NR 536 Week 5 Develop an Evolving Case Study

Student Name

Chamberlain University

NR-536: Advanced Health Assessment, Pathophysiology & Pharmacology for Advanced Nursing Practice

Prof. Name

Date

NR 536 Week 5: Develop an Evolving Case Study

Overview of the Evolving Case Study

The purpose of this evolving case study is to create a structured and evidence-based treatment plan aimed at preventing and managing ventilator-associated pneumonia (VAP) in the intensive care unit (ICU) environment. VAP continues to be one of the most challenging complications for patients requiring mechanical ventilation, leading to prolonged hospital stays, increased morbidity and mortality, and higher healthcare costs.

This study targets experienced critical care nurses with at least three years of ICU experience. Their clinical expertise, advanced assessment skills, and critical decision-making are fundamental to achieving positive outcomes in mechanically ventilated patients.

Key focus areas include patient safety, infection control, and implementation of evidence-based interventions. Preventive measures include regular oral hygiene using antiseptic solutions (Hua et al., 2016), effective antibiotic stewardship to minimize resistance (Khan et al., 2017), careful sedation management, and continuous patient monitoring (Álvarez-Lerma et al., 2018). Additionally, chest physiotherapy techniques (Zampieri et al., 2015), optimal device handling, and head elevation strategies are emphasized to enhance recovery and minimize infection risks.

Case Study Setting

This clinical scenario unfolds in a tertiary-level ICU within an acute care hospital. The environment is highly controlled and technologically equipped to provide comprehensive support to critically ill patients.

The patient, who has respiratory failure, is intubated and connected to mechanical ventilation for oxygen support. The patient is receiving continuous sedation, intravenous fluids, and anticoagulants. Monitoring includes hemodynamic parameters, pulmonary and cardiac function, and secretion management through wall suction.

Given this high-acuity setting, vigilant nursing interventions are crucial to preventing complications such as VAP. Nurses must adhere to infection prevention protocols, promptly identify early signs of deterioration, and apply critical thinking in treatment adjustments.

Patient Profile

Patient Information	Details
Name	Mr. XYZ
Gender/Age/Weight/Height	Male, 65 years old, 252 lbs, 5’10”
Allergies	Codeine
Past Medical History	Diabetes mellitus, asthma, ischemic stroke (Dec 2019), paroxysmal atrial fibrillation, coronary artery bypass graft (2016), 40-pack-year smoking history, chronic alcohol use
Present Illness	Admitted on February 8, 2020, with complaints of tachypnea, dyspnea, and chest pain. Developed acute respiratory distress requiring intubation in the emergency department
Social History	Retired software engineer, resides with spouse, two adult children living out of state
Primary Medical Diagnosis	Pulmonary embolism with pleural effusion, leading to acute respiratory failure and hypoxemia
Surgeries and Procedures	CT scan, chest X-ray, COVID-19 test, blood and urine cultures, arterial blood gas (ABG) analysis, serial EKGs, routine laboratory work

This profile demonstrates a high-risk patient with multiple comorbidities, making preventive VAP strategies even more essential.

Evolving Case Study Information and Learning Objectives

The evolving case study unfolds across three stages, allowing learners to apply clinical reasoning and integrate evidence-based practice into patient care.

Evolving Case Stage	Case Study Information	Learner Actions	Socratic Questions
Stage One	The patient shows a decline in oxygen saturation and requires increased FiO2 and PEEP adjustments. Tachycardia is also observed (Hellyer et al., 2016).	– Review patient’s medical history- Notify physician- Assess clinical status- Implement respiratory support measures	– What factors might cause oxygen desaturation?- Should diagnostic tests such as cultures or imaging be initiated?- Is early administration of broad-spectrum antibiotics justified?
Stage Two	The patient develops thick, purulent secretions, worsening hypoxemia, and requires frequent suctioning. VAP prevention protocols are initiated.	– Activate VAP prevention bundle- Perform oral care- Elevate head of bed (30–45°)- Regulate sedation levels- Check endotracheal tube cuff pressure	– How does oral care reduce bacterial colonization?- Is head elevation beneficial for secretion clearance?- Could alternatives to chlorhexidine be more effective?
Stage Three	Tracheal aspirate cultures and imaging confirm VAP. Infection continues to progress.	– Adjust antibiotic therapy based on culture results- Reassess patient every 24–48 hours- Start spontaneous breathing trials- Introduce probiotics- Maintain close monitoring	– Does sedation control help lower VAP incidence?- Is narrowing antibiotic coverage after cultures the best approach?- What is the role of probiotics in reducing infection recurrence?

Debriefing

Stage 1 Focus

Question: What preventive measures are most effective in reducing VAP among patients with chronic illnesses?

Answer: The most effective preventive actions include head-of-bed elevation (30–45°), sedation minimization, and early patient mobilization. Consistent oral hygiene and avoiding unnecessary invasive procedures are also vital to reducing infection risk (Fortaleza et al., 2020). Additionally, closed suction systems and daily sedation interruptions promote better airway clearance and lung function.

Stage 2 Focus

Question: Should VAP bundle components, such as head elevation and oral care, be performed more than once daily?

