolutely vital.

Educating patients on avoiding tobacco, limiting alcohol, using sun protection for lips, and the importance of the HPV vaccination is paramount.

And what should we specifically teach patients to look for at home for early detection signs?

Okay, key things.

Any unexplained oral pain, any sore that just doesn't heal in two, three weeks, unusual bleeding, difficulty swallowing, dysphagia, or any swelling or lump in the neck, those all warrant immediate medical evaluation.

You might also encounter pre -cancerous lesions during an assessment.

Leucoplakia, that white smoker's patch, kind of leathery, about 15 % turn cancerous.

And then there's erythroplakia, red velvety patch.

That one's more concerning.

Over 50 % progress to squamous cell cancer, so vigilance is key.

Definitely.

Okay, let's shift gears.

Here's where it gets really interesting for a lot of people.

Let's tackle two incredibly common upper GI issues that often go hand in hand.

GRD, gastroesophageal reflex disease, and hiatal hernia.

GRD isn't just occasional heartburn, right?

It's a syndrome, eucosal damage from stomach acid refluxing up.

Super common.

Exactly.

And the core problem with GRD is usually an incompetent lower esophageal sphincter, the LES.

Think of it like a faulty valve at the bottom of the esophagus.

It allows irritating stomach contents, HCl acid, pepsin, sometimes even bile to flow back up.

That causes inflammation or esophagitis.

And what makes that valve faulty?

What weakens it?

Lots of things, unfortunately.

Alcohol, chocolate, fatty foods, nicotine, peppermint, tea, coffee, the caffeine, and certain medications.

Big ones are anticholinergics, beta blockers, calcium channel blockers, diazepam, morphine nitrates.

A long list.

Yeah.

And obesity is a huge factor, too, because it increases interabdominal pressure, literally pushing stomach contents upward, smoking as well.

I know heartburn pyrosis is the classic symptom, but what's one red flag about the heartburn itself that should prompt immediate medical attention from a nursing perspective?

That's a crucial point for patient education.

OK,

so heartburn occurring more than twice a week, or if it's severe or associated with difficulty swallowing dysphagia, or if it wakes a person up at night, any of those need medical evaluation.

And especially in older adults, new onset heartburn should always be checked out medically.

It can present atypically.

Good point.

And it can mimic other things, too.

Yes.

GERD -related chest pain can feel very much like angina burning, squeezing, radiating.

But the key difference is it's typically relieved by antacids.

Other symptoms can be respiratory, too, wheezing, coughing, especially at night, or even things like hoarseness or chronic sore throat.

So many ways GRD can manifest, and the long -term complications, they can be quite serious, can't they?

They absolutely can.

Chronic esophagitis can lead to ulcers, scar tissue forming strictures, which makes swallowing difficult.

And the most concerning complication is Barrett esophagus.

Barrett esophagus.

That's the precancerous one.

Exactly.

It's where the normal flat cells lining the lower esophagus change into column -shaped cells, like those in the intestine, due to chronic acid exposure.

This significantly increases the risk for esophageal adenocarcinoma.

So patients with Barrett's need regular endoscopic surveillance, like biopsies.

Okay, so how do we manage GRD?

Let's start with lifestyle.

Lifestyle modifications are foundational, really.

First, elevate the head of the bed about 30 degrees.

Using four 6 -inch blocks onto the bedposts or a wedge pillow works better than just piling up regular pillows.

Advise patients not to lie down for 2 -3 hours after eating.

Avoid late -evening meals or nighttime snacking.

And then the usual suspects.

Cut down on those trigger foods we mentioned, fatty stuff, chocolate, peppermint, coffee, acidic drinks like colas or orange juice.

Plus, smoking cessation, weight reduction if needed, stress management, decreasing alcohol, it all helps.

Makes sense.

And for medications, what are the mainstays?

Proton pump inhibitors.

