Comprehensive Clinical Notes on Immunology, Oncology, and Emergency Nursing
Allergy Pathophisiology and Clinical Assessment
Allergy testing is performed as a diagnostic measure to identify specific hypersensitivities through skin or blood tests. Intradermal tests involve injecting a small amount of antigen into the skin. It is critical that patients discontinue all medications for days prior to the test to ensure accurate results. Reaction severity is quantified by assessing welps, which are measured on a scale up to .
Allergies represent a pathophisiology of overactive immunity accompanied by excessive inflammation. This condition is triggered by an allergen, which may be inhaled, ingested, injected, or make contact with the skin. Type hypersensitivity constitutes an anaphylactic hes Ponse, commonly triggered by latex, Bee Venom, peanuts, iodine, and Shellfish.
Angioedema is a Type reaction involving blood vessels, all layers of the skin, mucous membranes, and subcutaneous tissue. It is most frequently observed in the lips, face, tongue, larynx, and neck. Anaphylaxis is another Type manifestation where bronchiolar smooth muscles and blood vessels are affected, leadng to widespread blood vessel dilation, decreased Clo, and bronchoconstriction.
Signs and symptoms of these reactions include Ahinorrhea, JBP, syncope, urticaria, sneezing, itchy, watery, eyes, congestion, excess mucus, incontinence, gi symptoms, dyspnea, hives, swelling, hoarseness, a rapid weak pulse, bronchospasm, stridor, and Voice Change. Risk factors for angioedema assessment include determining when the reaction started and if any drugs were taken.
Nursing interventions for angioedema are managed as an acute emergency with therapy to facilitate gas exchange. Possible intubation is indicated if stridor occurs or if there is an inability to swallow. For anaphylaxis, initiate a rapid hes Ponse. The intervention is the administration of epi (epinephrine). Assessment of gas exchange is the priority. Epi should be administered or repeated every to mins. If doses of IM (intramuscular) epinephrine do not work, proceed with IV epi. Other treatments include obtaining IV access, having intubation equipment ready, applying via NR, infusing NS (normal saline), and keeping feet elevated. Medications involve epinephrine, antihistamines, and corticosteroids; note that drugs can shrink edema, however, if stopped, the edema can redevelop.
Systemic Lupus Erythematosus (SLE): Autoimmune Dysfunction
Lupus is a chronic progressive autoimmune disorder characterized by inflammatory immune attacks against multiple tissues and organs, leading to a loss of tissue integrity. It is classified as a Type allergy and follows a course of exacerbation and remission. Diagnostic tests assess for auto antibodies and accompanying conditions such as anemia, leukopenia, and kidney disfunction. Specific tests include ESR, CBP, ECG, CT, and MRI.
Clinical signs and symptoms of SLE include vasculitis, chronic fatigue, alopecia, cardiovascular impairment, muscle aches, osteoporosis, anemia, oliguria, generalized pain, friction rub, seizures, and a characteristic butterfly rash. Joints are significantly affected, particularly the feet, ankles, knees, wrists, and fingers, usually occurring bilaterally. Kidney damage can lead to Protienuria, occurring when the glomerulus is damaged and protein filters into the urine. Risk factors for flare-ups include viral infection, drugs, hormones, sun exposure, UV Rays, and chemotherapy.
Nursing interventions involve noting physical changes from the past years and assessing for painful, red, and swollen Jionts. Monitoring temperature is the sign of exacerbation. Patients should be monitored for blood pressure (BP), heart rate (HR), and pulse quality, and they should avoid large crowds. Potential complications include CKD, cardiovascular impairment, and osteonecrosis.
Medical treatments for SLE include acetaminophen and NSAIDs (naproxen, ibuprofen, indomethacin, Celecoxib) for daily pain and inflammation, as well as aspirin. Corticosteriods are used during flare-ups; if taken daily, the dose must be tapered back down once the flare-up concludes. Patients on corticosteroids should take calcium to prevent osteoporosis. Short term side effects of steroids include acne, HTN, fluid retention, anxiety, and being emotional, while long term use leads to weight gain, fragile skin, thin hair, and stretch marks. Antimalarial drugs like hydroxychloroquin provide immunodulating and anticlotting effects. Patients on hydroxychloroquin must have frequent eye exams before starting and every mths. Belimumab is another option, though users must not receive a live vaccine for days before treatment. Education focuses on proper rest, stress avoidance, low impact activities, limiting sun exposure with sunscreen and protective clothing, and using moist heat for pain. Patients should not get pregnant while on these treatments.