Answer: Absolutely. Research supports frequent oral care (2–4 times daily) with antiseptic agents to significantly reduce bacterial growth (Prasad et al., 2019). Similarly, maintaining consistent head elevation prevents secretion accumulation and aspiration. Reinforcing staff adherence to these practices ensures continuous infection control.

Stage 3 Focus

Question: How can bacterial growth in the lungs and trachea be controlled promptly?

Answer: Effective bacterial control relies on timely initiation of targeted antibiotics guided by culture sensitivity. Non-pharmacological interventions—such as respiratory physiotherapy, lung recruitment maneuvers, and spontaneous breathing trials—help restore normal ventilation. Probiotic supplementation can also stabilize gut flora, reducing translocation of pathogens to the respiratory tract (Zhao et al., 2020).

Overall Case Study Focus

Question: What comprehensive methods ensure VAP prevention and management in immobilized, mechanically ventilated patients?

Answer: A multidisciplinary and evidence-based approach offers the best protection against VAP. Core components include:

Strict adherence to VAP prevention bundles
Regular oral hygiene using antiseptics such as chlorhexidine or safe alternatives
Appropriate sedation and early weaning protocols
Implementation of spontaneous awakening and breathing trials
Antibiotic stewardship to minimize resistance development
Active physiotherapy to promote airway clearance and lung expansion

Collaborative teamwork between nurses, respiratory therapists, and physicians ensures patient safety, reduces infection rates, and accelerates recovery.

References

Álvarez-Lerma, F., Palomar-Martínez, M., Sánchez-García, M., Martínez-Alonso, M., Álvarez-Rodríguez, J., & Lorente, L. et al. (2018). Prevention of ventilator-associated pneumonia. Critical Care Medicine, 46(2), 181–188. https://doi.org/10.1097/ccm.0000000000002736

Bardia, A., Blitz, D., Dai, F., Hersey, D., Jinadasa, S., Tickoo, M., & Schonberger, R. (2019). Preoperative chlorhexidine mouthwash to reduce pneumonia after cardiac surgery: A systematic review and meta-analysis. The Journal of Thoracic and Cardiovascular Surgery, 158(4), 1094–1100. https://doi.org/10.1016/j.jtcvs.2019.01.014

Fortaleza, C., Filho, S., Silva, M., Queiroz, S., & Cavalcante, R. (2020). Sustained reduction of healthcare-associated infections after introducing a bundle for prevention of ventilator-associated pneumonia in medical-surgical ICUs. The Brazilian Journal of Infectious Diseases, 24(5), 373–379. https://doi.org/10.1016/j.bjid.2020.08.004

Hellyer, T., Ewan, V., Wilson, P., & Simpson, A. (2016). The intensive care society recommended bundle of interventions for preventing ventilator-associated pneumonia. Journal of the Intensive Care Society, 17(3), 238–243. https://doi.org/10.1177/1751143716644461

Hua, F., Xie, H., Worthington, H., Furness, S., Zhang, Q., & Li, C. (2016). Oral hygiene care for critically ill patients to prevent ventilator-associated pneumonia. Cochrane Database of Systematic Reviews. https://doi.org/10.1002/14651858.cd008367.pub3

Khan, Z., Ceriana, P., & Donner, C. (2017). Ventilator-associated pneumonia or ventilator-induced pneumonia. Multidisciplinary Respiratory Medicine, 12, 224. https://doi.org/10.4081/mrm.2017.224

Olanipekun, T., & Snyder, R. (2019). Mortality risk in ventilator-acquired bacterial pneumonia and nonventilator ICU-acquired bacterial pneumonia. Critical Care Medicine, 47(10), e851–e852. https://doi.org/10.1097/ccm.0000000000003662

Pinho, R., Tanure, L., Pessoa, J., Santos, L., Couto, B., & Starling, C. (2020). Impact of ventilator bundle components on preventing ventilator-associated pneumonia. Infection Control & Hospital Epidemiology, 41(S1), S259–S260. https://doi.org/10.1017/ice.2020.824

Prasad, R., Daly, B., & Manley, G. (2019). The impact of 0.2% chlorhexidine gel on oral health and pneumonia incidence among adults with neurodisability. Special Care in Dentistry, 39(5), 524–532. https://doi.org/10.1111/scd.12414

Vieira, P., de Oliveira, R., & da Silva Mendonça, T. (2020). Should oral chlorhexidine remain in ventilator-associated pneumonia prevention bundles? Medicina Intensiva. https://doi.org/10.1016/j.medin.2020.09.009

Xie, X., Lyu, J., Hussain, F., & Li, M. (2019). Drug prevention and control of ventilator-associated pneumonia. Frontiers in Pharmacology, 10, 298. https://doi.org/10.3389/fphar.2019.00298

Zampieri, F., Nassar Jr, A., Gusmao-Flores, D., Taniguchi, L., Torres, A., & Ranzani, O. (2015). Nebulized antibiotics for ventilator-associated pneumonia: A systematic review and meta-analysis. Critical Care, 19(1), 150. https://doi.org/10.1186/s13054-015-0868-y

Zhao, J., Li, L., Chen, C., Zhang, G., Cui, W., & Tian, B. (2020). Do probiotics help prevent ventilator-associated pneumonia in critically ill patients? A systematic review with meta-analysis. ERJ Open Research. https://doi.org/10.1183/23120541.00302-2020