The PPIs, like omeprazole, prilisac, or pantoprazole, protonics, are generally the most effective for healing esophagitis, usually taken once daily before the first meal.

But here's a critical drug alert.

Okay.

Long -term use or high doses of PPIs may increase the risk for fractures hip, wrist, spine.

And they can potentially lead to B12 or magnesium deficiencies, maybe even kidney issues.

So the goal is always the lowest effective dose for the shortest possible duration.

Important considerations.

What else?

Histamine 2 receptor blockers, or H2 blockers like famotidine, pepsid, or simetidine, tagamet, are also widely used.

They reduce symptoms and promote healing, maybe have a faster onset than PPIs.

And antacids provide quick, temporary relief.

Take them one three hours after meals and at bedtime, but watch the sodium content in patients with heart or renal problems and magnesium toxicity risk and renal failure.

Right.

Always checking those comorbidities.

Now let's quickly connect this to a hiatal hernia.

How does it relate?

Okay.

So a hiatal hernia is when part of the stomach actually pokes up through the diaphragm's opening, the hiatus, into the chest cavity.

Very common, especially in older women.

There are two main types.

The most common is a sliding hernia, where the junction of the stomach and esophagus slides up, especially when lying down, often associated with GER.

The other type is a parasophageal or rolling hernia.

Here the top part of the stomach, the fundus, rolls up alongside the esophagus.

This one's less common but more dangerous.

Why more dangerous?

Because the pocket of the stomach can get trapped or twisted, strangulated.

An acute parasophageal hernia is a medical emergency, causes or use of weakened diaphragm muscles, often from aging,

and that increased intra -abdominal pressure we talked about, obesity, pregnancy, heavy lifting.

Management often mirrors GERID lifestyle changes to reduce pressure, avoid tight clothes, straining.

Sometimes surgery is needed.

Okay.

Makes sense.

Now shifting again, let's talk about peptic ulcer disease, PUD.

Where the GI lining itself is actually eroding.

How does that happen?

Right.

PUD is an erosion of the GI mucosa, specifically from the digestive action of hydrochloric acid and pepsin.

It can happen in the lower esophagus, the stomach, or most commonly the duodenum.

It can be acute, which is superficial and heals quickly, or chronic, which is deeper, eroding through the muscle wall, and much more common.

And there's a difference between gastric and duodenal ulcers, right?

Key differences nurses need to know.

Absolutely.

This is important for assessment and understanding potential complications.

Gastric ulcers occur in the stomach, often the antrum.

They're less common overall, tend to happen in older adults, maybe slightly more in women.

And they carry an increased risk of becoming cancerous.

Duodenal ulcers are much more prevalent, like 80 % of all ulcers, they're in the first part of the duodenum.

Usually affect people a bit younger, maybe 35, 45, though that's changing.

And they don't typically increase cancer risk.

Okay, and I remember you saying the pain characteristics differ too.

That's critical for assessment.

Exactly.

Gastric ulcer pain is often described as burning or gaseous, maybe high in the epigastrium.

It tends to occur one, two hours after meals.

And here's the key,

food can actually aggravate the pain, makes it worse.

Duodenal ulcer pain is more often burning or cramp -like mid -epigastric.

It usually happens two to five hours after meals, or in the middle of the night.

And the key difference here, food or antacids often relieve the pain.

Food relieves it.

Interesting.

But you also mentioned silent ulcers.

Yes, and that's a huge nursing consideration.

Not all patients with ulcers experience pain.

Silent peptic ulcers are more common in older adults, and particularly in those taking NSAIs regularly.

So we can't always rely on pain as the only indicator.

We need a comprehensive assessment.

That's a critical point.

So what's actually causing these ulcers to form?

Is it always too much acid?

Not necessarily too much acid, but the acid environment is crucial.

The major risk factor, the big one, is infection with Helicobacter pylori bacteria.

H.

pylori is implicated in maybe 80 % of gastric ulcers and up to 90 % of duodenal ulcers.