Lyme Disease Stages and Management
Lyme disease is characterized by chronic inflammation and the release of cytokines that intensify tissue injury, initiated by a spirochete transmitted through a tick bite. Pathophysiology is divided into three stages. Stage (early localized) presents with a bull's eye rash and low grade fever. Stage (early disseminated) occurs if treatment is ineffective within to weeks, presenting with pain in ankles, knees, and wrists, dysrhythmias, palpitations, dyspnea, and flu-like symptoms. Stage (late stage) involves arthritis, dysrhythmias, heart block, and cognitive deficits. Symptoms typically begin within to days post-bite.
Risk factors are mitigated by using DEET, avoiding heavily wooded areas, wearing light colors, long sleeves, and pants, and wearing closed-toe shoes. Patients should bathe immediately after a tick is removed. Remove ticks carefully and dispose of them with alcohol or by flushing them down the toilet. Medications include a to day course of Doxycycline, amoxicillin, or cefuroxime. In advanced cases, IV antibiotics are required.
Human Immunodeficiency Virus (HIV) and Pathogenesis
HIV is a retrovirus that inserts viral RNA into a host cell, which then converts into viral DNA. The virus uses CD4 cells to replicate, producing up to billion particles per day. As the viral load increases, the CD4 cell count decreases, weakening the immune system. Transmission occurs through all bodily fluids. Diagnostic testing includes ELISA to detect HIV antibodies; if positive, it must be confirmed with a Western Blot. These two tests combined are accurate. Viral load and CBC are also monitored. A high viral load indicates a high transmission risk.
Pathophysiology is staged by CD4 counts: Stage (acute) involves confirmed HIV with CD4 counts . Stage (chronic) involves confirmed HIV with CD4 counts between and . Stage (AIDS) involves confirmed HIV with CD4 counts or a documented AIDS-defining illness. General symptoms include fever, chills, headache, night sweats, muscle aches, rash, and sore throat.
Opportunistic infections are common in Stage . Examples include Candidiasis (thrush, mouth pain, difficulty swallowing), Cryptosporidiosis (severe intestinal infection, diarrhea, and weight loss), Toxoplasmosis (from cat feces or undercooked meat, causing altered mental status, seizures, and headache), PCP or PJP (dry persistent cough, weight loss, fever, fatigue, crackles, tachypnea), Histoplasmosis (hespiratory infection, cough, chest pain, dyspnea, fever, chills, weight loss), TB (fever, headache, dyspnea, cough, lymph node enlargement), and KS (Kaposi's sarcoma: pink, red, purple, or brown lesions with a yellow halo).
Nursing interventions for HIV include collecting a thorough history in private, assessing for opportunistic infections, and implementing specific precautions. Lung sounds are assessed for PCP. For Toxoplasmosis, assess LOC and keep HOB at degrees. Histoplasmosis requires antipyretics and , while Cryptosporidiosis requires electrolyte monitoring. TB requires airborne precautions. General care includes preventing infection, inspecting skin for lesions, limiting exposure to crowds, and monitoring renal function/electrolytes if on medications. Antiretroviral (RX) therapy controls viral replication but does not kill the virus; side effects include appetite loss, diarrhea, fatigue, increased cholesterol, mood changes, N/V, and insomnia. Skipping or missing a dose can lead to drug resistance. Other meds include gabapentin for pain (with narcotics as backup), bronchodilators, and glucocorticoids to reduce inflammation. Trimethoprim with sulfamethoxazole is used prophylactically.
Patient education emphasizes safe sex, needle exchange info, hand washing, and avoiding crowds. Patients should not dig in dirt, must take their temperature daily, avoid undercooked meat/fish/eggs, and not change pet litter. Dietary needs include high protein and high calorie food with supplements. Fruit and vegetables must be washed and food properly refrigerated. For candida, the tongue should be brushed with a soft toothbrush.
