Month: August 2024

2 best resources to Prepare MCAT in 2024 UWorld Vs Kaplan

Introduction

UWorld Alternatives: Use these tools for USMLE Preparation 2024

What is USMLE?

What is UWorld?

Why is UWorld important for medical students?

UWorld is considered essential for medical students, particularly those preparing for the USMLE, for several reasons:

1. High-Yield Content

• UWorld focuses on the most important and frequently tested topics, often referred to as “high-yield” material. This helps students concentrate on the areas that are most likely to appear on their exams.

2. Realistic Exam Simulation

• The questions in UWorld are designed to closely resemble the style, format, and difficulty level of the actual USMLE exams. This gives students a realistic practice experience, reducing surprises on test day.

3. Deep Understanding of Concepts

• UWorld’s detailed explanations for each question not only clarify the correct answer but also cover why other options are incorrect. This fosters a deeper understanding of medical concepts, which is crucial for both exams and clinical practice.

4. Performance Tracking

• UWorld provides robust analytics that allow students to track their progress, see how they perform compared to peers, and identify strengths and weaknesses. This data-driven approach helps in creating a focused study plan.

5. Integration of Knowledge

• The questions often require integration of knowledge across different medical disciplines, reflecting how medicine is practiced in real life. This not only prepares students for the exam but also for their future roles as physicians.

6. Adaptability and Customization

• UWorld allows students to customize their practice by selecting specific subjects or systems, adjusting question difficulty, and creating timed or untimed practice sessions. This flexibility is valuable for tailoring study sessions to individual needs.

7. Confidence Building

• Regular practice with UWorld helps build confidence by familiarizing students with the exam format and improving their test-taking strategies, time management, and critical thinking skills.

8. High Success Rates

• Many top-performing medical students attribute their success on the USMLE to consistent practice with UWorld. It’s often recommended by medical schools and peers as one of the most effective study tools available.

What other examinations is UWorld important for?

UWorld is widely used for preparing for several important examinations across different fields, in addition to the USMLE. Here are some of the key exams where UWorld is particularly valuable:

What are the Alternatives to Uworld?

What is tinea faciei?

It is infection of face with a dermatophyte fungus. It does not include infection of beard and moustache area, which is called tinea barbae. Tinea faciei is uncommon and often misdiagnosed at first.

What causes tinea faciei?

Tinea faciei can be due to an anthropophilic (human) fungus such as Trichophyton rubrum (T rubrum). Infection often comes from the feet (tinea pedis) or nails (tinea unguium) originally. Zoophilic (animal) fungi such as Microsporum canis (M canis) is acquired from cats and dogs, and T verrucosum, from farm cattle, are also common.

How is tinea faciei diagnosed?

Tinea faciei resembles tinea corporis (ringworm). It may be acute (sudden onset and rapid spread) or chronic (slow extension of a mild, barely inflamed, rash). There are round or oval red scaly patches, often less red and scaly in the middle or healed in the middle. Lesions are usually asymmetric and it is often unilateral. It is frequently aggravated by sun exposure. It may presenta as kerion (fungal abscess).

What should we care if we have tinea faciei?

It is essential to look for and treat tinea infection elsewhere (look at the feet, groins, and nails) and in a suspected zoophilic infection, identify, isolate and treat the source animal.

Look at these dermatology question for your upcoming exams. 

Tinea faciei pathophysiology?

-Tinea faciei is the name used for infection of face with a dermatophyte fungus(T.rubrum)

Clinicalℹ️:round and oval red 🔴(less scaly in middle) scaly patches Acute(Sudden onset and rapid spread),Triggered by sun ☀️ 

Read how to differentiate tinea from acne vulgaris here. 

What is treatment of Tinae faciei?

✅Terbina,itraconzole, fluconazole

Here is dose and route written for treatment of Tinea faciei:

1. Cap Itraconazole 100 mg PO BD 4 weeks OR
2. Tab Itraconazole 250 mg PO OD 6 weeks (upto 12 weeks for onychomycosis) OR
3. Cap fluconazole 150 mg once weekly upto 6 weeks
4. Oint clotrimazole or terbinafine or  Ketoconazole luliconazole or miconazole nystatin or topically one to three times a day 
5. Antihistamines like ceterizine, fexofenadine, levoceterizine or ebastine 
6. ketoconazole soap can be used.

Please make sute the liver function is intact before prescribing aboven=mentioned medications.

Tumor markers – Which tumor marker to send?

a cancer Image by mcmurryjulie from Pixabay

Introduction of Tumor markers

Where do tumor markers come from ?