Wow, that high.

Yeah.

The bacteria produce substances, like urease, that damage the protective mucosal lining and can actually trigger more acid secretion.

The other major cause is medication -induced injury, primarily from NSAIs, aspirin, ibuprofen, naproxen.

How do NSAIs cause ulcers?

They inhibit prostaglandins, which are substances that normally protect the stomach lining by promoting mucus and bicarbonate production and maintaining blood flow.

So NSAIs weaken that defense.

Taking NSAIs when you also have H.

pylori, that's double trouble, or taking NSAIs with corticosteroids or anticoagulants also significantly increases risk.

Makes sense.

So for diagnosis, what's the gold standard?

How do we find these?

Endoscopy is definitely the most accurate.

The scope allows direct visualization of the ulcer, its location, and importantly allows for biopsies.

Biopsies are crucial to tests for H.

pylori.

The rapid urease test on the tissue sample is the gold standard and also to rule out malignancy, especially with gastric ulcers.

Are there non -invasive tests for H.

pylori?

Yes, thankfully.

The urea breath test and the stool antigen test are both reliable for detecting active infection.

Blood antibody tests exist, but they can stay positive even after the infection is cured.

So they aren't great for checking if treatment worked.

Once PUD is diagnosed, what's the general management strategy, especially if H.

pylori is involved?

Well, conservative care always includes rest, both physical and emotional,

smoking cessation, limiting or stopping alcohol, and avoiding specific foods that cause individual distress.

If NSAIDs are the culprit, they ideally need to be stopped for four or six weeks.

If they must be continued, then co -therapy with a PPI or H2 blocker is essential.

For H.

pylori eradication, this is key.

Patients need antibiotic therapy.

It's usually a combination of two or three antibiotics plus a PPI.

Triple or quadruple therapy, right?

Exactly.

Typically for 14 days.

And patient adherence is absolutely vital because of growing antibiotic resistance.

You really have to stress taking the full course.

PPIs are also crucial for healing the ulcer itself by significantly reducing acid production, creating a better environment for repair.

Okay, that makes sense.

Now let's talk about the really serious stuff.

The emergency complications.

Every nurse must recognize these.

Yes, absolutely critical.

The three major complications are hemorrhage, GI bleeding, perforation, and gastric outlet obstruction.

GI bleeding is the most common complication.

Duodenal ulcers actually tend to bleed more often than gastric ones.

And perforation?

That sounds bad.

It's the most lethal.

This is where the ulcer erodes completely through the wall of the stomach or duodenum, spilling GI contents into the peritoneal cavity.

That leads to chemical peritonitis initially, followed quickly by bacterial peritonitis.

It's a surgical emergency.

And the signs of perforation, I imagine they're quite dramatic.

Yes, usually unmistakable.

Sudden severe upper abdominal pain, often described as sharp, and it quickly spreads throughout the abdomen, maybe radiating to the back or shoulders.

The abdomen becomes rigid, board -like on palpation.

Bowel sounds are usually absent.

Nausea, vomiting, rapid weak pulse, shallow respirations, signs of shock can develop quickly.

So if you suspect perforation, what's the immediate nursing action?

Notify the HCP immediately.

This isn't a wait and see.

Priorities are frequent vital signs every 15 -30 minutes looking for shock.

Keep the patient NPO.

Stop all oral or NG drugs.

Start 4V fluids, often large volumes of lactated ringers or albumin, maybe blood products if needed.

Broad -spectrum IV antibiotics are started right away.

An NG tube might be inserted for decompression.

And prepare the patient for likely emergency surgery to close the perforation.

Okay, rapid response is key.

And the third complication, gastric outlet obstruction.

Right, this happens usually with the chronic ulcers located near the pylorus.

It's caused by edema, inflammation, pylorus spasm, or, eventually, fibrous scar tissue formation.

It blocks the stomach emptying.

Patients typically report discomfort or pain that gets worse towards the end of the day.