Environmental Emergencies: Thermal Regulating Injuries
Heat Stroke is a medical emergency where the body temperature may exceed . Thermoregulation fails and the body cannot adjust for the elevation in temperature. Diagnostic signs include tachypnea, hot/dry skin, anxiety, confusion, coma, seizures, hypotension, tachycardia, crackles, and abnormal clotting. Lab values may show electrolyte imbalances and altered renal function. At the scene, nursing interventions include ensuring a patent airway, removing the patient from heat and clothing, spraying with cold water, fanning, and placing cold packs. At the hospital, provide , start an IV, use a cooling blanket, and obtain baseline labs. Continuous temperature monitoring and a catheter for I/O measurements are required. Do not use aspirin or antipyretics. Stop cooling measures once the temperature reaches .
Hypothermia occurs when the body temperature is . Causes include cold water, acute illness, traumatic injury, shock, medications, and hypothyroidism. Severity is staged: Mild ( to ), Moderate ( to ), and Severe (). Symptoms of mild hypothermia include shivering, slurred speech, and loss of coordination. Moderate hypothermia presents with muscle weakness, confusion, incoherence, and impaired cognition. Severe hypothermia involves bradycardia, hypotension, dysrhythmias, and being neuro non-responsive. Critical lab values reflect muscle clotting, acid-base imbalance, and electrolyte imbalances. Complications include renal failure, ARDS, and metabolic abnormalities. Interventions include positioning the patient supine and monitoring temperature. Trunth (trunk) needs to be warmed before extremities. Methods include heated blankets, warm IV fluids, heated , and heated bladder or gi lavage. Drugs should be administered with caution due to unpredictable metabolism; consider holding drugs except pressors until the temperature reaches . Patients should drink warm liquids with high carbohydrates and avoid caffeine or alcohol.
Frostbite occurs when body tissue freezes and continues to damage tissues, presenting with a white-waxy appearance. At the scene, remove jewelry or constricting items and place the affected area in a warm zone like the underarms. In the hospital, perform rapid re-warming and administer IV pain relief. Handle the area gently and elevate it above the heart. Do not use dry heat or massage the area. Assess pulses and muscle weakness, give a tetanus vaccine, and apply loose non-adherent sterile dressings while avoiding compression.
Lightning Injuries and High Altitude Illness
Lightning injuries can occur by direct strike, splashing off an object, or traveling through the ground. Symptoms include confusion, coma, temporary paralysis, cardiac arrest, and CNS abnormalities. Rhabdomyolysis is a significant complication where the by-product of skeletal muscle destruction circulates, leading to renal failure and tea-colored urine. At the scene, stabilization of the spine and airway is priority. Victims are not electrically charged and are safe to touch. In the hospital, manage ABCs, obtain a lead ECG, CT scans, and assess wounds. Prevention includes staying away from metal rods and wet fabric. If in a tent, stay away from poles. If outdoors and lightning is imminent, crouch on the balls of your feet and tuck your head; do not lie on the ground or touch it with your hands. Leave water immediately and stay inside solid-hooded cars with windows closed. If in a house, stay away from doors, windows, fireplaces, and plumbing, and turn off electrical equipment.
High Altitude Illness occurs at elevations of meters or more. Acclimatization is the physiologic process where the body adapts to lower pressure. Hypoxia-ventilatory response involves increasing the breathing rate (BR) to improve delivery, leading to respiratory alkalosis. Within to hours, the kidneys excrete excess bicarb. Within hour, BP and Clo increase, and cerebral blood flow increases. Common forms include AMS (Acute Mountain Sickness), HACE (High Altitude Cerebral Edema), and HAPE (High Altitude Pulmonary Edema). AMS symptoms include throbbing headache, anorexia, N/V, and chills. HACE symptoms include apathy, ataxia, confusion, seizures, coma, and death. HAPE involves poor exercise tolerance, persistent dry cough, cyanosis, and pink frothy sputum. Risk factors include obesity, chronic illness, and dehydration. Treatments include moving to a lower altitude and administering . Education focuses on planning a slow ascent, avoiding overexertion, and avoiding alcohol or sleeping pills. Medications include Acetazolamide (causes bicarb diuresis to treat AMS), Dexamethasone (for cerebral edema), and Phosphodiesterase inhibitors (tadalafil, sildenafil, nifedipine) for pulmonary vascular effects.
