Richard ZuWallack

Dr. Richard ZuWallack

Pulmonary and Critical Care, St Francis Hospital and Medical Center, Hartford, CT 06105, USA
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Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 December 2022 in Respiratory Medicine
Verified
Journal Article
Closed access
AAAlvar Agustí
Alvar Agustí
NANicolino Ambrosino
Nicolino Ambrosino
FBFelicity Blackstock
Felicity Blackstock
JBJean Bourbeau
Jean Bourbeau
RCRichard Casaburi
Richard Casaburi
RZRichard ZuWallack
Richard ZuWallack

27 January 2025 in Journal of Multimorbidity and Comorbidity
Verified
Journal Article
Open access
KLKevin Ly
Kevin Ly
DWDorothy Wakefield
Dorothy Wakefield
RZRichard ZuWallack
Richard ZuWallack
Background: Since comorbid conditions are frequently present in chronic obstructive pulmonary disease (COPD) and affect outcome, a composite scoring system to quantify comorbidity might be helpful in assessing mortality risk. Methods: We tested the hypothesis that the Charlson Comorbidity Index (CCI) score at the time of an outpatient medical clinic encounter for COPD predicts all-cause mortality. Cox Proportional Hazards analyses were used in 200 randomly selected patients to relate CCI scores to all-cause mortality out to 5 years. Results: Mean age was 62 ± 10 years, 56% were female, FEV1 was 62%, CCI was 3.08 ± 2.30, and 30% had a CCI ≥ 4, indicating 3 or more comorbid conditions. All-cause mortality was 8.5% and 20% at 3 and 5 years, respectively. In univariate testing, the CCI score and hospitalizations predicted mortality, but FEV1 did not. In multivariable testing, which included covariates of age, sex, socioeconomic status, race, FEV1 percent-predicted, and all-cause hospitalizations in the preceding year, CCI expressed as a continuous variable strongly predicted mortality: hazard ratio (HR) 1.38 for each unit increase in the score (p < 0.0001). While 1 or 2 comorbid conditions were not significantly related to mortality, 3 or more comorbid conditions (compared to none) strongly predicted mortality: HR 9.80, 95% CI 3.80 to 25.00. Conclusion: Comorbidity, assessed with the CCI, is strongly predictive of mortality in outpatients with a clinical diagnosis of COPD, and this relationship appears to be non-linear. This instrument may be useful in determining prognosis in this population.

7 May 2025 in Life
Verified
Journal Article
Open access
PDF file
SLSuzanne C Lareau
Suzanne C Lareau
RZRichard ZuWallack
Richard ZuWallack
LNLinda Nici
Linda Nici
Goals of medical management of individuals with chronic obstructive pulmonary disease (COPD) should be to live better and live longer—in other words, improve health-related quality of life (HRQL) and survival. This narrative review summarizes the literature in these areas, with an emphasis on pulmonary rehabilitation (PR). Treatments that increase HRQL include pharmacologic agents, exercise training, physical activity promotion, lung volume reduction, PR, self-management training, and supplemental oxygen. Additionally, anything that reduces the frequency or impact of exacerbations substantially increases HRQL. With respect to survival in COPD, the list of beneficial interventions for this outcome is considerably more limited. Supplemental oxygen therapy for hypoxemic patients, smoking cessation interventions, influenza vaccination, and lung volume reduction procedures have the strongest evidence in survival benefit. PR, especially when provided following discharge for exacerbations, may improve survival. A nihilistic view of COPD treatment is unwarranted, as multiple interventions are available that improve HRQL, and likely increase survival for selected patients.

14 January 2022 in COVID
Verified
Journal Article
Open access
PDF file
AKAntarpreet Kaur
Antarpreet Kaur
CMChloe Michalopoulos
Chloe Michalopoulos
SCSuzanne Carpe
Suzanne Carpe
SCSoontharee Congrete
Soontharee Congrete
HSHira Shahzad
Hira Shahzad
RZRichard ZuWallack
Richard ZuWallack
Background: Observational studies of the long-term effects of COVID-19 infection generally focus on individual symptoms rather than health status. Objective: Longitudinal assessment of general health status following COVID-19 infection. Design: Observational study, with data collected from two telephone surveys at 32 ± 10 and 89 ± 25 days after discharge from the hospital or emergency department (ED) for a COVID-19 infection. Medicaid or no insurance was our marker of low socioeconomic status (SES). Acute disease severity was determined by summing 10 severity markers (yes-no) from the health encounter. Baseline comorbidity was a modified Charlson Index. Participants: 40 patients. Mean age was 54 ± 15 years, 50% were female, and 40% had low socioeconomic status. Main Measures: (1) the 20-item Medical Outcomes Study Short-Form General Health Survey (SF-20); (2) Dyspnea (modified Medical Research Council); (3) Psychological symptoms (Patient Health Questionnaire for Anxiety and Depression); (4) Cognitive function (Cognitive Change Questionnaire); (5) Fatigue (Short Fatigue Questionnaire); (6) A 10-item review of systems (ROS) questionnaire. Key Results: Percentages with abnormal symptoms at the first and second surveys were (respectively): Dyspnea (40, 33), Fatigue (53, 50), Anxiety (33, 18), Depression (20, 10), PHQ-4 Composite (25, 13), and Cognitive (18, 10). Mean scores on the SF-20 subscales, Physical Functioning, Role Functioning, Social Functioning, Health Perception, Mental Health, and Pain were numerically lower than means from a published study of elderly outpatients. With the exception of Pain, all SF-20 subscale scores improved significantly by the second survey. In multivariable analyses, dyspnea was predictive of impairment in all SF-20 subscales at the second survey. Conclusions: COVID-19 infection causes persistent abnormality across multiple patient-reported outcome areas, including health status. The persistence of impairment in each health status component is influenced by baseline dyspnea.

1 January 2022 in Monaldi Archives for Chest Disease
Verified
Journal Article
Open access
PDF file
LPLawrence Paelet
Lawrence Paelet
JRJonathan Raskin
Jonathan Raskin
RZRichard ZuWallack
Richard ZuWallack
Telemedicine refers to the use of communications technologies to provide or enhance medical care through mitigating the negative effects of patient-caregiver distance on medical evalua- tion and treatment. The general concept, telemedicine, can refer to a number of interventions, such as telemonitoring, tele-consultations, tele-education, tele-communication, and tele-rehabilitation. While telemedicine has seen steady growth, its trajectory has increased during the COVID-19 pandemic. As a tool in health care delivery, telemedicine is often met with patient satisfaction often resulting from ease of use and accessibility. Additionally, outcomes may improve, although the medical literature is not consistent in this regard. However, enthusiasm over its beneficial effects should be tempered by negative aspects, including the decrease in direct patient-clinician interaction (such as loss of information from the physical examination) and potentially serious privacy risks. Finding a happy medium between positive and negative features of telemedicine remains a work in progress.

13 September 2021 in Respiratory Medicine
Verified
Journal Article
Closed access
PDF file
RCRichard Casaburi
Richard Casaburi
APAntonio Patessio
Antonio Patessio
BCBartolome Celli
Bartolome Celli
NANicolino Ambrosino
Nicolino Ambrosino
RZRichard ZuWallack
Richard ZuWallack