They might feel relief from belching or vomiting.

The vomiting is often projectile and contains food particles eaten hours or even days before.

Constipation and visible stomach dilation can occur, too.

The initial aim is to decompress the stomach, so an NG tube is inserted for continuous suction.

5V fluids and electrolytes are critical because of dehydration and losses from vomiting.

PPIs or H2 blockers are given IV.

If it's due to inflammation, it might resolve.

If it's scar tissue, balloon dilation via endoscopy or surgery might be needed.

A key nursing intervention here is monitoring the gastric residual volume before starting oral intake.

You clamp the NG tube for several hours, then aspirate.

If the residual is less than about 200 mL, it suggests the obstruction is resolving and clear liquids might be cautiously started.

Very clear.

Okay, building on PED, let's look at more complex, sometimes more challenging conditions.

Let's start with stomach cancer, usually an adenocarcinoma, right?

And unfortunately, often diagnosed late with a high mortality rate.

That's sadly true.

It's more common in men, older individuals, average age around 68, and certain ethnic groups like Asian -Americans, Pacific Islanders, blacks, and Hispanics have higher rates.

The exact cause isn't fully known, but it likely involves chronic mucosal injury.

H.

pylori infection is a major risk factor again.

Also autoimmune inflammation, like impenetrable anemia, and repeated exposure to irritants think bile reflux, NSEI, tobacco smoke.

Diet plays a role too.

Diets high in smoked foods, salted fish and meat, pickled vegetables seem to increase risk.

So similar risk factors to gastritis and PUD in some ways.

Yes, there's overlap.

Conditions like atrophic gastritis, pernicious anemia itself, certain stomach polyps, and

achlarhydria, lack of stomach acid are also risk factors, and there's a family history component sometimes.

The really challenging part for nurses and clinicians is that the early symptoms are often so subtle and vague, they can easily mimic PUD.

Like what kind of symptoms?

Unexplained weight loss, maybe some indigestion, vague abdominal discomfort or pain.

Anemia is common, either from chronic slow blood loss or pernicious anemia itself.

So the patient might present with pallor, weakness, fatigue, dizziness, shortness of breath.

Stools might be positive for occult blood, sometimes feeling full early, early satiety.

Later signs indicating spread might include things like hard and large lymph nodes above the clavicle or sites.

So if those early symptoms are so vague, what's the best diagnostic tool?

How do we catch it?

Upper GI endoscopy with biopsy is the gold standard.

It allows direct visualization and tissue sampling for definitive diagnosis.

Once confirmed, staging is crucial, using things like endoscopic ultrasound, CT, MRI, PET scans to see how far it has spread.

Treatment of choice is usually surgery, aiming to remove the tumor completely, plus a margin of normal tissue.

What kind of surgeries are we talking about?

It could be a subtotal gastrectomy, removing part of the stomach.

Common procedures are the bilroth I or bilroth II, which involve reconnecting the remaining stomach to the duodenum or jejunum, respectively.

Or if the cancer is extensive or in a certain location, a total gastrectomy might be needed, removing the entire stomach and connecting the esophagus directly to the jejunum.

Chemotherapy and radiation are often used as well, either before surgery to shrink the tumor, neoadjuvant, or after to kill remaining cells, adjuvant, or sometimes for palliative

Targeted therapies are also emerging.

And the nursing care before surgery, what are the priorities?

Our role preoperatively is huge, providing emotional and physical support, of course.

But critically, addressing malnutrition is key.

These patients are often malnourished due to the cancer or symptoms, so working with dieticians for high -calorie, high -protein diets, maybe supplements, or even enteral or parenteral nutrition might be needed beforehand.

Meticulous oral care is important too, and thorough preoperative teaching about what to expect after surgery.

The tubes, like NG tubes, drains, pain management, breathing exercises, and potential changes in communication or feeding methods.

Okay, let's talk about that postoperative care after gastric surgery.