Solid Organ Transplantation: Nursing Management and Rejection
Organ transplantation requires precise timing and strict criteria. Lung transplants remain viable for to hours outside the body and can involve one lobe, a single lung, or double lungs. Recipients must have severe irreversible damage but be healthy enough for surgery; exclusions include cancer, HIV/AIDS, or irreversible heart/liver/kidney damage. Donors must be infection and cancer-free with matching tissue/blood types. Post-op, lung patients are intubated for at least hours with chest tubes and A-lines. Problems include bleeding, infection, and rejection. Antirejection drugs are used for life, but corticosteroids are avoided in the first to days.
Heart transplants are viable for to hours. Candidates must have a life expectancy year, be years old, be functional Class or , have no active infection or substance misuse, and have stable psychosocial status. Post-op, monitor for tamponade. The new heart is denervated and unresponsive to vagal stimulation; Atropine and Digoxin are avoided. Isoproterenol supports HR and Clo. Denervation causes orthostatic hypotension, so patients must change positions slowly. Immunosuppressants are required for life, and regular biopsies detect rejection. Symptoms of rejection include SOB, fatigue, fluid gain, bradycardia, hypotension, and afib. CCBs prevent coronary spasms.
Liver transplants are viable for to hours, often necessitated by Cirrhosis or Hepatitis B/C. Post-op complications include vascular/biliary obstruction and rejection. Rejection signs include tachycardia, fever, RUQ pain, decreased bile volume, and increased jaundice or bilirubin. Prophylaxis antibiotics and cultures from lines/tubes are standard. Interventions include monitoring neuro status, clotting problems, and reporting abdominal rigidity or distention.
Kidney transplants are viable for to hours. Candidates require dialysis within hours of surgery and may receive blood transfusions before. Post-op, catheters are used for hourly I/O and bladder decompression. Urine may be pink or bloody initially. Daily U/A for glucose and daily weight are essential. Complications include thrombosis (within to days), renal artery stenosis, and rejection.
Hyperacute Graft Rejection occurs within hours due to pre-existing antibodies, resulting in organ necrosis; it is treated with plasmapheresis or organ removal. Acute Graft Rejection occurs within the first months, presenting with fever, tenderness, fatigue, and SOA. It is treated with rescue therapy (high steroids, antilymphocyte globulin, and increased antirejection meds).
Oncology: Tumor Classification and Cancer Prevention
Benign tumors consist of normal cells growing in the wrong place. Malignant tumors are cancerous and harmful to normal tissue; they are migratory because they do not bind together, allowing for metastasis. A Primary tumor is identified by the tissue from which it arose, while a Secondary tumor occurs when it metastasizes. Risk factors include chemical, physical (UV, X-rays, radiation), viral, and dietary factors. Dietary recommendations include avoiding animal fat and nitrates, minimizing red meat, and eating foods high in fiber and Vitamin A.
The Seven warning signs of cancer (CAUTION) include: Change in bowel/bladder habits, A sore that doesn't heal, Unusual bleeding, Thickening or lumps, Indigestion or difficulty swallowing, Obvious change in wart/mole, and Nagging cough or hoarseness.
Primary Cancer Prevention involves stopping smoking, modifying diets, removing "at risk" tissue (moles, colon polyps), chemoprevention (Tamoxifen for breast cancer), and vaccinations (HPV). Secondary Cancer Prevention involves screening: Mammo yearly for age ; Pap every years ( to ) and every years ( to ); Breast self-exams monthly ( days after period or same day monthly if no period); Fecal occult blood annually; Colonoscopy at then every years; Clinical breast exams every years ( to ) and annually for ; and Rectal exams for .
Cancer Treatment Modalities
Surgery types include Prophylactic (removal of at-risk tissue), Diagnostic (biopsy), Debulking (partial removal), Curative (complete removal), Palliative (symptom relief), and Reconstructive (improving function/appearance).
Radiation damages a cell's DNA. External Beam radiation is delivered from outside the body, with the tumor location marked on the skin. Bradytherapy (internal radiation) involves direct contact with the tumor through catheters or ingestion; the patient is radioactive only while the source is inside. Side effects include acute responses (alopecia, N/V, skin reactions) and late responses (brain necrosis, pulmonary fibrosis, cardiomyopathy). Care for patients with sealed implants requires a private room, caution signs, closed doors, and staff wearing dosimeter badges and lead aprons. Skin care involves washing with soap and water daily, patting dry, avoiding friction, not removing markings, and avoiding sun exposure during and for year after treatment.