What the common tumor markers and what are they used to diagnose ? List

Here are some common tumor markers and the types of cancer they are associated with:

Some MCQs with solution in Pathophysiology/ Oncology

Some MCQs with solution in Pathophysiology/ Oncology

Question No 1

Following routine colonoscopy screening, a client is told that he had several polyps removed. The client began crying stating, “I just can’t deal with cancer. I’m too young.” The nurse responds:

A) “Don’t worry. We have some great cancer doctors on staff. I’m sure chemo will help you fight it.”

B) “Maybe if you’re lucky, they have stopped it from metastasizing to your liver.”

C) “A simple intestinal surgery will cure you.”

D) “Most colon polyps are not cancerous. The biopsy results will direct your care.”

Question No 2

A lung biopsy and magnetic resonance imaging have confirmed the presence of a benign lung tumor in a client. Which of the following characteristics is associated with this client’s neoplasm?

A) The tumor will grow by expansion and is likely encapsulated.

B) The cells that constitute the tumor are undifferentiated, with atypical structure.

C) If left untreated, the client’s tumor is likely to metastasize.

D) The tumor is likely to infiltrate the lung tissue that presently surrounds it.

Question No 3

A newly diagnosed lung cancer client asks how his tumor spread (metastasized) so fast without displaying many signs/symptoms. The nurse responds that malignant tumors affect area tissues by:

A) Increasing tissue blood flow

B) Providing essential nutrients

C) Liberating enzymes and toxins

D) Forming fibrous membranes

Question No 4

A client had a positive Pap smear. The surgeon diagnosed “cancer in situ of the cervix.” The client asks, “What does this mean?” From the following statements, which is most appropriate in response to this question? The tumor has:

A) Been walled off within a strong fibrous capsule

B) Developed a distant infiltration

C) Not crossed the basement membrane, so it can be surgically removed with little chance of growing back

D) Grown undifferentiated cells that no longer look like the tissue from which it arose

Question No 5

While studying to become chemo-certified, the nurse reviews some basic concepts about cancer cells. When a client asks about why the tumor grows so fast, the nurse will respond based on which of the following physiological principles? Select all that apply.

A) Cancer cells have shorter cell cycle times than normal cells.

B) Cancer cells do not die when they are programmed to die.

C) Growth factors prevents cancer cells from entering resting (G0) cell cycle phase.

D) Cancer cells will reach a balance between cell birth and cell death rate.

E) Cancer cells never reach a flattened growth rate.

Question No 6

While looking at cancer cells under a microscope, the instructor asks the students to describe the cells. Which of the student answers are accurate? Select all that apply.

A) The cells are in different sizes and shapes.

B) The nucleoli are larger than normal.

C) The cells are contact inhibited.

D) The cells do not resemble the tissue of origin.

E) The cells are attached to an extracellular matrix.

Question No 7

The angiogenesis process, which allows tumors to develop new blood vessels, is triggered and regulated by tumor-secreted:

A) Procoagulants

B) Growth factors

C) Attachment factors

D) Proteolytic enzymes

Question No 8

Which of the following processes characterizes an epigenetic contribution to oncogenesis?

A) A DNA repair mechanism is disrupted.

B) A tumor suppressor gene is present, but it is not expressed.

C) Cells lose their normal contact inhibition.

D) Regulation of apoptosis in impaired, resulting in accumulation of cancer cells.

Question No 9

An oncology nurse is caring for a client with newly diagnosed B-cell lymphoma. Extensive blood work has been drawn and sent to the lab. Results reveal an elevated antiapoptotic protein BCL-2 level. The client/family asks, “What does this mean?” The health care provider bases his or her response on the fact that:

A) The client’s immune system is trying to kill the cancer cell by sending this protein to engulf it.

B) This is a good result. Normal cells undergo apoptosis if DNA is damaged in any way.

C) This means the cancer cells have found a way to survive and grow even with damaged DNA.

D) The client’s body is trying to limit the blood supply to the cancer cells by producing high levels of this protein.

Question No 10

A farmer’s long-term exposure to pesticides has made the cells in his alveoli and bronchial tree susceptible to malignancy. Which of the following processes has taken place in the farmer’s lungs?

A) Promotion

B) Progression

C) Initiation

D) Differentiation

Question No 11

Genetic screening may be indicated for individuals who have a family history of which of the following neoplasms?

A) Liver cancer

B) Multiple myeloma

C) Leukemia

D) Breast cancer

Question No 12

A public health nurse has cited a reduction in cancer risk among the many benefits of maintaining a healthy body mass index. Which of the following facts underlies the relationship between obesity and cancer?

A) Obesity can cause inflammation and hormonal changes that are associated with cancer.

B) Adipose tissue is more susceptible to malignancy than other types of connective tissue.

C) Increased cardiac workload and tissue hypoxia can interfere with normal cell differentiation.

D) Increased numbers of body cells increase the statistical chances of neoplastic cell changes.