It can be quite complex, especially managing that NG tube.

It really is complex.

Post -op care focuses on maintaining fluid and electrolyte balance, preventing respiratory complications like pneumonia, deep breathing, coughing, and centrosperometry, early ambulation are vital, and managing pain effectively.

The NG tube is usually in place initially for decompression.

It decreases pressure on the new suture lines or anastomosis.

You need to carefully observe the drainage.

Small amounts of bloody drainage are normal for the first few hours, maybe two, three hours.

Then it should change to yellowish -green, bile -stained.

And the big warning about the NG tube?

Yes, this is critical.

Do not irrigate, reposition, or try to reinsert the NG tube yourself without a specific order from the surgeon or HCP.

You could inadvertently perforate the gastric mucosa or disrupt that delicate suture line.

If the tube stops draining or seems obstructed, you notify the HCP immediately.

Maintain patency gently if ordered, but don't force anything.

That's a huge safety alert for nurses.

What about other immediate complications?

Anastomotic leak is a major, potentially fatal complication we watch for closely.

Signs include tachycardia, dyspnea, fever,

increasing abdominal pain, anxiety, restlessness.

Again, immediate HCP notification is critical.

Got it.

Beyond the immediate post -op period, what are the key long -term complications patients need education about, especially after partial or total gastrectomy?

Two major ones related to eating are dumping syndrome and postpranial hypoglycemia.

Dumping syndrome happens because food, especially sugary or hypertonic fluid, rapidly dumps from the smaller stomach pouch or directly into the small intestine, since the pyloric sphincter might be removed or bypassed.

This causes a fluid shift into the bowel.

And what does that feel like for the patient?

Symptoms usually hit within 15 to 30 minutes after eating.

They feel weakness, sweating, palpitations, dizziness, maybe intense abdominal cramps, borbarygamy, loud bowel sounds, and often an urgent need to defecate.

It usually lasts less than an hour, but it's very unpleasant.

So how do we help patients manage dumping syndrome?

It sounds awful.

Nutrition therapy is absolutely crucial.

The cornerstone is small, frequent meals, like six small feedings a day instead of three large ones.

And this is key.

Advise them not to drink fluids with their meals.

Instead, take fluids 30 to 45 minutes before or after eating.

This helps slow down transit.

They need to avoid concentrated sweets, sugar, honey, syrup, because those pull fluid into the gut quickly.

Increase protein and fats, which digest more slowly.

Introduce milk or lactose -containing foods slowly as tolerance can decrease.

OK, small meals, no fluids with meals, avoid sweets, more protein fat.

Got it.

What about the other one?

Post -prandial hypoglycemia?

Right, this is considered a variant of dumping syndrome.

It happens about two hours after eating.

What happens is the rapid entry of carbs causes a surge in blood glucose, triggering an excessive release of insulin.

This then leads to a drop in blood sugar or hypoglycemia.

Symptoms are classic hypoglycemia.

Sweating, weakness, mental confusion, palpitations, tachycardia, anxiety.

How is that managed?

Similar dietary approach.

Limit the amount of sugar consumed at one time.

Small frequent meals with moderate protein and fat help stabilize blood sugar release.

If they do have symptoms, consuming sugared fluids or candy can provide immediate relief, but the goal is prevention through diet.

And one more critical long -term issue after total gastrectomy.

Pernicious anemia.

Because the stomach produces intrinsic factor, which is essential for absorbing vitamin B12, cobalamin, in the ileum.

If the stomach is removed, or even after some partial gastrectomies, intrinsic factor is lost.

This leads to cobalamin deficiency and pernicious anemia over time.

It requires lifelong cobalamin replacement therapy, usually through injections or possibly high -dose oral supplements, plus likely other vitamin mineral supplements.

Lifelong B12.

Okay.

Let's move into our final segment.

We'll cover some more common, acute, and sometimes life -threatening upper GI issues.

Gastritis, UGI bleeding, and foodborne illness.