Chemotherapy is used for survival and cure but is not a cure for metastatic disease. It should not be given through a peripheral IV; monitor for blood return at the access site. Side effects include cardiac damage, loss of bone density, neutropenia, and thrombopenia.
Precautions for Neutropenia include private rooms, inspecting skin/mucosa, encouraging activity, keeping dedicated equipment in the room, and avoiding indwelling catheters. Patients should avoid crowds, not share toiletries, bathe daily, avoid standing water/room temp fluids for hour, wash produce, not clean pet litter, and report temperatures . Precautions for Thrombocytopenia (Platelets ) include cautious repositioning, avoiding IM/venipunctures, applying ice to trauma, avoiding rectal trauma, using soft bristle brushes or sponges, electric razors, no aspirin, and no contact sports.
Specific Malignancies and Clinical Features
Skin Cancer risk factors include sun damage and genetics. Assessment looks for irregular borders and multiple colors. Prevention involves avoiding sun and tanning beds and using sunscreen. Head and Neck Cancer is usually slow-growing squamous cell carcinoma. Risk factors include tobacco/alcohol use, chronic laryngitis, and HPV. Warning signs include oral lesions that don't heal in weeks, oral bleeding, and persistent ear pain. Post-op care is critical for the first hours, monitoring airway and evaluating grafts for hours.
Lung Cancer is often a failure of cellular regulation in bronchial epithelium due to repeated exposure to inhaled substances (smoking, asbestos, air pollution). Symptoms include hemoptysis, change in endurance, and clubbing in fingers. Colorectal Cancer commonly metastasizes to the liver. Rectal bleeding is the most common sign. Diets should be high fiber and low animal fat.
Breast Cancer treatment is managed as a chronic disease for metastatic cases. Assessment uses the "face of clock" method to describe shape, size, and consistency of masses. Cervical Cancer risk factors include HPV and many sexual partners. The primary symptom is painless vaginal bleeding. Prostate Cancer diagnosis involves the PSA glycoprotein test combined with rectal exams; symptoms include difficulty starting urination and retention. Testicular Cancer is common in younger men, presenting as painless enlargement or hard swelling.
Life-Threatening Oncologic Emergencies
Hypercalcemia occurs in multiple myeloma and bone metastasis as bone breakdown releases calcium. Symptoms include muscle weakness, loss of DTR, dehydration, and ECG changes. Interventions include IV hydration and loop diuretics. Do not use thiazide diuretics as they increase calcium reabsorption. Bisphosphonates provide temporary relief.
Spinal Cord Compression occurs when a tumor enters the cord or vertebrae collapse. Symptoms include back pain, loss of sensation, and inability to distinguish pinpricks or vibrations. High dose steroids and high dose radiation are used immediately to preserve function.
Superior Vena Cava Syndrome is common in mediastinal tumors, causing edema of the face/head, engorged blood vessels in the upper body, and cyanosis. Symptoms worsen when supine. Treatment includes stents, anticoags, and chemo/radiation.
Tumor Lysis Syndrome happens when large numbers of cancer cells are destroyed rapidly, releasing potassium and uric acid. Excessive uric acid blocks the kidneys. Treatment includes hydration (at least mL/day), allopurinol to promote uric acid excretion, and potentially dialysis.
Emergency Nursing and Triage Principles
Emergency department nurses manage diverse populations and specialize in teams such as forensic nurse examiners (SANEs) and psychiatric crisis nurses. Interprofessional teams include EMTs (basic life support) and Paramedics (advanced life support, including intubation and needle chest decompression).
Staff safety concerns focus on disease transmission and personal safety from violent patients/visitors. Patient safety concerns include fall risk, medical errors, and skin breakdown. Standard precautions and unique patient identifiers are mandatory. Triage sorts patients into three priority levels: Emergent (immediate threat to life/limb, e.g., stroke, respiratory distress), Urgent (needs quick treatment but not immediately life-threatening, e.g., renal colic, multiple fractures), and Non-urgent (can wait several hours, e.g., simple fractures, rashes).
The Primary Survey and Resuscitation follow the ABCDE sequence: A (Airway/C-spine protection - intubate if GCS ), B (Breathing), C (Circulation), D (Disability/GCS evaluation), and E (Exposure - remove clothes and prevent hypothermia).", "title": "Comprehensive Clinical Notes on Immunology, Oncology, and Emergency Nursing"}