Question No 13

Which of the following dietary guidelines should a nurse provide to a group of older adults to possibly decrease their risks of developing colon cancer?

A) “As much as possible, try to eat organic foods.”

B) “Regular vitamin supplements and a low-carbohydrate diet are beneficial.”

C) “Try to minimize fat and maximize fiber when you’re planning your meals.”

D) “Eat enough fiber in your diet that you have bowel movement at least once daily.”

Question No 14

A 40-year-old female has been diagnosed with hepatocellular carcinoma. When asked what causes this cancer, the physician looks at the history and responds, “I see in your history, you have had:

A) Hepatitis B related to IV drug use as a teenager.”

B) Numerous admissions for COPD exacerbations requiring steroids.”

C) Three miscarriages with no live births.”

D) Your uterus and ovaries removed for endometriosis.”

Question No 15

A male client with a diagnosis of liver cancer has been recently admitted to a palliative care unit following his recent development of bone metastases. His family shares with the nurse that even though he is usually a “big eater,” he just isn’t interested in food. This has resulted in a loss of muscle mass. Which of the following factors may underlie the client’s change in nutritional status?

A) The action of cytokines and persistent inflammation

B) Loss of appetite due to fatigue and pain

C) Changes in peptide hormone levels

D) Production of onconeural antigens by cancerous cells

Question No 16

Although clinical manifestations vary with the type of cancer and organs involved, the oncology nurses have observed that the most frequent side effects clients with cancer experience are: Select all that apply.

A) Copious lymph flow

B) Sleep disturbances

C) Involuntary weight gain

D) Visceral organ expansion

E) Lack of energy

Question No 17

Paraneoplastic syndromes are manifestations of cancer that often result from:

A) Radiation and chemotherapy

B) Compression of area vessels

C) Tumor-related tissue necrosis

D) Inappropriate hormone release

Question No 18

A client with nonspecific signs/symptoms has gone to the primary health care provider. The client’s chief complaints revolve around extreme fatigue, unplanned weight loss, and being so weak in the muscles. The diagnostic workup included a carcinoembryonic antigen (CEA) tumor marker. The CEA result was elevated. The nurse should anticipate the physician will order which of the following diagnostic tests related to the elevated CEA? Select all that apply.

A) Testicular ultrasound

B) Colonoscopy

C) Mammogram

D) Thyroid scan

E) Brain CT

Question No 19

A client is scheduled for a bronchoscopy related to a history of “bronchitis” for the last 3 months that has been unresponsive to antibiotics. The nurse shares with the client that a primary purpose for this bronchoscopy is to help diagnose the problem by:

A) Visualizing airways looking for adhesions

B) Opening airways looking for any aspirated food

C) Flushing out the airway to remove debris and sputum

D) Taking tissue biopsy and looking for abnormal cells

Question No 20

A breast cancer client has just learned that her tumor clinical stage is T3, N2, M0. After the physician leaves, the client asks the nurse to explain this to her again. The nurse will use which of the following statements in his or her answer? Your:

A) Tumor is very small and has zero number of mitoses.

B) Tumor has metastasized to at least three distal sites and you have cancer in your lymph nodes.

C) Tumor is large and at least two lymph nodes are positive for cancer cells.

D) Extent of disease is unknown, but it looks like your cancer has stayed intact and not spread to the bloodstream.

Question No 21

Which of the following subjective/objective findings can be considered an adverse effect to the radiation treatment the client is undergoing to “shrink” a tumor prior to surgery? Select all that apply.

A) Urine output less than 30 mL/hr (low)

B) Increase production of nasal secretions

C) Stiff, painful joints in the AM

D) Hemoglobin 9.0 g/dL (low)]

E) Complains of frequent nausea and vomiting

Question No 22

A 51-year-old client has been diagnosed with stage IV breast cancer with lung metastases. The oncologist sits down with the client/family to explain treatment options. The nurse knows that which of the following treatment options will be discussed for her cancers?

A) Radiation therapy

B) Chemotherapy

C) Surgery

D) Hormone therapy

Question No 23

A client’s oncologist has presented the possibility of implementing biotherapy in the treatment of the client’s brain tumor. Which of the following mechanisms of action provide the therapeutic effects of biotherapy? Select all that apply.

A) Stimulating the immune response to tumor cells

B) Inhibiting tumor protein synthesis

C) Reversing angiogenesis

D) Altering the hormonal environment of tumor cells

E) Causing breaks in the DNA of tumor cells

Question No 24

A 2-year-old child has been diagnosed with neuroblastoma. The tumor is extremely large. Parents ask how this cancer could be so extensive, yet the child has not displayed many symptoms until this past week. Nurses explain that early diagnosis of childhood cancers is often difficult because the signs and symptoms are:

A) Already present at birth

B) Absent until the late stage

C) Similar to those of other childhood diseases

D) Seen as developmental delays

Question No 25

A 5-year-old girl’s diagnosis of bone cancer required an aggressive treatment regimen. The client immediately receives doxorubicin chemotherapy. The nurse administering this medication should perform a detailed assessment of which body system that has been greatly affected by this drug?