Let's start with gastritis, basically.

Inflammation of the stomach lining.

Exactly.

Gastritis happens when that protective mucosal barrier in the stomach breaks down.

This allows HDL acid and pepsin to diffuse back into the mucosa, causing tissue edema, disruption of capillaries, and potential bleeding.

It can be acute or chronic, widespread or localized.

What are the common culprits?

The risk factors nurses should know.

Key risk factors include drugs,

especially NSAIDs and corticosteroids.

They inhibit those protective prostaglandins again.

Diet can play a role, alcohol, particularly binge drinking or chronic heavy use, and large amounts of very spicy, irritating foods.

Microorganisms are big, too.

H.

pylori is the most common bacterial cause.

It can lead to chronic gastritis and, as we know, increases the risk of PUD and stomach cancer.

Other bacteria, viruses, or fungi can cause infectious gastritis, too.

Is there an autoimmune type?

Yes, there is.

Autoimmune gastritis is when the body's immune system mistakenly attacks the stomach's own parietal cells.

This leads to a loss of these cells, which means loss of intrinsic factor production.

So just like after gastrectomy, this causes cobalamin malabsorption and eventually pernicious anemia.

It also increases stomach cancer risk.

So chronic gastritis, especially autoimmune, has that significant long -term B12 consequence

How does gastritis typically present?

Acute gastritis often causes anorexia, loss of appetite, nausea, vomiting, epigastric tenderness, and a feeling of fullness.

It's often self -limiting, lasting hours to a few days.

If it's related to alcohol, sometimes GI bleeding might be the only symptom.

Chronic gastritis symptoms can be similar, but sometimes they're vague or even absent.

The major concern with chronic, especially autoimmune, is the development of pernicious anemia over time due to that loss of intrinsic factor.

How's it managed?

For acute gastritis, the main thing is eliminating the cause, stop the offending drug, avoid alcohol, etc.

Supportive care is similar to managing nausea, vomiting.

Maybe NPO initially, IV fluids if dehydrated, anti -medics.

An NG tube might be used in severe cases to monitor for bleeding, lavage the stomach, or just keep it empty.

Then gradually reintroduce clear liquids, then solids.

PPIs, or H2 blockers, can help reduce acid and symptoms.

For chronic gastritis, you also focus on eliminating the cause if possible, like stopping alcohol or changing drugs.

If H.

pylori is present, it needs eradication with the antibiotics.

And critically, for pernicious anemia resulting from autoimmune gastritis, it requires lifelong cobalamin therapy.

A non -irritating diet, maybe six small feedings, can help.

Smoking is definitely contraindicated.

OK, now let's turn to upper GI bleeding, UGI bleeding.

This can definitely be an emergency.

Absolutely.

This is a situation where rapid assessment and intervention are truly life -saving.

UGI bleeding can present in different ways.

You might see human amnesis, vomiting blood.

If it's bright red, that suggests profuse bleeding, possibly arterial.

If it looks like coffee grounds, that means the blood has been in the stomach for a bit, interacting with the acid.

Still serious.

Malina, those black, turdy stools usually indicate slower bleeding from an upper GI source.

The blood changes color as it goes through the intestines.

Occult bleeding is small amounts not visible, detected by tests like a GUIAC test.

What are the most common causes of UGI bleeding?

Peptic ulcer disease is still the most common cause, often related to H.

pylori or NSAI juice.

Another important one, especially in critically ill patients in the ICU, is stress -related mucosal disease or SRMD.

Major trauma, burns, surgery can cause these stress ulcers.

And esophageal causes are significant, too severe esophagitis, those malory vise tears from forceful vomiting or esophageal varices, especially in patients with liver cirrhosis.

OK, so a patient presents with signs of UGO bleeding.

What is the emergency management?

This is where nursing assessment is paramount, right?

Absolutely critical.

First, you need to rapidly assess for signs of shock.

Is the patient tachycardic?

Do they have a weak pulse?

Are they hypotensive?

Are their extremities cool?

Kepler refill prolonged?

Are they apprehensive or restless?

Check the abdomen for distension, guarding bowel sounds.

Our priority interventions are immediate and simultaneous.

Get two large boar IVs established right away for fluid resuscitation and potential blood transfusion.

Start isotonic crystalloids like lactated ringers.

Packed RBCs will likely be needed.

Fluids and blood access first.

What else?

Administer oxygen.

Initiate cardiac monitoring, ECG.

Usually insert an NG tube.

This can help confirm active bleeding, decompress the stomach, and prepare for endoscopy.

An indwelling urinary catheter is placed to monitor hourly urine output, a key indicator of tissue perfusion.

And start IV PPI therapy immediately.

Usually a bowl is followed by an infusion to decrease acid production and help stabilize any clot.

Constant monitoring then?

Constant vigilance.

Monitor vital signs frequently, every 15 -30 minutes initially.

Assess level of consciousness, oxygen saturation, ECG rhythm, bowel sounds, intake and output meticulously.

Keep the patient MPO.

Provide reassurance this is terrifying for the patient.

Endoscopy is usually performed quickly once the patient is stabilized to identify the bleeding source and often treat it directly.

Example, cauterization, clipping.

Very important steps.

Lastly, let's briefly touch on foodborne illness or food poisoning.

Right.

This is acute GI distress, nausea, vomiting, diarrhea, abdominal pain caused by eating contaminated food or liquids.

Many bacteria can cause it.

For nurses, recognizing key types is useful.

Botulism from Clostridium botulinum toxin, often in improperly canned foods, is serious because it causes CNS symptoms like double vision, breathing problems, paralysis,

along with GI upset.

It's a neuroemergency.

And what about E.

coli?

Yes.

Specifically, Escherichia coli O157H7.

This strain is often linked to undercooked ground beef, contaminated leafy greens or raw milk, can cause severe illness with bloody diarrhea, and in some cases, especially in older adults, it can lead to hemolytic uremic syndrome or HUS.

HUS?

That's the really dangerous one.

Yes.

HUS involves red blood cell destruction, kidney failure.

It can be life threatening.

And here's your critical nursing alert for E.

coli O157H7.

Okay.

It's crucial to avoid antidiarrheal agents like lopramide and antibiotics in these cases.

They can actually increase the risk of developing HUS or make it worse.

Management is mainly supportive focusing on fluid and electrolytes.

Our biggest role here really is prevention through patient education, proper food handling, thorough cooking, especially ground beef to 160 degrees Harris, refrigeration, washing produce, hand hygiene, all the basics we know but need to constantly reinforce.

Excellent point.

Okay.

Wow.

That was a really comprehensive journey through upper GI problems.

From that everyday nuisance of nausea and vomiting right up to the critical emergencies like PUD complications and UGI bleeding and the long -term challenges of oral and stomach cancers.

We've really distilled how intricate and vital this system is.

I think the key takeaway for you, our future nurses listening, is that your keen assessment skills, your deep understanding of the why the pathophysiology and your patient education are just absolutely paramount.

Absolutely.

It's all about connecting those dots.

Seeing the link between maybe subtle symptoms, lifestyle factors and the underlying pathology.

Yeah.

That's what makes you an invaluable clinician.

Whether it's advising on those dietary changes for GERD, carefully monitoring for post -surgical complications like dumping syndrome or recognizing those silent signs of a peptic ulcer, your role in promoting health and preventing severe outcomes is just critical.

Keep practicing that NCLEX style thinking.

Always ask yourself, why does this specific detail matter to my patient right now?

That's excellent advice.

Thank you so much for joining us for this deep dive into upper GI problems.

We really hope this has given everyone listening a clearer, more confident grasp of this complex chapter.

And from the Last Minute Lecture Team, thank you for tuning in and keep learning.