A) CNS

B) Renal

C) Cardiac

D) Respiratory

Postherpetic neuralgia (PHN) Jaipur Block for Postherpetic neuralgia (PHN)

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Varicella zoster

Definition of Postherpetic neuralgia (PHN)

Postherpetic neuralgia (PHN) is a localized dermatomal neuropathic pain experienced 1 month after herpes zoster.

Immunosuppression is the commonest risk factor for PHN.

Varicella-zoster virus (VZV) is the causative agent of varicella, or ” the chickenpox,” and herpes zoster, or “shingles.”

Acute herpes zoster typically presents with a rash that is painful but self-limited. Some patients may continue to experience pain for months to years after the resolution of the rash, a condition known as postherpetic neuralgia (PHN).

Risk factors for post herpetic neuralgia

1. age more than 60 years
2. severe pain during acute herpes zoster
3. severe or more rash with acute herpes zoster

How long does the pain of PHN lasts?

Generally pain of PHN lasts from few months to several. Most of them last for few months.

Is there sensory loss  with PHN?

Yes, the same dermatomes involved with herpes and PHN may also have sensory loss like loss of thermal, tactile, inprick or vibration sensations.

Occasionally the sensory deficit may cross dermatome margins but the uninvolved contralateral dermatomes are normal or unimpaired.

herpes zoster

Does PHN cause allodynia?

Allodynia is a condition that causes pain from the stimuli that normally wouldnt cause pain suchas light touch, brushing, combing hair, wearing clothing etc.

And PHN may occasionally cause allodynia as well.

Pain in Postherpetic neuralgia (PHN)

Broadly type of pain in PHN is divided into two broad categories spontaneous and stimulus evoked.

Spontaneous pain can be either continuous (burning, aching, throbbing) or intermittent (stabbing, shooting, electric-shock-like pain). Stimulus-evoked pain can present as allodynia and hyperalgesia. Allodynia is the commonest type of pain reported in PHN.

Diagnosis of PHN

The diagnosis of PHN is made when localized neuropathic pain persists beyond three months in the same distribution as a preceding documented episode of acute herpes zoster.

Testing for varicella-zoster virus (VZV) antibodies in the blood or cerebrospinal fluid is available and may be useful in atypical cases to confirm past exposure to the virus; however, positive tests do not specify PHN as the source of pain

Differential diagnosis of PHN

1. Trigeminal neuropathy
2. Other forms of craniofacial pain
3. Acute radiculopathy
4. Diabetic amyotrophy and idiopathic lumbosacral radiculoplexus neuropathy
5. Recurrent acute herpes zoster

Treatment of  Postherpetic neuralgia (PHN) with local anesthetics

Local anesthetics act by suppressing sodium channels and decreasing ectopic discharges, thus reducing membrane excitability.

Lignocaine has faster onset of action (2-3 min) of but the duration of action (2 h) in contrast bupivacaine though is slow to act but has a continued activity for longer time (4-8 h).

There is no consensus on the concentration of anesthetics required, though few studies have reported a dose-related effect.

Treatment of Postherpetic neuralgia (PHN)

Intradermal therapy leads to faster onset of action, and the reservoir effect leads to sustained action with less systemic absorption. A higher dose of local anesthetics may cause arrythmias

Steroids and Anesthetics for Postherpetic neuralgia (PHN)

A combination of dexamethasone and local anesthetics gives a good response in stimulus-induced postherpetic neuralgia

Treatment options for PHN

Following medications can be used for treatment of PHN:

1. Gabapentinoids like gabapentin or pregabalin
2. Tricyclic antidepressants TCAs like Amitriptyline, Nortriptyline, Desipramine
3. Capsaicin topical
4. Lidocaine patches
5. Antiseizure medications like valproic acid, carbamazepine, oxcarbazepine. lamotrigine
6. SNRI like duloxetine, venlafaxine
7. Botulinum toxin
8. Opioids
9. Glucocorticoid injections
10. Neuromodulation and nerve stimulation like TENS, Pulse radiofrequency, spinal cord stimulation
11. Cognitive behavior therapy

Jaipur block for Postherpetic neuralgia (PHN)

Jaipur Block is a cocktail injection of ( Dexamethasone+ Lignocaine + Bupivacaine ) given to a patient of PHN.

Jaipur block for Postherpetic neuralgia (PHN)

Prevention of PHN

Prevention of PHN involves either treatment of acute zoster or the use of a vaccine to decrease the incidence of acute zoster and PHN.

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